Pub Date : 2024-11-20DOI: 10.1016/j.jhazmat.2024.136603
Shuqi Chen, Xia Xiao, Xiaoxiao Song, Tong Luo, Jirong Li, Tengwei Gui, Yan Li
Dyslipidemias may emerge during the fetal period. However, the association between prenatal pyrethroid pesticides (PYRs) exposure and neonatal lipid metabolism remains uncertain. To explore the association of prenatal PYRs exposure and neonates’ lipid metabolism, pregnant women were recruited in rural Yunnan, China, and their urine samples in the first, second, and third trimester and their neonates’ cord blood samples were collected to obtain urinary PYRs metabolites (3PBA, 4F3PBA, and DBCA), cord blood TC, TG, HDL-C, LDL-C, and Non-HDL-C, AIP, CRI-I, CRI-II, AC, and LCI. We found the total PYRs detection during pregnancy was 99.6%. High-level DBCA in the first and third trimester and high-level 3PBA in the second trimester increased risks of high AIP. High-level ∑PYRs in the third trimester enhanced risks of high levels of TG, LDL-C, Non-HDL-C, AIP, and LCI. Repeated high-level 3PBA in two trimesters and above elevated risks of high levels of TG, LDL-C, CRI-I, AIP, AC, and LCI. Repeated high-level DBCA group in two trimesters and above increased the risk of high AIP. Repeated high ∑PYRs in three trimesters intensified risks of high levels of TC, LDL-C, Non-HDL-C, and AIP. Thus, our study suggests high PYRs exposure during the whole pregnancy may increase the risk of neonate abnormal lipid metabolism. The third trimester is the most sensitive window of high prenatal PYRs exposure. The adverse effects on neonate lipid metabolism increased as the increasing of trimesters repeated high-level PYRs exposure during pregnancy. Different kinds of PYRs exposure may induce different cord blood abnormal lipids.
{"title":"Association of maternal pyrethroid pesticides exposure during the whole pregnancy with neonate lipid metabolism: A Prospective Birth Cohort Study, Yunnan, China","authors":"Shuqi Chen, Xia Xiao, Xiaoxiao Song, Tong Luo, Jirong Li, Tengwei Gui, Yan Li","doi":"10.1016/j.jhazmat.2024.136603","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136603","url":null,"abstract":"Dyslipidemias may emerge during the fetal period. However, the association between prenatal pyrethroid pesticides (PYRs) exposure and neonatal lipid metabolism remains uncertain. To explore the association of prenatal PYRs exposure and neonates’ lipid metabolism, pregnant women were recruited in rural Yunnan, China, and their urine samples in the first, second, and third trimester and their neonates’ cord blood samples were collected to obtain urinary PYRs metabolites (3PBA, 4F3PBA, and DBCA), cord blood TC, TG, HDL-C, LDL-C, and Non-HDL-C, AIP, CRI-I, CRI-II, AC, and LCI. We found the total PYRs detection during pregnancy was 99.6%. High-level DBCA in the first and third trimester and high-level 3PBA in the second trimester increased risks of high AIP. High-level ∑PYRs in the third trimester enhanced risks of high levels of TG, LDL-C, Non-HDL-C, AIP, and LCI. Repeated high-level 3PBA in two trimesters and above elevated risks of high levels of TG, LDL-C, CRI-I, AIP, AC, and LCI. Repeated high-level DBCA group in two trimesters and above increased the risk of high AIP. Repeated high ∑PYRs in three trimesters intensified risks of high levels of TC, LDL-C, Non-HDL-C, and AIP. Thus, our study suggests high PYRs exposure during the whole pregnancy may increase the risk of neonate abnormal lipid metabolism. The third trimester is the most sensitive window of high prenatal PYRs exposure. The adverse effects on neonate lipid metabolism increased as the increasing of trimesters repeated high-level PYRs exposure during pregnancy. Different kinds of PYRs exposure may induce different cord blood abnormal lipids.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"165 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Pub Date : 2024-11-20DOI: 10.1016/j.jhazmat.2024.136602
Min Fan, Huili Liang
The soil health of heavy metals in dressing and smelting slag field varies soil physicochemical properties. This study proposed a new soil health index based on heavy metal pollution-buffer-fertility for dressing and smelting slag field. Consequently, spatial distribution of soil physicochemical properties and heavy metals were varied, and correlated to each other. Soil buffer function and fertility played a much more important role in soil health in the dressing and smelting slag field located in Gejiu city, which can result in that soil health indexes were higher than those in Huili county, although the soil heavy metal pollution in the former was severer than that in the latter. Maximum values of soil health indexes for dressing and smelting slag field in Gejiu city were 3.84, 0.61, and 1.75 corresponding to additive, multiplicative, and maximum value composite methods, which were higher than those in Huili county with 2.25, 0.61, and 0.17. The former’s high value is concentrated in southeastern regions and low value in some western areas, the latter’s high value occurred in southeastern districts and low value in northwestern places. So this study unveils a novel perspective on the soil health consequences associated with soil heavy metal pollution-buffer-fertility three aspects.
