Environmental Pollution最新文献_第3页

Developmental and metabolic toxicity of diphenyl phosphate: insights from an integrative mechanistic framework in zebrafish embryos 磷酸二苯酯的发育和代谢毒性：从斑马鱼胚胎的综合机制框架的见解

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-12 DOI: 10.1016/j.envpol.2026.127672

Jiahang Li , Yue Huang , Runfeng Chang , Anyu Ni , Lu Fang , Xin Zhou , Miaomiao Teng , Qiuhui Qian , Zejun Wang , Shanshan Di , Xuedong Wang , Huili Wang , Jin Yan

Diphenyl Phosphate (DPhP), as a major metabolite and environmental pollutant of aromatic organophosphorus flame retardants, has garnered considerable attention due to its widespread occurrence in environmental matrices and potential health risks. In this study, we established an integrative framework combining network toxicology, transcriptomics, and zebrafish assays to elucidate the toxicological mechanisms of DPhP. Network toxicology and transcriptomic analyses consistently revealed that DPhP-responsive genes were predominantly enriched in pathways governing cellular energy homeostasis, including glucose–lipid metabolism and mitochondrial oxidative phosphorylation. These results collectively suggest that DPhP perturbs glucose and lipid metabolic processes, impairs mitochondrial function, and compromises ATP-generating capacity. In vivo validation using zebrafish further demonstrated pronounced metabolic reprogramming following DPhP exposure. At 25 μM, DPhP significantly elevated whole-body glucose (∼1.3-fold vs. control) and pyruvate levels (∼5-fold), and induced hepatic lipid accumulation, as evidenced by increased triglyceride (TG; ∼3-fold) and total cholesterol (T-CHO; ∼3-fold) concentrations. This metabolic shift was accompanied by a marked decline in mitochondrial membrane potential, inhibition of electron transport chain activity, and a substantial reduction in ATP content (to less than 25 % of control). These metabolic perturbations ultimately manifested as pericardial edema, impaired growth, vascular abnormalities, and concentration-dependent behavioral alterations. By delineating the cascade from mitochondrial dysfunction to systemic energy imbalance and multi-organ toxicity, this study provides novel mechanistic insights into the action of DPhP. Furthermore, the integrative paradigm linking chemical structure analysis, target prediction, omics profiling, and in vivo validation offers a versatile methodological framework for advancing mechanistic toxicology research and environmental risk assessment of emerging contaminants.

磷酸二苯酯（Diphenyl Phosphate, DPhP）作为芳香族有机磷阻燃剂的主要代谢物和环境污染物，因其在环境基质中的广泛存在和潜在的健康风险而受到广泛关注。在这项研究中，我们建立了一个结合网络毒理学、转录组学和斑马鱼实验的综合框架来阐明DPhP的毒理学机制。网络毒理学和转录组学分析一致显示，dphp应答基因主要富集在控制细胞能量稳态的途径中，包括糖脂代谢和线粒体氧化磷酸化。这些结果共同表明，DPhP扰乱了葡萄糖和脂质代谢过程，损害了线粒体功能，并损害了atp生成能力。斑马鱼体内验证进一步证明了DPhP暴露后明显的代谢重编程。在25 μM时，DPhP显著升高全身葡萄糖（与对照组相比约1.3倍）和丙酮酸水平（约5倍），并诱导肝脏脂质积累，如甘油三酯（TG，约3倍）和总胆固醇（T-CHO，约3倍）浓度升高所证明。这种代谢转变伴随着线粒体膜电位的显著下降、电子传递链活性的抑制和ATP含量的大幅降低（低于对照组的25%）。这些代谢紊乱最终表现为心包水肿、生长受损、血管异常和浓度依赖性行为改变。通过描述从线粒体功能障碍到全身能量失衡和多器官毒性的级联反应，本研究为DPhP的作用提供了新的机制见解。此外，结合化学结构分析、靶标预测、组学分析和体内验证的综合范式为推进机制毒理学研究和新兴污染物的环境风险评估提供了一个通用的方法框架。

