Journal of Environmental Sciences-china最新文献_第7页

Geochemical behavior of thallium shifts across seasons in a granite weathering river 花岗岩风化河中铊的季节变化地球化学行为

IF 6.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-07-04 DOI: 10.1016/j.jes.2025.07.008

Shuxin Pan , Shuaibei Li , Qiugui Wang , Jilong Ma , Lei Yan , Enzong Xiao , Yuxiao Chen , Yong Tao , Tangfu Xiao

Thallium (Tl), a highly toxic trace metal, poses severe risks to water ecosystems and human health, particularly in granite weathering regions with elevated Tl geological backgrounds. This study investigates the migration, enrichment characteristics, and ecological risks of Tl. The results demonstrate that the river’s Ca-HCO₃ hydrogeochemical type reflects the silicate weathering dominance. Tl is the primary element found to exceed standards in the local water source. Its presence is primarily attributed to natural weathering processes in the region and exhibits significant seasonal variations. During the wet season, Tl is predominantly governed by the decomposition of Tl-rich clay minerals influenced by surface runoff. During the dry season, Tl primarily originates from the weathering of Tl-rich minerals (such as potassium feldspar and mica) and the ion exchange processes of clay minerals facilitated by water-rock interactions. Tl plays a predominant role in the ecological risk assessment of surface water. During the wet season, moderate risks are observed in both the upstream and downstream sections of Huashan River. Consequently, it is imperative for stakeholders and decision-makers to implement sustainable agricultural practices, restore degraded hilly vegetation, mitigate soil erosion, periodically dredge riverbed sediments, and enhance water quality monitoring efforts. These measures will help alleviate the current situation and safeguard the drinking water safety of local residents.

铊是一种剧毒的微量金属，对水生态系统和人类健康构成严重威胁，特别是在铊地质背景较高的花岗岩风化区。研究结果表明，河流的Ca-HCO3水文地球化学类型反映了硅酸盐风化优势。l是当地水源中超标的首要元素。它的存在主要归因于该地区的自然风化过程，并表现出明显的季节变化。在雨季，土壤中含钾量主要受地表径流影响下富含钾粘土矿物的分解控制。在旱季，Tl主要来源于富Tl矿物（如钾长石和云母）的风化作用和粘土矿物在水岩相互作用下的离子交换过程。Tl在地表水生态风险评价中起主导作用。在丰水期，花山河上下游均存在中等风险。因此，利益相关者和决策者必须实施可持续的农业实践，恢复退化的丘陵植被，减轻土壤侵蚀，定期疏浚河床沉积物，加强水质监测工作。这些措施将有助于缓解现状，保障当地居民的饮用水安全。

{"title":"Geochemical behavior of thallium shifts across seasons in a granite weathering river","authors":"Shuxin Pan , Shuaibei Li , Qiugui Wang , Jilong Ma , Lei Yan , Enzong Xiao , Yuxiao Chen , Yong Tao , Tangfu Xiao","doi":"10.1016/j.jes.2025.07.008","DOIUrl":"10.1016/j.jes.2025.07.008","url":null,"abstract":"<div><div>Thallium (Tl), a highly toxic trace metal, poses severe risks to water ecosystems and human health, particularly in granite weathering regions with elevated Tl geological backgrounds. This study investigates the migration, enrichment characteristics, and ecological risks of Tl. The results demonstrate that the river’s Ca-HCO<sub>3</sub> hydrogeochemical type reflects the silicate weathering dominance. Tl is the primary element found to exceed standards in the local water source. Its presence is primarily attributed to natural weathering processes in the region and exhibits significant seasonal variations. During the wet season, Tl is predominantly governed by the decomposition of Tl-rich clay minerals influenced by surface runoff. During the dry season, Tl primarily originates from the weathering of Tl-rich minerals (such as potassium feldspar and mica) and the ion exchange processes of clay minerals facilitated by water-rock interactions. Tl plays a predominant role in the ecological risk assessment of surface water. During the wet season, moderate risks are observed in both the upstream and downstream sections of Huashan River. Consequently, it is imperative for stakeholders and decision-makers to implement sustainable agricultural practices, restore degraded hilly vegetation, mitigate soil erosion, periodically dredge riverbed sediments, and enhance water quality monitoring efforts. These measures will help alleviate the current situation and safeguard the drinking water safety of local residents.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"162 ","pages":"Pages 34-41"},"PeriodicalIF":6.3,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145921880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantifying carbon reduction potential of “Zero-Waste City” pilot: A case study of Shenzhen based on Source reduction-Recycling-Disposal framework “零废物城市”试点的减碳潜力量化研究——以深圳为例——基于源头减量-回收-处置框架

IF 6.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-07-03 DOI: 10.1016/j.jes.2025.07.005

Nini Zhang , Wei Liu , Jinhui Li , Lili Liu , Quanyin Tan

The “Zero-Waste City” (ZWC) pilot and the carbon peak plan are essential environmental strategies in China. Solid waste management is a critical but often overlooked driver of greenhouse gas emissions, making ZWC pilot increasingly significant. However, quantifying their carbon reduction impact remains understudied. This study proposes a carbon emission accounting method for solid waste management based on the Source reduction-Recycling-Disposal (SRD) framework, comprehensively considering source reduction, resource utilization, and disposal. Shenzhen, one of the first pilot ZWC in China, was selected as the case study. The results show that Through its active participation in the ZWC pilot, Shenzhen has accomplished substantial carbon reductions, with total emissions declining from -96.51 Mt of CO₂eq in 2018 to -195.13 Mt of CO₂eq by 2020, with per-ton-waste emissions decreasing from -0.06 to -0.12 t CO₂eq, reflecting an impressive 102 % reduction. Scenario analysis projects this number will further decrease to -554.7 Mt CO₂eq (-5.0 t CO₂eq/twaste) by 2035, resulting in a total reduction of 183 %. Waste nonferrous metals show the highest carbon reduction potential (46.08 %, -25.5 Mt CO₂eq), followed by waste paper (14.13 %, -6.5 Mt CO₂eq), with recyclable resources and municipal solid waste contributing 52.84 % and 26.70 % respectively. The study also finds that source reduction (contributing 62.31 %) and recycling (contributing 40.90 %) are the most effective carbon reduction strategies. These findings provide valuable management decision-making support and a methodological framework for further advancing China’s “Zero-Waste City” pilot.