{"title":"Soil health assessment of dressing and smelting slag field based on heavy metal pollution-buffer-fertility three aspects","authors":"Min Fan, Huili Liang","doi":"10.1016/j.jhazmat.2024.136602","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136602","url":null,"abstract":"The soil health of heavy metals in dressing and smelting slag field varies soil physicochemical properties. This study proposed a new soil health index based on heavy metal pollution-buffer-fertility for dressing and smelting slag field. Consequently, spatial distribution of soil physicochemical properties and heavy metals were varied, and correlated to each other. Soil buffer function and fertility played a much more important role in soil health in the dressing and smelting slag field located in Gejiu city, which can result in that soil health indexes were higher than those in Huili county, although the soil heavy metal pollution in the former was severer than that in the latter. Maximum values of soil health indexes for dressing and smelting slag field in Gejiu city were 3.84, 0.61, and 1.75 corresponding to additive, multiplicative, and maximum value composite methods, which were higher than those in Huili county with 2.25, 0.61, and 0.17. The former’s high value is concentrated in southeastern regions and low value in some western areas, the latter’s high value occurred in southeastern districts and low value in northwestern places. So this study unveils a novel perspective on the soil health consequences associated with soil heavy metal pollution-buffer-fertility three aspects.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"14 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Trifluralin (TRL) is an effective and persistent herbicide, but its extensive and prolonged use has increasingly posed ecological and environmental health risks, making the development of convenient and rapid TRL detection methods essential for environmental protection and food safety. In the present research, a novel fluorescent probe was designed and developed, Zn-χ-L, for the rapid and selective detection of TRL in complex environments. The sensor demonstrates excellent sensitivity and stability, while also exhibiting significant resistance to interference from other pesticides and metal ions. Moreover, Zn-χ-L exhibited stable performance across various solvents and showed resistance to interference from other pesticides and metal ions. Molecular docking and theoretical calculations indicate that the unique recognition of TRL molecules by Zn-χ-L is related to its specific hemispheric structural feature, which forms strong coordination interactions between Zn-χ-L and TRL through coordination bonds, π-π stacking, and halogen bonds. This special conformation not only enables the formation of coordination bonds but also establishes multiple π-π stacking and halogen bonding interactions between Zn-χ-L and TRL, leading to efficient charge transfer and exceptional probe performance.
{"title":"Unique Hemispherical Coordination-Drivened Pesticide Residue Probes: Enhanced Stability in Linear Recognition for Trifluralin","authors":"Meifen Huang, Liang Jiao, Xiangying Li, Qiong Xu, Zhehui Weng, Qiong Wu, Haijun Pang","doi":"10.1016/j.jhazmat.2024.136608","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136608","url":null,"abstract":"Trifluralin (TRL) is an effective and persistent herbicide, but its extensive and prolonged use has increasingly posed ecological and environmental health risks, making the development of convenient and rapid TRL detection methods essential for environmental protection and food safety. In the present research, a novel fluorescent probe was designed and developed, Zn-χ-L, for the rapid and selective detection of TRL in complex environments. The sensor demonstrates excellent sensitivity and stability, while also exhibiting significant resistance to interference from other pesticides and metal ions. Moreover, Zn-χ-L exhibited stable performance across various solvents and showed resistance to interference from other pesticides and metal ions. Molecular docking and theoretical calculations indicate that the unique recognition of TRL molecules by Zn-χ-L is related to its specific hemispheric structural feature, which forms strong coordination interactions between Zn-χ-L and TRL through coordination bonds, π-π stacking, and halogen bonds. This special conformation not only enables the formation of coordination bonds but also establishes multiple π-π stacking and halogen bonding interactions between Zn-χ-L and TRL, leading to efficient charge transfer and exceptional probe performance.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"252 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