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引用次数: 0

Study on the tissue-specific bioaccumulation, health risk, and integrated biomarker response of polycyclic aromatic hydrocarbons in clams Mactra veneriformis collected from typical bays, China 中国典型海湾蛤蚌多环芳烃的组织特异性生物积累、健康风险及综合生物标志物响应研究

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-10 DOI: 10.1016/j.envpol.2026.127666

Zeyuan Li , Ruicheng Qi , Rongjun Cai , Songhui Xie , Pengfei Li , Luqing Pan

Polycyclic aromatic hydrocarbons (PAHs), as a typical type of important persistent organic pollutants (POPs) are hard to control since they are mainly derived from incomplete combustion of organic matters. This study investigates the occurrence, ecological and health risks, and tissue-specific biological effects of 16 priority PAHs in sediments and the clam Mactra veneriformis from Laizhou Bay and Haizhou Bay, China. Sediment PAH concentrations were moderate compared to other Chinese bays but lower than many international systems, with mean effect range-median quotient (M-ERM-Q) values indicating low ecological risk. Tissue-specific analysis revealed the digestive gland accumulated significantly higher levels of PAHs, resulting in elevated health risks (incremental lifetime cancer risk and margin of exposure) compared to gill, mantle, and adductor muscle. A novel tissue-specific integrated biomarker response (IBR) approach was developed, incorporating biomarker screening via Spearman's correlation with PAHs levels. The digestive gland IBR demonstrated the strongest correlation with pollution and risk indices, supporting its utility as a sensitive monitoring tool for its significance as early warning indicators. This research provides a holistic framework for assessing PAHs contamination using tissue-specific bioaccumulation, biomarker screening, and risk evaluation, offering valuable insights for monitoring POPs in coastal ecosystems.

多环芳烃（PAHs）是一类典型的重要持久性有机污染物，主要来源于有机质的不完全燃烧，难以控制。研究了莱州湾和海州湾沉积物和蛤蚌中16种重点多环芳烃的存在、生态健康风险和组织特异性生物学效应。与中国其他海湾相比，沉积物多环芳烃浓度适中，但低于许多国际系统，平均效应范围-中位数商（M-ERM-Q）值表明生态风险较低。组织特异性分析显示，与鳃、地幔和内收肌相比，消化腺积累的多环芳烃水平明显更高，导致健康风险升高（终生癌症风险和暴露范围增加）。研究人员开发了一种新的组织特异性综合生物标志物反应（IBR）方法，通过Spearman's与多环芳烃水平的相关性来筛选生物标志物。消化腺IBR与污染和风险指标的相关性最强，支持其作为早期预警指标的敏感监测工具的实用性。本研究通过组织特异性生物积累、生物标志物筛选和风险评估，为评估多环芳烃污染提供了一个整体框架，为监测沿海生态系统中的持久性有机污染物提供了有价值的见解。

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引用次数: 0

Comment on “Volatile organic compound metabolites and kidney function in children near a petrochemical complex” 对“某石化企业附近儿童挥发性有机物代谢物与肾功能”的评析

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-10 DOI: 10.1016/j.envpol.2026.127663

Chandrashekar Patil , Amit Singh Pawaiya , Ranjana Roy , Hariharan Srinivasan

引用次数: 0

Drosophila melanogaster as model organism to assess brake dust toxicity by a multi-platform approach 以黑腹果蝇为模式生物，以多平台方法评估刹车粉尘的毒性

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-10 DOI: 10.1016/j.envpol.2026.127661

Michele De Rosa , Emanuele Vaccarella , Flavia Cerasti , Valentina Lucchesi , Federico Marini , Lorenzo Massimi , Valentina Mastrantonio , Fabio Sciubba , Mariangela Spagnoli , Daniele Porretta , Caterina Tiraboschi , Silvia Canepari

Exposure to brake dust, a component of non-exhaust contribution by vehicular traffic, poses a significant global health threat due to its high content of potentially toxic elements (PTEs). This study employed an innovative approach using untargeted metabolomics on the model organism Drosophila melanogaster adults following larval exposure to brake dust.