“零废物城市”（ZWC）试点和碳峰值计划是中国必不可少的环境战略。固体废物管理是温室气体排放的一个关键因素，但往往被忽视，这使得ZWC试点项目变得越来越重要。然而，量化它们的碳减排影响仍未得到充分研究。本研究提出了一种基于源减量-回收-处置（SRD）框架的固体废物管理碳排放核算方法，综合考虑源减量、资源利用和处置。深圳作为中国首批试点城市之一，被选为案例研究对象。结果表明，通过积极参与ZWC试点，深圳实现了大量的碳减排，总排放量从2018年的- 9651万吨二氧化碳当量下降到2020年的-195.13万吨二氧化碳当量，每吨废物排放量从-0.06吨二氧化碳当量下降到-0.12吨二氧化碳当量，减少了102%。情景分析预测，到2035年，这一数字将进一步减少到-554.7 Mt CO₂当量（-5.0 t CO₂当量/废物），从而使总排放量减少183%。废有色金属的碳减排潜力最大（46.08%,- 2550 Mt CO₂eq），其次是废纸（14.13%,- 650 Mt CO₂eq），其中可回收资源和城市生活垃圾的碳减排潜力分别为52.84%和26.70%。研究还发现，源减排（贡献62.31%）和循环利用（贡献40.90%）是最有效的碳减排策略。这些发现为进一步推进中国“零废物城市”试点提供了宝贵的管理决策支持和方法框架。

{"title":"Quantifying carbon reduction potential of “Zero-Waste City” pilot: A case study of Shenzhen based on Source reduction-Recycling-Disposal framework","authors":"Nini Zhang , Wei Liu , Jinhui Li , Lili Liu , Quanyin Tan","doi":"10.1016/j.jes.2025.07.005","DOIUrl":"10.1016/j.jes.2025.07.005","url":null,"abstract":"<div><div>The “Zero-Waste City” (ZWC) pilot and the carbon peak plan are essential environmental strategies in China. Solid waste management is a critical but often overlooked driver of greenhouse gas emissions, making ZWC pilot increasingly significant. However, quantifying their carbon reduction impact remains understudied. This study proposes a carbon emission accounting method for solid waste management based on the Source reduction-Recycling-Disposal (SRD) framework, comprehensively considering source reduction, resource utilization, and disposal. Shenzhen, one of the first pilot ZWC in China, was selected as the case study. The results show that Through its active participation in the ZWC pilot, Shenzhen has accomplished substantial carbon reductions, with total emissions declining from -96.51 Mt of CO₂eq in 2018 to -195.13 Mt of CO₂eq by 2020, with per-ton-waste emissions decreasing from -0.06 to -0.12 t CO₂eq, reflecting an impressive 102 % reduction. Scenario analysis projects this number will further decrease to -554.7 Mt CO₂eq (-5.0 t CO₂eq/twaste) by 2035, resulting in a total reduction of 183 %. Waste nonferrous metals show the highest carbon reduction potential (46.08 %, -25.5 Mt CO₂eq), followed by waste paper (14.13 %, -6.5 Mt CO₂eq), with recyclable resources and municipal solid waste contributing 52.84 % and 26.70 % respectively. The study also finds that source reduction (contributing 62.31 %) and recycling (contributing 40.90 %) are the most effective carbon reduction strategies. These findings provide valuable management decision-making support and a methodological framework for further advancing China’s “Zero-Waste City” pilot.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"161 ","pages":"Pages 411-420"},"PeriodicalIF":6.3,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145690997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic effect between Pt and Ir in PtIr/TiO2 bimetallic catalysts boosting methane combustion activity PtIr/TiO2双金属催化剂中Pt和Ir的协同效应提高了甲烷燃烧活性

IF 6.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-07-01 DOI: 10.1016/j.jes.2025.06.063

Rongrong Hong , Yunshuo Wu , Yuetan Su , Chu Qin , Haiqiang Wang , Xuanhao Wu , Zhongbiao Wu , Xiaole Weng

Highly efficient catalysts for methane combustion have long been pursued due to the intrinsic inertness of CH₄. In this work, bimetallic PtIr/TiO₂ catalysts with varying Pt:Ir ratios were synthesized to modulate the electronic structures of the metals, thereby achieving bimetallic synergy to enhance CH₄ combustion activity. Among the series of monometallic and bimetallic catalysts, Pt_0.5Ir_0.5/TiO₂ exhibited the highest activity, achieving complete CH₄ conversion (T₁₀₀) at 370 °C after activation during the first reaction cycle. Combined experimental and computational studies elucidated that the incorporation of Ir facilitated electron transfer and the formation of partially oxidized Pt^δ+ (0 < δ < 2) species, which were coordinatively unsaturated and more conducive for CH₄ oxidation. The high affinity of Ir for oxygen enabled the Pt^δ+ species to be stabilized under CH₄ oxidation reaction conditions, instead of being overoxidized into Pt²⁺ species as in the monometallic Pt₁/TiO₂ catalyst. Simultaneously, Ir species in the bimetallic catalyst were oxidized into Ir^δ+ species during the reaction and ultimately formed the Pt^δ+-O-Ir^δ+ interface to further elevate the reaction activity. Moreover, the bimetallic catalysts integrated the merits of Ir for CH₄ adsorption and Pt for intermediates conversion, synergistically boosting the reaction activity. This work provides insight into designing effective CH₄ combustion catalysts through fine-tuning the metal electronic structures.