The ultrasensitive sensor with three optical response mechanisms was proposed for the determination of trace amounts of norovirus using a 3-in-1 GCSNAs (a gap-containing spherical nucleic acid nanoparticles) probe. A simple and highly sensitive three-mode biosensor with Raman, colorimetric, and fluorescence functions was proposed and implemented using the GCSNAs probe and a DNA hydrogel for norovirus detection. When the virus exists, the trans-cleavage activity of CRISPR-Cas12a was activated by double-stranded dsDNA (dsDNA) generated by reverse transcription and recombinase polymerase isothermal amplification (RT-RPA) to degrade the DNA hydrogel/GCSNA composition and release the three-in-one (3-in-1) probe-GCSNA, realising the triple ultrasensitive detection of norovirus. The colorimetric sensing mode allows for semi-quantitative on-site detection, which is visible to the naked eye and the quantitative detection can be achieved by conducting grayscale analysis using the "Colour Grab" function of a smartphone. This new triple sensor achieved the successful quantification of norovirus at concentrations as low as the femtomolar scale with an excellent selectivity and accuracy. Considering the colorimetric properties of rolling circle amplification (RCA)-based DNA hydrogels and GCSNAs, the proposed method has a broad application prospect in virus on-site detection in food. It should be applicable for virus detection in a wide range of fields such, as environmental analysis, medical diagnosis, and food safety. It is anticipated that this mechanism will open new avenues for the development of multimodal analyses and multifunctional sensing platforms for various applications. We anticipate that this sensing mechanism will open up a new way for the development of food safety detection.
利用三合一 GCSNAs（一种含间隙的球形核酸纳米颗粒）探针，提出了具有三种光学响应机制的超灵敏传感器，用于检测痕量诺如病毒。利用 GCSNAs 探针和用于检测诺如病毒的 DNA 水凝胶，提出并实现了一种具有拉曼、比色和荧光功能的简单而高灵敏的三模式生物传感器。当病毒存在时，通过反转录和重组酶聚合酶等温扩增（RT-RPA）产生的双链dsDNA（dsDNA）激活CRISPR-Cas12a的反式裂解活性，降解DNA水凝胶/GCSNA成分，释放三合一（3-in-1）探针-GCSNA，实现诺如病毒的三重超灵敏检测。比色传感模式可实现肉眼可见的半定量现场检测，而定量检测则可通过使用智能手机的 "色彩抓取 "功能进行灰度分析来实现。这种新型三重传感器成功实现了对浓度低至飞摩尔级的诺如病毒的定量检测，具有极佳的选择性和准确性。考虑到基于滚动圈扩增（RCA）的 DNA 水凝胶和 GCSNA 的比色特性，所提出的方法在食品中病毒现场检测方面具有广阔的应用前景。它可用于环境分析、医疗诊断和食品安全等广泛领域的病毒检测。预计这一机制将为开发多模态分析和多功能传感平台开辟新的途径。我们预计，这种传感机制将为食品安全检测的发展开辟一条新途径。
{"title":"Ultra-sensitive detection of norovirus using a three-in-one CRISPR platform based on a DNA hydrogel and composite functional nanomaterials","authors":"Weiya Wang, Jiadi Sun, Yifei Gao, Xue xia Jia, Yongli Ye, Shuyue Ren, Yuan Peng, Dianpeng Han, Huanying Zhou, Zhixian Gao, Xiulan Sun","doi":"10.1016/j.jhazmat.2024.136523","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136523","url":null,"abstract":"The ultrasensitive sensor with three optical response mechanisms was proposed for the determination of trace amounts of norovirus using a 3-in-1 GCSNAs (a gap-containing spherical nucleic acid nanoparticles) probe. A simple and highly sensitive three-mode biosensor with Raman, colorimetric, and fluorescence functions was proposed and implemented using the GCSNAs probe and a DNA hydrogel for norovirus detection. When the virus exists, the trans-cleavage activity of CRISPR-Cas12a was activated by double-stranded dsDNA (dsDNA) generated by reverse transcription and recombinase polymerase isothermal amplification (RT-RPA) to degrade the DNA hydrogel/GCSNA composition and release the three-in-one (3-in-1) probe-GCSNA, realising the triple ultrasensitive detection of norovirus. The colorimetric sensing mode allows for semi-quantitative on-site detection, which is visible to the naked eye and the quantitative detection can be achieved by conducting grayscale analysis using the \"Colour Grab\" function of a smartphone. This new triple sensor achieved the successful quantification of norovirus at concentrations as low as the femtomolar scale with an excellent selectivity and accuracy. Considering the colorimetric properties of rolling circle amplification (RCA)-based DNA hydrogels and GCSNAs, the proposed method has a broad application prospect in virus on-site detection in food. It should be applicable for virus detection in a wide range of fields such, as environmental analysis, medical diagnosis, and food safety. It is anticipated that this mechanism will open new avenues for the development of multimodal analyses and multifunctional sensing platforms for various applications. We anticipate that this sensing mechanism will open up a new way for the development of food safety detection.