We exposed or not (control) D. melanogaster larvae in laboratory conditions to brake dust in the food medium at two concentrations: 75 and 750 mg/L. In adult individuals, we assessed both elemental accumulation via ICP-MS analysis (25 elements) as an exposure marker and metabolomic alterations via NMR analysis as an effect marker. Larval brake dust exposure resulted in the significant accumulation of several PTEs (i.e. Bi, Cu, Fe, Sb, Sn, W) in adults and induced a developmental delay at the highest dose (750 mg/L). Metabolomic analysis revealed a distinct stress signature: a generalized decrease in free amino acids (suggesting hyperactive protein synthesis for detoxification/damage repair, including metallothioneins) and a contrasting increase in Glutamine (bolstering glutathione-mediated antioxidant defence). Further signs of metabolic distress included Krebs Cycle disruption and suggested gut microbiota alterations.

Overall, our findings demonstrate that larval brake dust exposure causes persistent, system-wide metabolic shifts in adults. The proposed metallomics-metabolomics multi-platform approach using D. melanogaster may represent a powerful tool for advancing toxicological science related to particulate matter health assessment.

刹车粉尘是车辆交通非废气排放的一个组成部分，由于其潜在有毒元素（pte）含量高，接触刹车粉尘对全球健康构成重大威胁。这项研究采用了一种创新的方法，使用非靶向代谢组学对模式生物黑腹果蝇成虫暴露于刹车灰尘后进行研究。

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引用次数: 0

Electroactive PVDF/Ti3C2Tx MXene functionalized nanofiber mats with high surface potential for high-efficiency indoor & outdoor submicron PM(0.3-2)μm filtration 电活性PVDF/Ti3C2Tx MXene功能化纳米纤维垫具有高表面电位，用于室内和室外亚微米PM(0.3-2)μm的高效过滤

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-10 DOI: 10.1016/j.envpol.2026.127659

Ashish Kakoria , Mirza Muhammad Zaid , Aamir Iqbal , Mahsa Moradi , Lina Zheng , Guang Xu

Fine PM_0.3-2.0 rapidly penetrates the respiratory system and causes health problems. Commercial filters remove 0.3 μm particles at ∼95 % efficiency but impose high pressure drops that make breathing difficult. We fabricate a novel electrospun PVDF-Ti₃C₂T_x nanofiber mat for PM0.3–2.0 filtration. Where a high electric field stretched PVDF and PVDF-Ti₃C₂T_x solutions into ultrafine fibers that were collected as porous nanofibrous mats. PVDF was chosen for its electroactive behavior and high dielectric constant, enabling efficient electrostatic filtration. The incorporation of Ti₃C₂T_x MXene enhances surface charge density and interfacial polarization, strengthening particle-fiber interactions for improved submicron particulate capture. The mat delivers 99.99 % filtration efficiency at 0.3 μm with a nominal pressure drop of 14.38 Pa/cm² and a quality factor of 0.05 Pa⁻¹. Filtration is governed by van der Waals and enhanced dipole-dipole/induced-dipole interactions between fibers and particles. We attribute the improved performance to surface-terminating polar groups (O, OH, F) on Ti₃C₂T_x flakes that raise conductivity and surface potential, strengthening intermolecular forces (Si–OH, C–OH, C=O). PM_0.3 adsorption rates for pure Ti₃C₂T_x film, PVDF nanofiber, and PVDF-Ti₃C₂T_x are 52 μg/cm²/h, 12.1 μg/cm²/h, and 88.8 μg/cm²/h, respectively, consistent with interaction forces of 7 nN (PVDF/PM) and 22 nN (PVDF-Ti₃C₂T_x/PM). SKPM mapping shows nearly uniform electrostatic profiles with surface potentials of −7.32 to −8.44 V (PVDF) and −8.93 to 9.0 V (PVDF-Ti₃C₂T_x). Both mats remain hydrophobic by contact-angle analysis. Overall, this first-time PVDF-Ti₃C₂T_x nanofiber filter matches or exceeds commercial products, offering low ΔP and high efficiency for PM_0.3 removal. These results clarify capture mechanisms and support scalable use in breathable face masks.