由于甲烷的固有惰性，人们一直在追求高效的甲烷燃烧催化剂。在这项工作中，合成了具有不同Pt:Ir比的双金属PtIr/TiO2催化剂来调节金属的电子结构，从而实现双金属协同作用以增强CH4燃烧活性。在单金属和双金属催化剂系列中，Pt0.5Ir0.5/TiO2的活性最高，在第一个反应周期激活后，在370℃下实现了完全的CH4转化（T100）。实验和计算相结合的研究表明，Ir的加入促进了电子转移和部分氧化Ptδ+ (0 < δ < 2)物质的形成，Ptδ+ (0 < δ < 2)是协调不饱和的，更有利于CH4氧化。Ir对氧的高亲和力使得Ptδ+在CH4氧化反应条件下稳定，而不是像在单金属Pt1/TiO2催化剂中那样被过度氧化成Pt2+。同时，双金属催化剂中的Ir在反应过程中被氧化为Irδ+，最终形成Ptδ+-O-Irδ+界面，进一步提高了反应活性。此外，双金属催化剂综合了Ir吸附CH4和Pt转化中间体的优点，协同提高了反应活性。这项工作为通过微调金属电子结构来设计有效的CH4燃烧催化剂提供了见解。

{"title":"Synergistic effect between Pt and Ir in PtIr/TiO2 bimetallic catalysts boosting methane combustion activity","authors":"Rongrong Hong , Yunshuo Wu , Yuetan Su , Chu Qin , Haiqiang Wang , Xuanhao Wu , Zhongbiao Wu , Xiaole Weng","doi":"10.1016/j.jes.2025.06.063","DOIUrl":"10.1016/j.jes.2025.06.063","url":null,"abstract":"<div><div>Highly efficient catalysts for methane combustion have long been pursued due to the intrinsic inertness of CH<sub>4</sub>. In this work, bimetallic PtIr/TiO<sub>2</sub> catalysts with varying Pt:Ir ratios were synthesized to modulate the electronic structures of the metals, thereby achieving bimetallic synergy to enhance CH<sub>4</sub> combustion activity. Among the series of monometallic and bimetallic catalysts, Pt<sub>0.5</sub>Ir<sub>0.5</sub>/TiO<sub>2</sub> exhibited the highest activity, achieving complete CH<sub>4</sub> conversion (T<sub>100</sub>) at 370 °C after activation during the first reaction cycle. Combined experimental and computational studies elucidated that the incorporation of Ir facilitated electron transfer and the formation of partially oxidized Pt<sup>δ+</sup> (0 < δ < 2) species, which were coordinatively unsaturated and more conducive for CH<sub>4</sub> oxidation. The high affinity of Ir for oxygen enabled the Pt<sup>δ+</sup> species to be stabilized under CH<sub>4</sub> oxidation reaction conditions, instead of being overoxidized into Pt<sup>2+</sup> species as in the monometallic Pt<sub>1</sub>/TiO<sub>2</sub> catalyst. Simultaneously, Ir species in the bimetallic catalyst were oxidized into Ir<sup>δ+</sup> species during the reaction and ultimately formed the Pt<sup>δ+</sup>-O-Ir<sup>δ+</sup> interface to further elevate the reaction activity. Moreover, the bimetallic catalysts integrated the merits of Ir for CH<sub>4</sub> adsorption and Pt for intermediates conversion, synergistically boosting the reaction activity. This work provides insight into designing effective CH<sub>4</sub> combustion catalysts through fine-tuning the metal electronic structures.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"162 ","pages":"Pages 102-111"},"PeriodicalIF":6.3,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lipid accumulation by triphenylphosphine oxide with simultaneous neural dysregulation and microbiota changes 三苯基氧化膦引起的脂质积累，同时伴有神经失调和微生物群变化

IF 6.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-06-28 DOI: 10.1016/j.jes.2025.06.045

Youjia Liu , Yangyuan Zhou , Pin Gao , Zhenyang Yu , Daqiang Yin

Organophosphorus flame retardants (OPFRs) have various health risks. Their recently reported contribution to obesity prevalence earned even more concerns on their hazards. Presently, the obesogenic effects of triphenylphosphine oxide (TPPO), a prevalent OPFR, were investigated in mice. Despite of non-significant influences at 0.1 and 1 µg/(kg·day), TPPO at 10 and 100 µg/(kg·day) significantly increased the body weight gain by 44.5 % and 35.0 % compared with the control, respectively. TPPO at 0.1 µg/(kg·day) stimulated glucose tolerance, while at 100 µg/(kg·day) it declined glucose tolerance. TPPO increased levels of triglycerides and cholesterol. At the low dose, TPPO stimulated high-density lipoprotein cholesterol (HDL-C) in serum and inhibited low-density lipoprotein cholesterol (LDL-C), while at the high dose it inhibited both HDL-C and LDL-C. TPPO stimulated acyl-CoA oxidase 1, long-chain acyl-CoA synthetase, and adipose triglyceride lipase, while it inhibited glycerol-3-phosphateacyl transferases 1, long-chain fatty acid transport protein 1, and acetyl-CoA carboxylase. Simultaneously, TPPO reduced the expressions of Grm3, Gnal, and Cebpa but activated the expression of Ppara in liver. Especially, TPPO’s effects on Ppara expressions were different in fat and liver tissues. Moreover, TPPO significantly disturbed the levels of neurotransmitters including acetylcholine, dopamine, 5-hydroxytryptamine and γ-aminobutyric acid and also the composition of the microbiota (e.g., ratio of Firmicutes to Bacteroidetes). Summing up, TPPO caused obesogenic effects through multiple aspects including disturbances on enzyme activities, genetic expression, neural regulation and microbiota composition. Further studies are needed to elucidate the interactions among the multiple aspects.

有机磷阻燃剂（OPFRs）具有多种健康风险。最近有报道称，它们对肥胖的影响更引起了人们对其危害的关注。目前，研究了一种常见的OPFR氧化三苯基膦（TPPO）在小鼠中的致肥作用。尽管0.1和1µg/（kg·d）的TPPO影响不显著，但与对照组相比，10和100µg/（kg·d）的TPPO分别显著增加了44.5%和35.0%的体重增加。0.1µg/(kg·d) TPPO刺激葡萄糖耐量，100µg/(kg·d) TPPO降低葡萄糖耐量。TPPO增加了甘油三酯和胆固醇的水平。低剂量时，TPPO刺激血清高密度脂蛋白胆固醇（HDL-C），抑制低密度脂蛋白胆固醇（LDL-C）；高剂量时，TPPO同时抑制HDL-C和LDL-C。TPPO刺激酰基辅酶a氧化酶1、长链酰基辅酶a合成酶和脂肪甘油三酯脂肪酶，抑制甘油-3-磷酸酰基转移酶1、长链脂肪酸转运蛋白1和乙酰辅酶a羧化酶。同时，TPPO降低了肝脏中Grm3、Gnal和Cebpa的表达，激活了Ppara的表达。特别是，TPPO对脂肪和肝组织中Ppara表达的影响是不同的。此外，TPPO显著干扰了神经递质的水平，包括乙酰胆碱、多巴胺、5-羟色胺和γ-氨基丁酸，以及微生物群的组成（如厚壁菌门与拟杆菌门的比例）。综上所述，TPPO通过干扰酶活性、基因表达、神经调节和微生物群组成等多个方面引起致肥作用。需要进一步的研究来阐明多个方面之间的相互作用。