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"54 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Chlorpyrifos contamination is a currently on-going issue with significant environmental impacts. As such, rapid and effective techniques that remove chlorpyrifos from the environment are urgently required. Here, a new strain of Pseudomonas nitroreducens W-7 exhibited exceptional degradation ability towards both chlorpyrifos and its major metabolite 3,5,6-trichloro-2-pyridinol (TCP). W-7 can effectively reduce the toxicity of chlorpyrifos and TCP towards a variety of sensitive organisms through its superior degradation capacity. W-7 demonstrated efficient soil bioremediation by removing over 50% of chlorpyrifos (25 mg/kg) from both sterile and non-sterile soils within 5 days, with significantly reduced half-lives. Additionally, 16S rDNA high-throughput sequencing of the soil revealed that the introduction of W-7 had no significant impact on the soil microbial community. A pivotal hydrolase Oph2876 containing conserved motif (HxHxDH) and a bimetallic catalytic center was identified from W-7. Oph2876 was a heat- and alkali-resistant enzyme with low sequence similarity (< 44%) with other reported organophosphorus hydrolases, with a better substrate affinity for hydrolysis of chlorpyrifos to TCP. The molecular docking and site-directed mutagenesis studies indicated that the amino acid residues Asp235, His214, and His282, which were associated with the conserved sequence “HxHxDH”, were crucial for the activity of Oph2876. These findings contribute to a better understanding of the biodegradation mechanism of chlorpyrifos and present useful agents for the development of effective chlorpyrifos bioremediation strategies.
{"title":"Unveiling the hydrolase Oph2876 mediated chlorpyrifos degradation mechanism in Pseudomonas nitroreducens and its potential for environmental bioremediation","authors":"Haoran Song, Wen-Juan Chen, Shao-Fang Chen, Mingqiu Liu, Guiling Si, Xixian Zhu, Kalpana Bhatt, Sandhya Mishra, Mohamed A. Ghorab, Shaohua Chen","doi":"10.1016/j.jhazmat.2024.136570","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136570","url":null,"abstract":"Chlorpyrifos contamination is a currently on-going issue with significant environmental impacts. As such, rapid and effective techniques that remove chlorpyrifos from the environment are urgently required. Here, a new strain of <em>Pseudomonas nitroreducens</em> W-7 exhibited exceptional degradation ability towards both chlorpyrifos and its major metabolite 3,5,6-trichloro-2-pyridinol (TCP). W-7 can effectively reduce the toxicity of chlorpyrifos and TCP towards a variety of sensitive organisms through its superior degradation capacity. W-7 demonstrated efficient soil bioremediation by removing over 50% of chlorpyrifos (25<!-- --> <!-- -->mg/kg) from both sterile and non-sterile soils within 5 days, with significantly reduced half-lives. Additionally, 16S rDNA high-throughput sequencing of the soil revealed that the introduction of W-7 had no significant impact on the soil microbial community. A pivotal hydrolase Oph2876 containing conserved motif (HxHxDH) and a bimetallic catalytic center was identified from W-7. Oph2876 was a heat- and alkali-resistant enzyme with low sequence similarity (< 44%) with other reported organophosphorus hydrolases, with a better substrate affinity for hydrolysis of chlorpyrifos to TCP. The molecular docking and site-directed mutagenesis studies indicated that the amino acid residues Asp235, His214, and His282, which were associated with the conserved sequence “HxHxDH”, were crucial for the activity of Oph2876. These findings contribute to a better understanding of the biodegradation mechanism of chlorpyrifos and present useful agents for the development of effective chlorpyrifos bioremediation strategies.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"229 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Pub Date : 2024-11-19DOI: 10.1016/j.jhazmat.2024.136564
Bingyan Sun, Haifeng Xu, Tan Li, Wenjie Guan, Kaige Wang
Upcycling waste plastic into aromatics presents an attractive strategy to tackle both plastic pollution and energy challenges. However, previous studies often rely on high temperatures, precious metals, and have broad product distributions. In this study, we reported that a Ni/ZSM-5 bifunctional catalyst can directly convert polyethylene (PE) into methylated aromatics with high selectivity under mild conditions, while eliminating the requirement for hydrogen gas and solvents. The liquid yield could attain up to 70.3%, and the aromatics yield could achieve up to 51.7%. Over 78.4% of the aromatics were methylated aromatics including toluene, xylene, and mesitylene. Polymer chains underwent dehydrogenation over Ni and the acid sites in ZSM-5, forming C=C bonds. Certain of these bonds evolved into carbenium ions through the process of proton transfer at the acid sites. The optimization of Ni and acid sites enhanced the oligomerization, cyclization, and aromatization process. The extra mesopores created by Ni on the molecular sieve aid in the generation of aromatics. Furthermore, the Ni/ZSM-5 catalyst demonstrated the ability to convert typical commercial grades of PE plastic, such as gloves and bottles, into aromatics with a selectivity of up to 61.1%. It offers an economically feasible and environmentally friendly upcycling avenue for the circular economy of plastics.