细小的PM0.3-2.0会迅速渗入呼吸系统，引发健康问题。商用过滤器去除0.3 μm颗粒的效率约为95%，但压力降高，呼吸困难。制备了一种新型静电纺PVDF-Ti3C2Tx纳米纤维垫，用于PM0.3-2.0的过滤。其中，高电场将PVDF和PVDF- ti3c2tx溶液拉伸成超细纤维，收集成多孔纳米纤维垫。选择PVDF是因为它的电活性和高介电常数，可以实现高效的静电过滤。Ti3C2Tx MXene的掺入增强了表面电荷密度和界面极化，增强了粒子与纤维的相互作用，从而改善了亚微米颗粒的捕获。该滤垫在0.3 μm下的过滤效率为99.99%，标称压降为14.38 Pa/cm2，质量系数为0.05 Pa−1。过滤是由范德华和增强的偶极子-偶极子/诱导偶极子纤维和颗粒之间的相互作用。我们将性能的提高归因于Ti3C2Tx薄片上的表面终止极性基团（O， OH， F）提高了电导率和表面电位，增强了分子间力（Si-OH, C - OH， C=O）。纯Ti3C2Tx膜、PVDF纳米纤维和PVDF-Ti3C2Tx对PM0.3的吸附率分别为52 μg/cm2/h、12.1 μg/cm2/h和88.8 μg/cm2/h，符合7 nN （PVDF/PM）和22 nN （PVDF-Ti3C2Tx/PM）的相互作用力。SKPM映射显示静电分布均匀，表面电位为-7.32 ~ -8.44 V （PVDF）和-8.93 ~ 9.0 V （PVDF- ti3c2tx）。通过接触角分析，两种垫子都保持疏水性。总体而言，这种首次PVDF-Ti3C2Tx纳米纤维过滤器匹配或超过商业产品，提供低ΔP和高效的PM0.3去除。这些结果阐明了捕获机制，并支持在透气面罩中可扩展使用。

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引用次数: 0

Characterization of insecticide resistance across aquatic arthropods of the California Sacramento River watershed 加州萨克拉门托河流域水生节肢动物对杀虫剂抗性的研究

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-09 DOI: 10.1016/j.envpol.2026.127665

Helen C. Poynton , Irina A. Polunina-Proulx , Taryn Broughal , Elijah Wallace , Spencer G. Caddigan , Junna Wang , Sharon P. Lawler , Richard E. Connon , Michael J. Lydy

Phenylpyrazole and pyrethroid insecticides are ubiquitous in waterways throughout the United States and impact aquatic invertebrate communities that are susceptible to their high concentrations common during rain events. In high exposure areas, the non-target crustacean Hyalella azteca, has evolved resistance to pyrethroid insecticides, protecting their populations from mortality. To better understand the extent of adaptive resistance within the invertebrate community of the Sacramento River watershed, CA, USA, aquatic arthropods were collected for evaluation of resistance mutations in two genes: resistance to dieldrin (rdl) and voltage-gated sodium channel (vgsc), the target genes of phenylpyrazole and pyrethroid insecticides. We targeted areas of the genes known to harbor resistance mutations and obtained partial sequences for rdl and vgsc across six arthropod orders. RDL protein sequences differed between crustaceans and hexapods at a critical amino acid (A301 in insects and S/G301 in crustaceans) associated with fipronil resistance in insects suggesting a genetic rationale for differences in fipronil sensitivity across arthropod orders. No resistance mutations were identified in the initial arthropods sequenced and a more extensive study of rdl and vgsc sequences in Chironomidae and Hyalellidae was performed across several sites in the Cache Slough. As seen previously, H. azteca populations showed evidence of resistance to pyrethroids, but no evidence of resistance was detected in Chironomidae to either insecticide class despite their high sensitivity to fipronil. To maintain populations in the Cache Slough, it is likely these chironomid populations are repopulated by flying adults from neighboring waterways following high episodic exposures of insecticides.