{"title":"Lipid accumulation by triphenylphosphine oxide with simultaneous neural dysregulation and microbiota changes","authors":"Youjia Liu , Yangyuan Zhou , Pin Gao , Zhenyang Yu , Daqiang Yin","doi":"10.1016/j.jes.2025.06.045","DOIUrl":"10.1016/j.jes.2025.06.045","url":null,"abstract":"<div><div>Organophosphorus flame retardants (OPFRs) have various health risks. Their recently reported contribution to obesity prevalence earned even more concerns on their hazards. Presently, the obesogenic effects of triphenylphosphine oxide (TPPO), a prevalent OPFR, were investigated in mice. Despite of non-significant influences at 0.1 and 1 µg/(kg·day), TPPO at 10 and 100 µg/(kg·day) significantly increased the body weight gain by 44.5 % and 35.0 % compared with the control, respectively. TPPO at 0.1 µg/(kg·day) stimulated glucose tolerance, while at 100 µg/(kg·day) it declined glucose tolerance. TPPO increased levels of triglycerides and cholesterol. At the low dose, TPPO stimulated high-density lipoprotein cholesterol (HDL-C) in serum and inhibited low-density lipoprotein cholesterol (LDL-C), while at the high dose it inhibited both HDL-C and LDL-C. TPPO stimulated acyl-CoA oxidase 1, long-chain acyl-CoA synthetase, and adipose triglyceride lipase, while it inhibited glycerol-3-phosphateacyl transferases 1, long-chain fatty acid transport protein 1, and acetyl-CoA carboxylase. Simultaneously, TPPO reduced the expressions of <em>Grm3, Gnal</em>, and <em>Cebpa</em> but activated the expression of <em>Ppara</em> in liver. Especially, TPPO’s effects on <em>Ppara</em> expressions were different in fat and liver tissues. Moreover, TPPO significantly disturbed the levels of neurotransmitters including acetylcholine, dopamine, 5-hydroxytryptamine and γ-aminobutyric acid and also the composition of the microbiota (e.g., ratio of Firmicutes to Bacteroidetes). Summing up, TPPO caused obesogenic effects through multiple aspects including disturbances on enzyme activities, genetic expression, neural regulation and microbiota composition. Further studies are needed to elucidate the interactions among the multiple aspects.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"162 ","pages":"Pages 131-139"},"PeriodicalIF":6.3,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Association between heavy-duty vehicle pollution exposure and cardiovascular disease: A cohort study of middle-aged and elderly adults 重型车辆污染暴露与心血管疾病之间的关系：一项中老年人队列研究

IF 6.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-06-27 DOI: 10.1016/j.jes.2025.06.057

Xin Ma , Juan Hao , Jinghua Wang , Yan Li , Xianjia Ning , Hongjun Mao , Ting Wang

Vehicle emission exposure has a negative impact on human health, among which, heavy-duty vehicle emission has potentially serious health risk due to the high levels of air pollutant emissions. To systematically understand the effects of heavy-duty vehicle pollution on cardiovascular disease, researchers conducted a cohort study of 3567 middle-aged and older adults. The road proximity of the home address was used as an indicator of traffic exposure intensity. The incidence of blood lipids, hypertension, diabetes, coronary heart disease (CHD), carotid plaque and carotid intima-media thickness (cIMT) thickened were collected, and the correlation was estimated by Logistic regression model. It showed a significant positive correlation between heavy-duty vehicle pollution exposure and dyslipidemia and CHD. The results of stratified analysis showed that people with a history of certain diseases were more sensitive to heavy-duty vehicle pollution exposure, and there was a positive correlation between heavy-duty vehicle pollution exposure and the occurrence of carotid plaque within 200 m residential area, while there was a significant positive correlation between heavy-duty vehicle pollution exposure and cIMT thickened within 300 m residential area. Furthermore, quitting smoking and moderate alcohol consumption was beneficial for alleviating lipid abnormalities and cardiovascular disease risks caused by heavy-duty vehicle exposure. These findings suggest that heavy-duty vehicle pollution exposure is a risk factor for enhanced susceptibility to carotid plaque via dyslipidemia in middle-aged and elderly people, while making lifestyle changes may be an important response to prevent cardiovascular disease, taking into account susceptibility to different disease histories.

汽车排放暴露对人体健康有负面影响，其中重型汽车排放的空气污染物含量高，具有潜在的严重健康风险。为了系统地了解重型车辆污染对心血管疾病的影响，研究人员对3567名中老年成年人进行了一项队列研究。家庭住址附近的道路被用作交通暴露强度的指标。收集血脂、高血压、糖尿病、冠心病（CHD）、颈动脉斑块、颈动脉内膜-中膜厚度（cIMT）增厚的发生率，采用Logistic回归模型进行相关性估计。重型车辆污染暴露与血脂异常和冠心病呈显著正相关。分层分析结果显示，有一定疾病史的人群对重型汽车污染暴露更为敏感，200 m居住区域内重型汽车污染暴露与颈动脉斑块的发生呈正相关，300 m居住区域内重型汽车污染暴露与颈动脉斑块增厚呈正相关。此外，戒烟和适度饮酒有助于减轻重型车辆暴露引起的脂质异常和心血管疾病风险。这些发现表明，重型车辆污染暴露是中老年人通过血脂异常而增加颈动脉斑块易感性的危险因素，而考虑到不同病史的易感性，改变生活方式可能是预防心血管疾病的重要反应。