{"title":"Hydrogen-free upcycling of polyethylene waste to methylated aromatics over Ni/ZSM-5 under mild conditions","authors":"Bingyan Sun, Haifeng Xu, Tan Li, Wenjie Guan, Kaige Wang","doi":"10.1016/j.jhazmat.2024.136564","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136564","url":null,"abstract":"Upcycling waste plastic into aromatics presents an attractive strategy to tackle both plastic pollution and energy challenges. However, previous studies often rely on high temperatures, precious metals, and have broad product distributions. In this study, we reported that a Ni/ZSM-5 bifunctional catalyst can directly convert polyethylene (PE) into methylated aromatics with high selectivity under mild conditions, while eliminating the requirement for hydrogen gas and solvents. The liquid yield could attain up to 70.3%, and the aromatics yield could achieve up to 51.7%. Over 78.4% of the aromatics were methylated aromatics including toluene, xylene, and mesitylene. Polymer chains underwent dehydrogenation over Ni and the acid sites in ZSM-5, forming C=C bonds. Certain of these bonds evolved into carbenium ions through the process of proton transfer at the acid sites. The optimization of Ni and acid sites enhanced the oligomerization, cyclization, and aromatization process. The extra mesopores created by Ni on the molecular sieve aid in the generation of aromatics. Furthermore, the Ni/ZSM-5 catalyst demonstrated the ability to convert typical commercial grades of PE plastic, such as gloves and bottles, into aromatics with a selectivity of up to 61.1%. It offers an economically feasible and environmentally friendly upcycling avenue for the circular economy of plastics.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"6 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Nitrate (NO3−) contamination in riverine networks has threatened the environment and human health. Clarifying the NO3− source and environmental fate within the basin under different underlying surfaces is essential for water body protection, especially China's two mother rivers. A series of combination methods were established i.e., field survey, index measurements, isotope-tracing techniques, and material flow analysis in four typical basins to investigate the spatiotemporal variation and source of NO3− pollution and nitrogen cascade characteristics. The dual-isotope coupled with MixSIAR model revealed that manure and sewage were the major NO3− source in the irrigation basin (WY, 76.7%), hilly mountainous basin (YC, 52.3%), and plateau lake basin (DC, 48.7%). However, for the plain-river network basin (CZ), soil leachate was the main source (55.5%). In terms of the N losses to water within agri-environment system, livestock-breeding system in three basins made the biggest contribution among the systems, WY (77.3%), YC (47.3%), and DC (41.8%). While in CZ, about 34.4% of N was delivered from the crop-production system. The N cascade model verified the results of isotope-tracing techniques for each basin. The study provides new insight into NO3−-tracing combining hydrogeochemical indicators, isotopic-tracing techniques, and material flow analysis and guides strategies for mitigating the negative impacts of NO3− pollution on aquatic environments on basin scale.