苯吡唑和拟除虫菊酯杀虫剂在美国各地的水道中无处不在，并影响水生无脊椎动物群落，这些群落易受降雨期间高浓度杀虫剂的影响。在高暴露地区，非目标甲壳类阿兹特克透明藻已进化出对拟除虫菊酯类杀虫剂的抗性，从而保护其种群免于死亡。为了更好地了解美国加利福尼亚州萨克拉门托河流域无脊椎动物群落的适应性抗性程度，收集了水生节肢动物，对苯吡唑和拟除虫菊酯类杀虫剂靶基因狄氏剂（rdl）和电压门控钠通道（vgsc）两个基因的抗性突变进行了评估。我们针对已知存在抗性突变的基因区域，获得了6个节肢动物目中rdl和vgsc的部分序列。与氟虫腈抗性相关的关键氨基酸（昆虫的A301和甲壳类动物的S/G301）的RDL蛋白序列在甲壳类动物和六足动物之间存在差异，这表明在节肢动物目之间氟虫腈敏感性存在差异的遗传基础。在最初的节肢动物测序中没有发现抗性突变，在Cache Slough的几个地点对Chironomidae和Hyalellidae的rdl和vgsc序列进行了更广泛的研究。如前所述，阿兹特克蠓种群显示出对拟除虫菊酯类杀虫剂的抗性证据，但手蛾科虽对氟虫腈高度敏感，但未发现对这两类杀虫剂的抗性证据。为了维持卡什沼泽的种群数量，这些摇尾蝇很可能是通过从邻近水道飞来的成虫在大量接触杀虫剂后重新繁殖的。

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引用次数: 0

Spatiotemporal evolution and anomaly assessment of wildfire-induced air pollution across Canada using satellite AOD analysis 基于卫星AOD分析的加拿大野火大气污染时空演变与异常评价

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-09 DOI: 10.1016/j.envpol.2026.127667

Yueyu Su , Ziyu Wang , Haiyan Fu , Aili Yang , Xiujuan Chen , Chunjiang An

The 2023 wildfires caused serious risks to air quality and public health across various provinces in Canada, particularly during the period from May to June. This study aims to systematically evaluate the impact of the May–June wildfire events on air pollution in Canada using satellite Aerosol Optical Depth (AOD) data, along with the Hybrid Single-Particle Lagrangian Integrated Trajectory model and a Bayesian spatiotemporal dynamic model to investigate the distribution, transport pathways, and complex meteorological drivers. Results indicate that the AOD data in the Canadian region is in excellent agreement with the ground-based AOD observation (R > 0.90 at 12 of 14 sites). The highest aerosol concentrations were centered over western and central provinces during the wildfire season, with long-range eastward transport. Quebec (26 %) and Alberta (25 %) constituted over half of the national total for severe pollution events, while the Northwest Territories experienced the most prolonged exposure, with 45 % of its remote communities severely affected. The temperature lag and wind speed are the dominant factors and exhibited highly dynamic roles during four main periods: wind speed's function shifted from a local dispersant (WS = −0.419) to a regional transporter (WS1 = 0.123, one-day lagged) depending on fire source configuration, while temperature's influence ranged from enhancing dispersion (T1 = −0.634, one-day lagged) to causing extreme pollutant trapping under heat dome conditions (T1 = 1.273).