{"title":"Association between heavy-duty vehicle pollution exposure and cardiovascular disease: A cohort study of middle-aged and elderly adults","authors":"Xin Ma , Juan Hao , Jinghua Wang , Yan Li , Xianjia Ning , Hongjun Mao , Ting Wang","doi":"10.1016/j.jes.2025.06.057","DOIUrl":"10.1016/j.jes.2025.06.057","url":null,"abstract":"<div><div>Vehicle emission exposure has a negative impact on human health, among which, heavy-duty vehicle emission has potentially serious health risk due to the high levels of air pollutant emissions. To systematically understand the effects of heavy-duty vehicle pollution on cardiovascular disease, researchers conducted a cohort study of 3567 middle-aged and older adults. The road proximity of the home address was used as an indicator of traffic exposure intensity. The incidence of blood lipids, hypertension, diabetes, coronary heart disease (CHD), carotid plaque and carotid intima-media thickness (cIMT) thickened were collected, and the correlation was estimated by Logistic regression model. It showed a significant positive correlation between heavy-duty vehicle pollution exposure and dyslipidemia and CHD. The results of stratified analysis showed that people with a history of certain diseases were more sensitive to heavy-duty vehicle pollution exposure, and there was a positive correlation between heavy-duty vehicle pollution exposure and the occurrence of carotid plaque within 200 m residential area, while there was a significant positive correlation between heavy-duty vehicle pollution exposure and cIMT thickened within 300 m residential area. Furthermore, quitting smoking and moderate alcohol consumption was beneficial for alleviating lipid abnormalities and cardiovascular disease risks caused by heavy-duty vehicle exposure. These findings suggest that heavy-duty vehicle pollution exposure is a risk factor for enhanced susceptibility to carotid plaque via dyslipidemia in middle-aged and elderly people, while making lifestyle changes may be an important response to prevent cardiovascular disease, taking into account susceptibility to different disease histories.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"161 ","pages":"Pages 164-175"},"PeriodicalIF":6.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145620001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Airborne microplastics and their impact on human health: A critical review 空气中的微塑料及其对人类健康的影响：综述

IF 6.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-06-25 DOI: 10.1016/j.jes.2025.06.047

Yizi Zhang , Pradeep Kumar , Jiahui Yuan , Noor Haleem , Jordan Traub , ZhengRong Gu , Xufei Yang

The pervasive presence of microplastics (MPs) in both outdoor and indoor air environments has raised increasing concerns about their potential health risks. Understanding the health implications of these airborne microplastics (AMPs) is crucial, particularly their role in pollutant transport and human exposure. This review analyzes the potential toxicological effects of AMPs, particularly the interactions of inhaled MPs with human respiratory, hepatic, and reproductive systems. It compiled both in vitro and in vivo studies on inflammatory responses, cellular damage, and translocation of MPs and associated additives within the human body. To identify and prioritize future research areas, we discussed knowledge gaps in existing literature and proposed an interdisciplinary approach to further unveil the complex relationship between AMPs and human health. This work is anticipated to serve as a valuable resource for researchers, policymakers, and health professionals, promoting research and regulation development efforts relevant to AMPs.

室外和室内空气环境中普遍存在的微塑料（MPs）引起了人们对其潜在健康风险的日益关注。了解这些空气中的微塑料（amp）对健康的影响至关重要，特别是它们在污染物运输和人类暴露中的作用。这篇综述分析了MPs的潜在毒理学效应，特别是吸入MPs与人体呼吸、肝脏和生殖系统的相互作用。它汇编了关于人体内炎症反应、细胞损伤和MPs及相关添加剂易位的体外和体内研究。为了确定和优先考虑未来的研究领域，我们讨论了现有文献中的知识差距，并提出了一种跨学科的方法来进一步揭示amp与人类健康之间的复杂关系。这项工作有望成为研究人员、政策制定者和卫生专业人员的宝贵资源，促进与抗菌肽相关的研究和法规制定工作。

{"title":"Airborne microplastics and their impact on human health: A critical review","authors":"Yizi Zhang , Pradeep Kumar , Jiahui Yuan , Noor Haleem , Jordan Traub , ZhengRong Gu , Xufei Yang","doi":"10.1016/j.jes.2025.06.047","DOIUrl":"10.1016/j.jes.2025.06.047","url":null,"abstract":"<div><div>The pervasive presence of microplastics (MPs) in both outdoor and indoor air environments has raised increasing concerns about their potential health risks. Understanding the health implications of these airborne microplastics (AMPs) is crucial, particularly their role in pollutant transport and human exposure. This review analyzes the potential toxicological effects of AMPs, particularly the interactions of inhaled MPs with human respiratory, hepatic, and reproductive systems. It compiled both <em>in vitro</em> and <em>in vivo</em> studies on inflammatory responses, cellular damage, and translocation of MPs and associated additives within the human body. To identify and prioritize future research areas, we discussed knowledge gaps in existing literature and proposed an interdisciplinary approach to further unveil the complex relationship between AMPs and human health. This work is anticipated to serve as a valuable resource for researchers, policymakers, and health professionals, promoting research and regulation development efforts relevant to AMPs.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"161 ","pages":"Pages 277-295"},"PeriodicalIF":6.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145691004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxidative potential of PM2.5 in Guangzhou, Southern China: Source apportionment and association with airborne bacteria 广州PM2.5氧化电位：来源解析及其与空气细菌的关系

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-06-24 DOI: 10.1016/j.jes.2025.06.050

Yuxin Huang , Senchao Lai , Baoling Liang , Jinpu Zhang , Chenglei Pei , Dachi Hong , Xiaoluan Lin , Zhaokang Ruan , Leitao Sun , Yingyi Zhang

Oxidative potential (OP) can be used as an indicator of the health risks of particulate matter in the air. To study the variation and sources of OP, we conducted an observation of PM_2.5 in a megacity in southern China in winter and spring of 2021. The results show that the average concentration of PM_2.5 decreased by 47 % from winter to spring, while volume-normalized and mass-normalized OP (i.e., OP_v and OP_m) increased by 6 % and 69 %, respectively. It suggests that the decline of PM_2.5 may not necessarily decrease the health risks and the intrinsic toxicity of PM_2.5. Variations of OP_v and OP_m among different periods were related to the different source contributions and environmental conditions. The positive matrix factorization model was used to identify the major sources of OP_v. OP_v was mainly contributed by biomass burning/industrial emissions (29 %), soil/road dust (20 %), secondary sulfate (14 %), and coal combustion (13 %) in winter. Different major sources were resolved to be secondary sulfate (36 %), biological sources (21 %), and marine vessels (20 %) in spring, presenting the substantial contribution of biological sources. The analysis shows strong associations between OP_v and both live and dead bacteria, further confirming the important contribution of bioaerosols to the enhancement of OP. This study highlights the importance of understanding OP in ambient PM_2.5 in terms of public health impact and provides a new insight into the biological contribution to OP.