{"title":"Quantifying the environmental fate and source of nitrate contamination using dual-isotope tracing coupled with nitrogen cascade model on the basin scale","authors":"Zihan Zhao, Xinghua He, Sidi Chen, Letian Ning, Kexin Chen, Yanhua Wang","doi":"10.1016/j.jhazmat.2024.136594","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136594","url":null,"abstract":"Nitrate (NO<sub>3</sub><sup>−</sup>) contamination in riverine networks has threatened the environment and human health. Clarifying the NO<sub>3</sub><sup>−</sup> source and environmental fate within the basin under different underlying surfaces is essential for water body protection, especially China's two mother rivers. A series of combination methods were established i.e., field survey, index measurements, isotope-tracing techniques, and material flow analysis in four typical basins to investigate the spatiotemporal variation and source of NO<sub>3</sub><sup>−</sup> pollution and nitrogen cascade characteristics. The dual-isotope coupled with MixSIAR model revealed that manure and sewage were the major NO<sub>3</sub><sup>−</sup> source in the irrigation basin (WY, 76.7%), hilly mountainous basin (YC, 52.3%), and plateau lake basin (DC, 48.7%). However, for the plain-river network basin (CZ), soil leachate was the main source (55.5%). In terms of the N losses to water within agri-environment system, livestock-breeding system in three basins made the biggest contribution among the systems, WY (77.3%), YC (47.3%), and DC (41.8%). While in CZ, about 34.4% of N was delivered from the crop-production system. The N cascade model verified the results of isotope-tracing techniques for each basin. The study provides new insight into NO<sub>3</sub><sup>−</sup>-tracing combining hydrogeochemical indicators, isotopic-tracing techniques, and material flow analysis and guides strategies for mitigating the negative impacts of NO<sub>3</sub><sup>−</sup> pollution on aquatic environments on basin scale.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"23 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Pub Date : 2024-11-19DOI: 10.1016/j.jhazmat.2024.136579
Ana.E. Pradas del Real, Delphine Vantelon, Charlotte Catrouillet, Imane Khatib, Rémi Tucoulou, Camille Rivard, Sebastian Schoeder, Julien. Gigault, Mélanie. Davranche
This work shows that the plastic debris accumulated along with stranded Sargassum biomass in Guadeloupe’s beaches contains different forms of arsenic. Results from synchrotron nano X-ray Fluorescence (nanoXRF) and nano X-ray Absorption Near Edge Structure (nanoXANES) show that arsenate (As(V) in a tetrahedral coordination) present in seawater is complexed in the algae cell walls in an octahedral As(V) form, which is subsequently reduced to As(III) within the algae. Inorganic As(III) is either excreted or may undergo methylation and/or binding to glutathione, which is then stored in the algal cells or excreted. The areas where As is colocalized with a variety of metals (Si, K, Ca, Fe, Ni Cu and Zn) may correspond with areas in which algae tissues remain adhered to the surface of the plastics. On the opposite, the areas in which As is found together with Ti or Cl may correspond with areas in which the algae has been decomposed or in which As has been adsorbed after being secreted by the algae. Results from this study should be taken into account to assess the ecotoxicological impacts of Sargassum biomass accumulated on beaches, as well as for the planning of its valorization. Plastics within the Sargassum biomass can act as vectors for arsenic, facilitating its transfer to other environmental compartments where the biomass is used or when it is ingested by various organisms. In a context of a growing problem of plastic pollution and a more and more frequent algae blooms, these results are particularly relevant.
这项研究表明，瓜德罗普岛海滩上随搁浅马尾藻生物群一起堆积的塑料碎片含有不同形式的砷。同步辐射纳米 X 射线荧光（nanoXRF）和纳米 X 射线吸收近边缘结构（nanoXANES）的研究结果表明，海水中的砷酸盐（四面体配位的 As(V)）以八面体 As(V) 的形式络合在马尾藻细胞壁中，随后在马尾藻体内还原成 As(III)。无机 As(III) 要么被排出体外，要么被甲基化和/或与谷胱甘肽结合，然后储存在藻类细胞中或被排出体外。砷与多种金属（Si、K、Ca、Fe、Ni、Cu 和 Zn）共聚的区域可能与藻类组织仍粘附在塑料表面的区域相对应。相反，As 与 Ti 或 Cl 同时出现的区域可能与藻类已经分解或藻类分泌 As 后被吸附的区域相对应。在评估马尾藻生物量对海滩生态毒理学的影响以及规划马尾藻生物量的价值时，应考虑本研究的结果。马尾藻生物体内的塑料可作为砷的载体，促进砷转移到使用生物体或各种生物摄入生物体的其他环境区划。在塑料污染问题日益严重、藻类繁殖日益频繁的背景下，这些结果尤为重要。