2023年的野火对加拿大各省的空气质量和公众健康造成了严重威胁，特别是在5月至6月期间。本研究利用卫星气溶胶光学深度（AOD）数据，结合混合单粒子拉格朗日综合轨迹模型和贝叶斯时空动力学模型，系统评估加拿大5 - 6月野火事件对空气污染的影响，探讨其分布、传输路径和复杂的气象驱动因素。结果表明，加拿大地区的AOD数据与地面AOD观测结果吻合良好（14个站点中有12个站点的R值为0.90）。在野火季节，气溶胶浓度最高的地区集中在西部和中部省份，并有远距离的向东输送。魁北克省（26%）和阿尔伯塔省（25%）占全国严重污染事件总数的一半以上，而西北地区经历了最长的暴露时间，其45%的偏远社区受到严重影响。温度滞后和风速是主导因素，在4个主要时期表现出高度的动态作用：风速的作用根据火源配置从局部分散剂（WS = -0.419）转变为区域转运剂（WS1 = 0.123，滞后1天），而温度的影响范围从增强扩散（T1 = -0.634，滞后1天）到在热罩条件下造成极端污染物捕获（T1 = 1.273）。

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引用次数: 0

Source tracking, pollution load, and risk assessment of microplastics pollution in agricultural soils of Bangladesh using machine learning and multi-matrix approaches 使用机器学习和多矩阵方法对孟加拉国农业土壤中微塑料污染的来源跟踪、污染负荷和风险评估

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-09 DOI: 10.1016/j.envpol.2026.127669

Aditi Biswas , Partha Chandra Debnath , Khandakar Rashedul Islam , MD Jahid Hasan , Sarajit Sarker , Sk Mahmudul Hasan Asif , Md Abu Rayhan , Md Simoon Nice , Monishanker Halder , Tapos Kumar Chakraborty , Samina Zaman , Gopal Chandra Ghosh

Microplastics (MPs) contamination in agricultural soils has emerged as a critical environmental challenge, particularly in Bangladesh, where agriculture underpins food security and trade. This study provides one of the first comprehensive assessments of MPs in agricultural land, highlighting both their prevalence and ecological risks. A total of 64 soil samples were collected from eight areas from January to February 2024. Our findings reveal that MPs are present at concerning levels (2887.81 ± 1027.23 MP/kg dw), with fibres, small-sized particles (0.1–0.5 mm), transparent MPs overwhelmingly dominant and polyethene, polystyrene, and polypropylene identified as the most abundant polymers. Importantly, risk indices such as the Pollution Load Index (PLI) and Nemerow Pollution Index (NPI) consistently indicated medium to severe contamination. At the same time, the Polymeric Hazard Index showed that over 80 % of the study area is exposed to very high polymer-associated ecological risks. The SEM-EDS analysis confirmed the presence of secondary MPs alongside toxic elements such as Hg, Cr, As, and Cd, underscoring the potential for MPs to act as vectors of hazardous substances. Furthermore, multivariate and machine learning approaches (Random Forest and XGBoost)identified agricultural practices—particularly the use of bio-fertilisers and plastic inputs—as the dominant contributors. Soil properties, including electrical conductivity, salinity, pH, and organic carbon, emerged as key controlling factors, demonstrating the utility of data-driven models for risk estimation. By combining traditional risk indices with advanced analytical and predictive tools, this study not only establishes the scale of MPs contamination in Bangladeshi agricultural soils but also provides actionable insights into its drivers and agricultural implications—identifying pollution hotspots, which enhance sustainable farming practices and targeted interventions to mitigate MPs pollution.