氧化电位（OP）可以作为空气中颗粒物健康风险的指标。为了研究OP的变化和来源，我们在2021年冬季和春季对中国南方某特大城市的PM2.5进行了观测。结果表明，从冬春季到春季，PM2.5的平均浓度下降了47%，而体积归一化和质量归一化的OP（即OPv和OPm）分别增加了6%和69%。这表明PM2.5的下降不一定会降低健康风险和PM2.5的内在毒性。不同时期OPv和OPm的变化与不同的源贡献和环境条件有关。采用正矩阵分解模型识别了OPv的主要来源。冬季的OPv主要来自生物质燃烧/工业排放（29%）、土壤/道路粉尘（20%）、二次硫酸盐（14%）和煤炭燃烧（13%）。不同的主要来源在春季分别为次生硫酸盐（36%）、生物来源（21%）和海洋船只（20%），表明生物来源的贡献很大。分析表明，OPv与活菌和死菌之间存在很强的相关性，进一步证实了生物气溶胶对OPv增强的重要贡献。本研究强调了了解环境PM2.5中OPv对公共卫生影响的重要性，并为OPv的生物贡献提供了新的见解。

{"title":"Oxidative potential of PM2.5 in Guangzhou, Southern China: Source apportionment and association with airborne bacteria","authors":"Yuxin Huang , Senchao Lai , Baoling Liang , Jinpu Zhang , Chenglei Pei , Dachi Hong , Xiaoluan Lin , Zhaokang Ruan , Leitao Sun , Yingyi Zhang","doi":"10.1016/j.jes.2025.06.050","DOIUrl":"10.1016/j.jes.2025.06.050","url":null,"abstract":"<div><div>Oxidative potential (OP) can be used as an indicator of the health risks of particulate matter in the air. To study the variation and sources of OP, we conducted an observation of PM<sub>2.5</sub> in a megacity in southern China in winter and spring of 2021. The results show that the average concentration of PM<sub>2.5</sub> decreased by 47 % from winter to spring, while volume-normalized and mass-normalized OP (i.e., OP<sub>v</sub> and OP<sub>m</sub>) increased by 6 % and 69 %, respectively. It suggests that the decline of PM<sub>2.5</sub> may not necessarily decrease the health risks and the intrinsic toxicity of PM<sub>2.5</sub>. Variations of OP<sub>v</sub> and OP<sub>m</sub> among different periods were related to the different source contributions and environmental conditions. The positive matrix factorization model was used to identify the major sources of OP<sub>v</sub>. OP<sub>v</sub> was mainly contributed by biomass burning/industrial emissions (29 %), soil/road dust (20 %), secondary sulfate (14 %), and coal combustion (13 %) in winter. Different major sources were resolved to be secondary sulfate (36 %), biological sources (21 %), and marine vessels (20 %) in spring, presenting the substantial contribution of biological sources. The analysis shows strong associations between OP<sub>v</sub> and both live and dead bacteria, further confirming the important contribution of bioaerosols to the enhancement of OP. This study highlights the importance of understanding OP in ambient PM<sub>2.5</sub> in terms of public health impact and provides a new insight into the biological contribution to OP.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"Pages 64-72"},"PeriodicalIF":5.9,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polystyrene microplastics impaired decidualization in mice via oxidative stress and inflammation and disrupted the reproductive function of their female offspring 聚苯乙烯微塑料通过氧化应激和炎症损害小鼠的脱个体化，并破坏其雌性后代的生殖功能

IF 6.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-06-24 DOI: 10.1016/j.jes.2025.06.049

Weike Li , Boyin Tan , Jun Xiong , Jiani Diao , Jing Wang , Jing Long , Zhenyin Chen , Yuguang He , Xuemei Chen , Fei Han , Fangfang Li , Junlin He , Yingxiong Wang , Yan Su , Rufei Gao

The extensive utilization of plastics has heightened concerns regarding microplastics exposure. However, the effects of polystyrene microplastics (PS-MPs) on early pregnancy remain inadequately investigated. This study aimed to examine the impact of PS-MPs on decidualization and embryo implantation in female mice, as well as the reproductive function of their offspring following maternal exposure to PS-MPs. We investigated the harmful effects of different PS-MPs sizes on mouse endometrial stromal cells (mESCs) during in vitro decidualization. Pregnant mice were orally given various concentrations of PS-MPs to examine their impact on decidualization. We evaluated oxidative stress and inflammation markers to understand their roles in abnormal decidualization. Additionally, we assessed potential reproductive health impacts on female offspring. Our findings indicated that 5 μm PS-MPs effectively penetrated mESCs and significantly disrupted decidualization compared to smaller or larger particles. Pregnant mice that were exposed to 5 μm PS-MPs at a dose of 1000 mg/(kg·day) exhibited substantial reductions in the decidual area and downregulation of decidualization markers such as BMP2. Inflammatory cytokines increased significantly in mESCs following 5 µm PS-MPs exposure, and the elevated malondialdehyde levels in uterine tissue were mitigated by antioxidant treatment. Moreover, offspring exhibited decreased uterine wet weight, uterine organ coefficients, decidual areas, and expression of BMP2 due to maternal exposure to PS-MPs. These results highlighted the detrimental effects of PS-MPs on maternal decidualization and embryo implantation, suggesting a link to oxidative stress and inflammation, and maternal exposure to PS-MPs during pregnancy impaired reproductive function in offspring females.