{"title":"Plastic debris accumulated on Sargassum algae stranded biomass are vectors for different As(V) and As(III) forms","authors":"Ana.E. Pradas del Real, Delphine Vantelon, Charlotte Catrouillet, Imane Khatib, Rémi Tucoulou, Camille Rivard, Sebastian Schoeder, Julien. Gigault, Mélanie. Davranche","doi":"10.1016/j.jhazmat.2024.136579","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136579","url":null,"abstract":"This work shows that the plastic debris accumulated along with stranded Sargassum biomass in Guadeloupe’s beaches contains different forms of arsenic. Results from synchrotron nano X-ray Fluorescence (nanoXRF) and nano X-ray Absorption Near Edge Structure (nanoXANES) show that arsenate (As(V) in a tetrahedral coordination) present in seawater is complexed in the algae cell walls in an octahedral As(V) form, which is subsequently reduced to As(III) within the algae. Inorganic As(III) is either excreted or may undergo methylation and/or binding to glutathione, which is then stored in the algal cells or excreted. The areas where As is colocalized with a variety of metals (Si, K, Ca, Fe, Ni Cu and Zn) may correspond with areas in which algae tissues remain adhered to the surface of the plastics. On the opposite, the areas in which As is found together with Ti or Cl may correspond with areas in which the algae has been decomposed or in which As has been adsorbed after being secreted by the algae. Results from this study should be taken into account to assess the ecotoxicological impacts of Sargassum biomass accumulated on beaches, as well as for the planning of its valorization. Plastics within the Sargassum biomass can act as vectors for arsenic, facilitating its transfer to other environmental compartments where the biomass is used or when it is ingested by various organisms. In a context of a growing problem of plastic pollution and a more and more frequent algae blooms, these results are particularly relevant.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"3 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Pub Date : 2024-11-19DOI: 10.1016/j.jhazmat.2024.136592
Chun-dan Gan, Yu-liang Liao, Heng-bo Liu, Jin-yan Yang, Aleksander Nikitin
Microplastics (MPs) and heavy metals widely coexist in agricultural soils, posing significant risks to soil-plant ecosystems. This study explores the effects of five common MPs—polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), and polylactic acid (PLA)—and environmental-simulating microplastics (EMPs), composed based on the composition of local MPs in agricultural soils, on the bioavailability and phytotoxicity of Cd and Cr in soils. Pot experiments demonstrated that MPs, particularly PE and EMPs at a 5% dosage, markedly decreased soil pH, water-holding capacity, and soil organic carbon content. This decrease in pH led to enhanced Cd and Cr mobility and bioavailability, especially with PE and EMPs increasing Cr bioavailability in 15 cm depth soil by up to 43.9% and 37.8%, respectively. In soils with 2.1 mg/kg of Cd and 390 mg/kg of Cr, both 1% and 5% doses of MPs inhibited wheat growth while enhancing the uptake and translocation of Cd and Cr in wheat. Notably, PE, PS, PLA, and EMPs exposure significantly elevated levels of oxidative stress markers (SOD, POD, CAT, and MDA) in wheat. These findings highlight the importance of further research on the combined impacts of MPs and heavy metals on soil health and plant safety.
{"title":"Microplastic-induced changes in Cd and Cr behavior in the agricultural soil-wheat system: Insights into metal bioavailability and phytotoxicity","authors":"Chun-dan Gan, Yu-liang Liao, Heng-bo Liu, Jin-yan Yang, Aleksander Nikitin","doi":"10.1016/j.jhazmat.2024.136592","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136592","url":null,"abstract":"Microplastics (MPs) and heavy metals widely coexist in agricultural soils, posing significant risks to soil-plant ecosystems. This study explores the effects of five common MPs—polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), and polylactic acid (PLA)—and environmental-simulating microplastics (EMPs), composed based on the composition of local MPs in agricultural soils, on the bioavailability and phytotoxicity of Cd and Cr in soils. Pot experiments demonstrated that MPs, particularly PE and EMPs at a 5% dosage, markedly decreased soil pH, water-holding capacity, and soil organic carbon content. This decrease in pH led to enhanced Cd and Cr mobility and bioavailability, especially with PE and EMPs increasing Cr bioavailability in 15<!-- --> <!-- -->cm depth soil by up to 43.9% and 37.8%, respectively. In soils with 2.1<!