农业土壤中的微塑料污染已成为一项严峻的环境挑战，特别是在农业支撑粮食安全和贸易的孟加拉国。这项研究首次对农业用地上的MPs进行了全面评估，突出了它们的流行程度和生态风险。2024年1 - 2月在8个地区共采集了64份土壤样本。我们的研究结果表明，MPs存在于相关水平（2887.81±1027.23 MPs/kg dw），其中纤维、小尺寸颗粒（0.1-0.5 mm）、透明MPs占绝大多数，聚乙烯、聚苯乙烯和聚丙烯被确定为最丰富的聚合物。重要的是，污染负荷指数（PLI）和内梅罗污染指数（NPI）等风险指数一致表明中度至重度污染。与此同时，聚合物危害指数显示，超过80%的研究区暴露于极高的聚合物相关生态风险中。SEM-EDS分析证实了次生多聚体与汞、铬、砷和镉等有毒元素一起存在，强调了多聚体作为有害物质载体的潜力。此外，多元和机器学习方法（随机森林和XGBoost）确定农业实践-特别是生物肥料和塑料投入的使用-是主要贡献者。土壤性质，包括电导率、盐度、pH值和有机碳，成为关键的控制因素，证明了数据驱动模型在风险评估中的实用性。通过将传统风险指数与先进的分析和预测工具相结合，本研究不仅确定了孟加拉国农业土壤中多聚物污染的规模，而且还提供了可操作的见解，了解其驱动因素和农业影响——确定污染热点，从而加强可持续农业实践和有针对性的干预措施，以减轻多聚物污染。

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引用次数: 0

Occurrence, composition profiles, and human exposure assessment of liquid crystal monomers in indoor dust from Wuxi, China 中国无锡室内粉尘中液晶单体的发生、组成和人体暴露评估

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-08 DOI: 10.1016/j.envpol.2026.127651

Yiyang Yao , Linlin Wu , Run Zhou , Xi Wang , Yan Gong , Rong Chen , Wenwei Liu

Liquid crystal monomers (LCMs), widely used in liquid crystal devices, have recently attracted increasing attention due to their persistence, bioaccumulation potential, and emerging toxicological concerns. However, their occurrence and distribution in everyday indoor environments remain poorly characterized. In this study, 47 LCMs were quantified in indoor dust collected from digital stores and residential homes in Wuxi, China. LCMs were detected in all indoor samples, with total concentrations in digital store dust ranging from 15.6 to 704 ng/g (median: 60.2 ng/g), significantly higher than residential dust levels of 0.503–79.9 ng/g (median: 4.58 ng/g). In digital stores, fluorinated and non-fluorinated LCMs were negatively correlated, whereas no significant correlation was observed in residences, suggesting different sources or environmental behaviors. Exposure assessment suggested that dust ingestion and dermal contact were the dominant exposure pathways, and estimated daily intakes were higher for children than for adults. Although hazard quotients for the 15 LCMs with available toxicity benchmarks were all below unity, the lack of comprehensive toxicological reference values introduces substantial uncertainty into the risk characterization. Overall, this study identifies digital stores as important indoor hotspots for LCM contamination and highlights critical data gaps, underscoring the need for further toxicological research to support robust human health risk assessment.

液晶单体（lcd单体）广泛应用于液晶器件中，近年来由于其持久性、生物蓄积性和新出现的毒理学问题而受到越来越多的关注。然而，它们在日常室内环境中的发生和分布特征仍然很差。在这项研究中，从中国无锡的数字商店和住宅收集的室内灰尘中量化了47种LCMs。在所有室内样本中都检测到LCMs，数字存储粉尘的总浓度范围为15.6至704 ng/g（中位数：60.2 ng/g），显著高于住宅粉尘的0.503至79.9 ng/g（中位数：4.58 ng/g）。在数字商店中，氟化和非氟化lcm呈负相关，而在住宅中没有观察到显著的相关性，这表明不同的来源或环境行为。暴露评估表明，灰尘摄入和皮肤接触是主要的暴露途径，儿童的估计每日摄入量高于成人。尽管具有可用毒性基准的15种LCMs的危害商数均低于1，但缺乏全面的毒理学参考值给风险表征带来了很大的不确定性。总体而言，本研究将数字商店确定为LCM污染的重要室内热点，并强调了关键的数据缺口，强调了进一步毒理学研究以支持可靠的人类健康风险评估的必要性。