塑料的广泛使用加剧了人们对微塑料暴露的关注。然而，聚苯乙烯微塑料（PS-MPs）对早孕的影响仍未得到充分的研究。本研究旨在探讨母体暴露于PS-MPs后，PS-MPs对雌性小鼠脱个体化和胚胎着床的影响，以及其后代生殖功能的影响。我们研究了不同大小的PS-MPs对小鼠子宫内膜基质细胞（mESCs）在体外脱胞过程中的有害影响。怀孕小鼠口服不同浓度的PS-MPs以研究其对去个体化的影响。我们评估了氧化应激和炎症标志物，以了解它们在异常脱个体化中的作用。此外，我们还评估了对雌性后代生殖健康的潜在影响。研究结果表明，与更小或更大的颗粒相比，5 μm的PS-MPs可以有效地穿透mESCs，并显著破坏脱个体化。妊娠小鼠以1000 mg/ kg·d的剂量暴露于5 μm PS-MPs后，蜕膜面积显著减少，BMP2等蜕膜标志物下调。5µm PS-MPs暴露后，mESCs中炎症细胞因子显著增加，抗氧化处理可减轻子宫组织中丙二醛水平升高。此外，由于母体暴露于PS-MPs，子代表现出子宫湿重、子宫器官系数、蜕膜面积和BMP2表达的减少。这些结果强调了PS-MPs对母体脱个体化和胚胎着床的有害影响，表明其与氧化应激和炎症有关，并且母体在怀孕期间暴露于PS-MPs会损害后代雌性的生殖功能。

{"title":"Polystyrene microplastics impaired decidualization in mice via oxidative stress and inflammation and disrupted the reproductive function of their female offspring","authors":"Weike Li , Boyin Tan , Jun Xiong , Jiani Diao , Jing Wang , Jing Long , Zhenyin Chen , Yuguang He , Xuemei Chen , Fei Han , Fangfang Li , Junlin He , Yingxiong Wang , Yan Su , Rufei Gao","doi":"10.1016/j.jes.2025.06.049","DOIUrl":"10.1016/j.jes.2025.06.049","url":null,"abstract":"<div><div>The extensive utilization of plastics has heightened concerns regarding microplastics exposure. However, the effects of polystyrene microplastics (PS-MPs) on early pregnancy remain inadequately investigated. This study aimed to examine the impact of PS-MPs on decidualization and embryo implantation in female mice, as well as the reproductive function of their offspring following maternal exposure to PS-MPs. We investigated the harmful effects of different PS-MPs sizes on mouse endometrial stromal cells (mESCs) during <em>in vitro</em> decidualization. Pregnant mice were orally given various concentrations of PS-MPs to examine their impact on decidualization. We evaluated oxidative stress and inflammation markers to understand their roles in abnormal decidualization. Additionally, we assessed potential reproductive health impacts on female offspring. Our findings indicated that 5 μm PS-MPs effectively penetrated mESCs and significantly disrupted decidualization compared to smaller or larger particles. Pregnant mice that were exposed to 5 μm PS-MPs at a dose of 1000 mg/(kg·day) exhibited substantial reductions in the decidual area and downregulation of decidualization markers such as BMP2. Inflammatory cytokines increased significantly in mESCs following 5 µm PS-MPs exposure, and the elevated malondialdehyde levels in uterine tissue were mitigated by antioxidant treatment. Moreover, offspring exhibited decreased uterine wet weight, uterine organ coefficients, decidual areas, and expression of BMP2 due to maternal exposure to PS-MPs. These results highlighted the detrimental effects of PS-MPs on maternal decidualization and embryo implantation, suggesting a link to oxidative stress and inflammation, and maternal exposure to PS-MPs during pregnancy impaired reproductive function in offspring females.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"162 ","pages":"Pages 51-63"},"PeriodicalIF":6.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatiotemporal variations in radiocarbon age of freshwater organic carbon in the Northern Hemisphere cryosphere: Mechanisms and implications 北半球冰冻圈淡水有机碳放射性碳年龄的时空变化：机制和意义

IF 6.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-06-24 DOI: 10.1016/j.jes.2025.06.043

Siyue Sun , Gongqin Wang , Yixuan Liu , Linfeng Yuan , Yao Li , Xinghui Xia

Rapid climate change in the Northern Hemisphere cryosphere threatens ancient permafrost carbon. Once thawed, permafrost carbon may migrate to surface waters. However, the magnitude of permafrost carbon processed by northern freshwater remains uncertain. Here, we compiled ∼1800 radiocarbon data of aquatic dissolved organic carbon (DOC) and particulate organic carbon (POC) in the Arctic and Qinghai‒Tibet Plateau (QTP) to explore the fate of permafrost carbon under climate warming over the past 30 years. We showed that the contribution of aged carbon has significantly increased since 2015. Approximately 70 % of DOC and POC was derived from aged carbon for QTP rivers. In Arctic waters, an average of ∼67 % of POC was derived from aged carbon, however, ∼75 % of DOC was derived from modern carbon, mainly due to low temperatures and protection by vegetation limiting the export of aged DOC. For both regions, DOC ¹⁴C age was positively correlated with the active layer thickness, whereas the POC ¹⁴C age was positively correlated with the mean annual ground temperature, suggesting that gradual thaw accelerated the mobilization of aged DOC while abrupt thaw facilitated the export of aged POC. Furthermore, POC ¹⁴C age was positively correlated with the soil organic carbon density, which was attributed to well-developed pore networks facilitated aged carbon output. This study suggests that permafrost carbon release is affected by both permafrost thermal properties and soil organic carbon density, which should be considered in evaluation of permafrost carbon‒climate feedback.

北半球冰冻圈的快速气候变化威胁着古代永久冻土的碳。一旦解冻，永久冻土中的碳可能会迁移到地表水。然而，北方淡水处理的永久冻土碳的大小仍然不确定。我们发现，自2015年以来，老化碳的贡献显著增加。约70%的DOC和POC来源于QTP河流的老化碳。在北极水域，平均约67%的POC来自老化碳，然而，约75%的DOC来自现代碳，这主要是由于低温和植被的保护限制了老化DOC的输出。两区DOC 14C年龄均与活动层厚度呈正相关，而POC 14C年龄与年平均地温呈正相关，表明逐渐融化加速了老化DOC的动员，而突然融化则促进了老化POC的输出。此外，POC - 14C年龄与土壤有机碳密度呈正相关，这是由于发达的孔隙网络促进了老化碳的输出。研究表明，冻土碳释放受冻土热性质和土壤有机碳密度的双重影响，应在冻土碳-气候反馈评价中予以考虑。