-- --> <!-- -->mg/kg of Cd and 390<!-- --> <!-- -->mg/kg of Cr, both 1% and 5% doses of MPs inhibited wheat growth while enhancing the uptake and translocation of Cd and Cr in wheat. Notably, PE, PS, PLA, and EMPs exposure significantly elevated levels of oxidative stress markers (SOD, POD, CAT, and MDA) in wheat. These findings highlight the importance of further research on the combined impacts of MPs and heavy metals on soil health and plant safety.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"57 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Machine learning (ML) models for accurately predicting heavy metals with inconsistent outputs have improved owing to dataset outliers, which influence model reliability and accuracy. A comprehensive technique that combines machine learning and advanced statistical methods was applied to assess data outlier’s effects on ML models. Ten ML models with three outlier detection methods predicted Cr, Ni, Cd, and Pb in Narayanganj soils. XGBoost with density-based spatial clustering of applications with noise (DBSCAN) improved model efficacy (R2). The R2 of Cr, Ni, Cd, and Pb was considerably enhanced by 11.11%, 6.33%, 14.47%, and 5.68%, respectively, indicating that outliers affected the model's HM prediction. Soil factors affected Cr (80%), Ni (72.61%), Cd (53.35%), and Pb (63.47%) concentrations based on feature importance. Contamination factor prediction showed considerable contamination for Cr, Ni, and Cd. LISA revealed Cd (55.4%), Cr (49.3%), and Pb (47.3%) as the significant pollutant (p < 0.05). Moran's I index values for Cr, Ni, Cd, and Pb were 0.65, 0.58, 0.60, and 0.66, respectively, indicating strong positive spatial autocorrelation and clusters with similar contamination. Finally, this work successfully assessed the influence of data outliers on the ML model for soil HM contamination prediction, identifying crucial regions that require rapid conservation measures.
由于数据集异常值会影响模型的可靠性和准确性，用于准确预测重金属的机器学习（ML）模型在输出不一致的情况下得到了改进。我们采用了一种结合了机器学习和先进统计方法的综合技术来评估数据异常值对 ML 模型的影响。采用三种异常值检测方法的 10 个 ML 模型对 Narayanganj 土壤中的铬、镍、镉和铅进行了预测。XGBoost 与基于密度的空间聚类应用（DBSCAN）提高了模型的有效性（R2）。铬、镍、镉和铅的 R2 分别提高了 11.11%、6.33%、14.47% 和 5.68%，表明异常值影响了模型的 HM 预测。根据特征重要性，土壤因子对铬 (80%)、镍 (72.61%)、镉 (53.35%) 和铅 (63.47%) 的浓度有影响。污染因子预测显示，铬、镍和镉的污染程度相当高。LISA 显示，镉（55.4%）、铬（49.3%）和铅（47.3%）是重要污染物（p < 0.05）。铬、镍、镉和铅的 Moran's I 指数值分别为 0.65、0.58、0.60 和 0.66，表明存在较强的正空间自相关性和污染相似的聚类。最后，这项工作成功评估了数据异常值对土壤 HM 污染预测 ML 模型的影响，确定了需要采取快速保护措施的关键区域。
{"title":"Machine learning models with innovative outlier detection techniques for predicting heavy metal contamination in soils","authors":"Ram Proshad, S.M. Asharaful Abedin Asha, Ron Tan, Yineng Lu, Md Anwarul Abedin, Zihao Ding, Shuangting Zhang, Ziyi Li, Geng Chen, Zhuanjun Zhao","doi":"10.1016/j.jhazmat.2024.136536","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136536","url":null,"abstract":"Machine learning (ML) models for accurately predicting heavy metals with inconsistent outputs have improved owing to dataset outliers, which influence model reliability and accuracy. A comprehensive technique that combines machine learning and advanced statistical methods was applied to assess data outlier’s effects on ML models. Ten ML models with three outlier detection methods predicted Cr, Ni, Cd, and Pb in Narayanganj soils. XGBoost with density-based spatial clustering of applications with noise (DBSCAN) improved model efficacy (R<sup>2</sup>). The R2 of Cr, Ni, Cd, and Pb was considerably enhanced by 11.11%, 6.33%, 14.47%, and 5.68%, respectively, indicating that outliers affected the model's HM prediction. Soil factors affected Cr (80%), Ni (72.61%), Cd (53.35%), and Pb (63.47%) concentrations based on feature importance. Contamination factor prediction showed considerable contamination for Cr, Ni, and Cd. LISA revealed Cd (55.4%), Cr (49.3%), and Pb (47.3%) as the significant pollutant (p < 0.05). Moran's I index values for Cr, Ni, Cd, and Pb were 0.65, 0.58, 0.60, and 0.66, respectively, indicating strong positive spatial autocorrelation and clusters with similar contamination. Finally, this work successfully assessed the influence of data outliers on the ML model for soil HM contamination prediction, identifying crucial regions that require rapid conservation measures.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"37 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
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