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引用次数: 0

Whales Contribute to Novel Insight on Poly- and Perfluoroalkyl Substances Bioaccumulation in the East China Sea 鲸鱼对东海多氟和全氟烷基物质生物积累的新认识

IF 8.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-08 DOI: 10.1016/j.envpol.2026.127662

Tao Zhang, Tianhui Zhao, Ziyang Wei, Guang Yang, Cheng Gu, Bingyao Chen, Bo Zhang

We quantified twenty-four poly- and perfluoroalkyl substances (PFASs)—including perfluoroalkyl sulfonates (PFSAs), perfluoroalkyl carboxylates (PFCAs), emerging PFAS as well as PFAS precursors—in tissue samples of minke whale (Balaenoptera acutorostrata), Eden's whale (Balaenoptera edeni), and sperm whale (Physeter macrocephalus) from the East China Sea. Median long-chain PFCA concentrations (0.16–5.24 ng/g ww) significantly exceeded short-chain homolog levels (0.04–0.19 ng/g ww) across whale tissues. As the alternative of perfluorooctane sulfonate (PFOS), moreover, 6:2 chlorinated polyfluorinated ether sulfonate (6:2 Cl-PFESA) was ubiquitous in whales (median: 0.42 ng/g ww), regardless of tissue types. Tissue-specific accumulation analysis showed that the distribution pattern of 6:2 Cl-PFESA resembled that of PFOS whereas the tissue distribution patterns were different between short-chain and long-chain PFCAs. In order to examine the species-specific accumulation, we also compared the results found in whales by this study with the results observed in finless porpoises (Neophocaena asiaeorientalis sunameri) by our previous study. Interestingly, fluorotelomer unsaturated carboxylates (FTUCAs) were detected in all whales but absence in finless porpoises; conversely, varied 6:2 Cl-PFESA/PFOS concentration ratios in tissues were also found among all species with the maximum value at 1.12 in sperm whale. Therefore, marine monitoring of PFAS relying on a single bioindicator species can be biased, and our results indicated high accumulation patterns of long-chain PFCAs and 6:2 Cl-PFESA in those species living in offshore with whales as bioindicators.

我们定量分析了东海小须鲸（Balaenoptera acutorostrata）、Eden’s whale （Balaenoptera edeni）和抹香鲸（Physeter macrocephalus）组织样品中的24种多氟烷基和全氟烷基物质（PFASs），包括全氟烷基磺酸盐（PFSAs）、全氟烷基羧酸盐（PFCAs）、新出现的PFAS以及PFAS前体。长链PFCA中位浓度（0.16-5.24 ng/g ww）显著超过短链同源水平（0.04-0.19 ng/g ww）。此外，作为全氟辛烷磺酸（PFOS）的替代品，6:2氯化多氟醚磺酸（6:2 cl - PFOS）在鲸鱼中普遍存在（中位数：0.42 ng/g ww），无论其组织类型如何。组织特异性积累分析表明，6:2 cl - pfsa的分布模式与PFOS相似，而短链和长链PFCAs的组织分布模式不同。为了研究物种特异性积累，我们还将本研究在鲸鱼中发现的结果与我们之前在无鳍江豚（Neophocaena asiaeorientalis sunameri）中观察到的结果进行了比较。有趣的是，在所有鲸鱼中都检测到氟端粒不饱和羧酸（ftuca），但在无鳍海豚中没有；相反，所有物种组织中cl - pesa /PFOS浓度比也存在6:2的差异，抹香鲸的最大值为1.12。因此，依赖单一生物指示物种的海洋PFAS监测可能存在偏差，我们的结果表明，以鲸鱼为生物指示物种生活在近海的物种中，长链PFCAs和6:2 Cl-PFESA的积累模式较高。

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