{"title":"Spatiotemporal variations in radiocarbon age of freshwater organic carbon in the Northern Hemisphere cryosphere: Mechanisms and implications","authors":"Siyue Sun , Gongqin Wang , Yixuan Liu , Linfeng Yuan , Yao Li , Xinghui Xia","doi":"10.1016/j.jes.2025.06.043","DOIUrl":"10.1016/j.jes.2025.06.043","url":null,"abstract":"<div><div>Rapid climate change in the Northern Hemisphere cryosphere threatens ancient permafrost carbon. Once thawed, permafrost carbon may migrate to surface waters. However, the magnitude of permafrost carbon processed by northern freshwater remains uncertain. Here, we compiled ∼1800 radiocarbon data of aquatic dissolved organic carbon (DOC) and particulate organic carbon (POC) in the Arctic and Qinghai‒Tibet Plateau (QTP) to explore the fate of permafrost carbon under climate warming over the past 30 years. We showed that the contribution of aged carbon has significantly increased since 2015. Approximately 70 % of DOC and POC was derived from aged carbon for QTP rivers. In Arctic waters, an average of ∼67 % of POC was derived from aged carbon, however, ∼75 % of DOC was derived from modern carbon, mainly due to low temperatures and protection by vegetation limiting the export of aged DOC. For both regions, DOC <sup>14</sup>C age was positively correlated with the active layer thickness, whereas the POC <sup>14</sup>C age was positively correlated with the mean annual ground temperature, suggesting that gradual thaw accelerated the mobilization of aged DOC while abrupt thaw facilitated the export of aged POC. Furthermore, POC <sup>14</sup>C age was positively correlated with the soil organic carbon density, which was attributed to well-developed pore networks facilitated aged carbon output. This study suggests that permafrost carbon release is affected by both permafrost thermal properties and soil organic carbon density, which should be considered in evaluation of permafrost carbon‒climate feedback.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"161 ","pages":"Pages 454-463"},"PeriodicalIF":6.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145691006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tracing the key influencing factors and predicting the concentration trend of perfluoroalkyl substances (PFASs) in human serum and plasma 追踪人血清和血浆中全氟烷基物质（PFASs）的关键影响因素并预测其浓度趋势

IF 6.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china

Pub Date : 2025-06-24 DOI: 10.1016/j.jes.2025.06.048

Baolin Liu , Xinyu Ma , Junjie Li , Sixu Liu , Yong Yu

This review completed 58,647 data acquisition over 30 years from the published literatures to investigate the distribution, influencing factors and future levels of 15 perfluoroalkyl substances (PFASs) in human serum and plasma. Perfluorooctane sulfonate (PFOS) is the predominant PFAS with a mean of 11.8 ng/mL in serum and 9.32 ng/mL in plasma, accounting more than 50 % of the total of 15 PFASs (∑₁₅PFASs) in most countries. Industrial emission, dietary ingestion and exposure of clothing and paper for packaging food are the primary sources of PFASs in human blood, contributing 41.6 %, 21.3 % and 17.5 % of ∑₁₅PFASs, respectively. High ∑₁₅PFASs are found in serum and plasma from Sweden, Australia, United States and China. A significant declining trend is observed in serum and plasma concentrations of PFOS after 2009. Moreover, gender, pregnancy and exposure significantly influence the blood concentrations of some PFAS congeners. The levels of PFOS, perfluorooctanoic acid, perfluorohexane sulfonic acid in both serum and plasma are predicted to decrease significantly in the next two decades, while those of perfluorodecanoic acid in serum may increase by 69.3 %. This review contributes a valuable perspective for understanding the occurrence, sources, influencing factors and future levels of PFASs in human blood.

本综述从30年来发表的文献中收集了58,647份数据，以调查15种全氟烷基物质（PFASs）在人类血清和血浆中的分布、影响因素和未来水平。全氟辛烷磺酸（PFOS）是主要的全氟辛烷磺酸，平均在血清中为11.8 ng/mL，在血浆中为9.32 ng/mL，占大多数国家15种全氟辛烷磺酸总量（∑15PFASs）的50%以上。工业排放、膳食摄入、服装和食品包装纸暴露是人体血液中PFASs的主要来源，对∑15PFASs的贡献分别为41.6%、21.3%和17.5%。在瑞典、澳大利亚、美国和中国的血清和血浆中发现了高∑15PFASs。2009年后，血清和血浆全氟辛烷磺酸浓度有显著下降趋势。此外，性别、妊娠和暴露显著影响某些PFAS同系物的血药浓度。未来20年，全氟辛烷酸、全氟辛烷磺酸、全氟辛烷磺酸、全氟辛烷磺酸在血清和血浆中的含量将显著下降，而全氟辛烷酸的含量将上升69.3%。这一综述为了解人体血液中全氟辛烷磺酸的发生、来源、影响因素和未来水平提供了有价值的视角。

{"title":"Tracing the key influencing factors and predicting the concentration trend of perfluoroalkyl substances (PFASs) in human serum and plasma","authors":"Baolin Liu , Xinyu Ma , Junjie Li , Sixu Liu , Yong Yu","doi":"10.1016/j.jes.2025.06.048","DOIUrl":"10.1016/j.jes.2025.06.048","url":null,"abstract":"<div><div>This review completed 58,647 data acquisition over 30 years from the published literatures to investigate the distribution, influencing factors and future levels of 15 perfluoroalkyl substances (PFASs) in human serum and plasma. Perfluorooctane sulfonate (PFOS) is the predominant PFAS with a mean of 11.8 ng/mL in serum and 9.32 ng/mL in plasma, accounting more than 50 % of the total of 15 PFASs (∑<sub>15</sub>PFASs) in most countries. Industrial emission, dietary ingestion and exposure of clothing and paper for packaging food are the primary sources of PFASs in human blood, contributing 41.6 %, 21.3 % and 17.5 % of ∑<sub>15</sub>PFASs, respectively. High ∑<sub>15</sub>PFASs are found in serum and plasma from Sweden, Australia, United States and China. A significant declining trend is observed in serum and plasma concentrations of PFOS after 2009. Moreover, gender, pregnancy and exposure significantly influence the blood concentrations of some PFAS congeners. The levels of PFOS, perfluorooctanoic acid, perfluorohexane sulfonic acid in both serum and plasma are predicted to decrease significantly in the next two decades, while those of perfluorodecanoic acid in serum may increase by 69.3 %. This review contributes a valuable perspective for understanding the occurrence, sources, influencing factors and future levels of PFASs in human blood.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"162 ","pages":"Pages 355-365"},"PeriodicalIF":6.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0