Journal of hazardous materials最新文献_第6页

Polystyrene nanoplastics enhance thrombosis through adsorption of plasma proteins. 聚苯乙烯纳米塑料通过吸附血浆蛋白促进血栓形成。

IF 11.3

Journal of hazardous materials Pub Date : 2024-12-05 Epub Date: 2024-10-15 DOI: 10.1016/j.jhazmat.2024.136168

Chao Sheng, Guozhen Wang, Zijia Liu, Yuchen Zheng, Zijie Zhao, Duo Tang, Wenzhuo Li, Ao Li, Qi Zong, Renhang Zhou, Xiaonan Hou, Mengfei Yao, Zhixiang Zhou

引用次数: 0

Melamine enhancing Cu-Fenton reaction for degradation of anthracyclines. 三聚氰胺促进铜-芬顿反应降解蒽环类化合物。

Journal of hazardous materials Pub Date : 2024-12-05 Epub Date: 2024-10-02 DOI: 10.1016/j.jhazmat.2024.136035

Yixuan Zhao, Jiahui Zhao, Shuqin Liu, Dunqing Wang, Jian Liu, Fei Zhang, Xiangshu Chen

{"title":"Melamine enhancing Cu-Fenton reaction for degradation of anthracyclines.","authors":"Yixuan Zhao, Jiahui Zhao, Shuqin Liu, Dunqing Wang, Jian Liu, Fei Zhang, Xiangshu Chen","doi":"10.1016/j.jhazmat.2024.136035","DOIUrl":"10.1016/j.jhazmat.2024.136035","url":null,"abstract":"Melamine (MA) enhanced Cu-Fenton process was developed for the degradation of anthracyclines. Taking daunorubicin (DNR) degradation as an example, we found that the initial first-order apparent constant of Cu2+/MA/H2O2 system with a molar ratio of 1:8 for Cu2+:MA was 5.2 times higher than that of conventional Cu2+/H2O2 system. The in-situ reductive coordination between Cu2+ and MA facilitated the generation and stabilization of Cu+ species, thereby accelerating the rate-limiting step of Cu2+/Cu+ conversion and maintaining high levels of Cu+ during the degradation process. Moreover, pre-synthesized Cu+-MA complexes (e.g., CM-250) further enhanced the efficiency of the Cu-Fenton reaction by increasing both the Cu+ proportion and MA chelation. The apparent activation energy for DNR degradation in CM-250 mediated Fenton reaction (15.9 kJ mol-1) was lower than that in systems involving Cu2+/MA (41.2 kJ mol-1) and Cu2+ (65.6 kJ mol-1). Enhanced generation of various reactive oxygen species (·OH,·O2-, and 1O2) was confirmed, with 1O2 playing a dominant role, significantly improving both degradation rate and mineralization degree for DNR. MA-enhanced Cu-Fenton process also offers a convenient alternative to effectively remove other anthracyclines and organic micropollutants, holding great promise for advancing advanced oxidation processes as well as practical large-scale degradation applications targeting multiple pollutants.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"480 ","pages":"136035"},"PeriodicalIF":0.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142373935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Copper-nickel-MOF/nickel foam catalysts grown in situ for efficient electrochemical nitrate reduction to ammonia. 原位生长的铜镍-MOF/镍泡沫催化剂，用于高效电化学硝酸盐还原成氨。

Journal of hazardous materials Pub Date : 2024-12-05 Epub Date: 2024-10-03 DOI: 10.1016/j.jhazmat.2024.136036

Chenxia Yang, Ying Tang, Qian Yang, Bo Wang, Xianghao Liu, Yuxiang Li, Weixia Yang, Kunxuan Zhao, Gang Wang, Zongyuan Wang, Feng Yu

{"title":"Copper-nickel-MOF/nickel foam catalysts grown in situ for efficient electrochemical nitrate reduction to ammonia.","authors":"Chenxia Yang, Ying Tang, Qian Yang, Bo Wang, Xianghao Liu, Yuxiang Li, Weixia Yang, Kunxuan Zhao, Gang Wang, Zongyuan Wang, Feng Yu","doi":"10.1016/j.jhazmat.2024.136036","DOIUrl":"10.1016/j.jhazmat.2024.136036","url":null,"abstract":"Reducing nitrate (NO3-) in an aqueous solution to ammonia under ambient conditions can provide a green and sustainable NH3-synthesis technology and mitigate global energy and pollution issues. In this work, a CuNi0.75-1,3,5-benzenetricarboxylic acid/nickel foam (CuNi0.75-MOF/NF) catalyst grown in situ was prepared via a one-pot method as an efficient cathode material for electrocatalytic nitrate reduction reaction (NO3RR). The CuNi0.75-MOF/NF catalyst exhibited excellent electrocatalytic NO3RR performance at -1.0 V versus a reversible hydrogen electrode, achieving an outstanding faradaic efficiency of 95.88 % and an NH3 yield of 51.78 mg h-1 cm-2. The 15N isotope labeling experiments confirmed that the sole source of N in the electrocatalytic NO3RR was the NO3- in the electrolyte. The reaction pathway for the electrocatalytic NO3RR was derived by in situ Fourier transform infrared spectroscopy and in situ differential electrochemical mass spectrometry. Density functional theory calculations revealed that the Ni element in the CuNi0.75-MOF/NF catalyst had excellent O-H activation ability and strong *H adsorption capacity. These *H species were transferred from the Ni sites to the *NO adsorption intermediates located on the Cu sites, providing a continuous supply of *H to Cu, thereby promoting the formation of *NOH intermediates and enhancing the hydrogenation process of the electrocatalytic NO3RR.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"480 ","pages":"136036"},"PeriodicalIF":0.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142376423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanistic insights into the pH-driven radical transformation of the Fe(II)/nCP in groundwater remediation. 对 pH 值驱动的 Fe(II)/nCP 在地下水修复中的自由基转化机理的深入研究。

Journal of hazardous materials Pub Date : 2024-12-05 Epub Date: 2024-11-13 DOI: 10.1016/j.jhazmat.2024.136334

Jinsong Chen, Hui Ma, Haoyu Luo, Shengyan Pu

{"title":"Mechanistic insights into the pH-driven radical transformation of the Fe(II)/nCP in groundwater remediation.","authors":"Jinsong Chen, Hui Ma, Haoyu Luo, Shengyan Pu","doi":"10.1016/j.jhazmat.2024.136334","DOIUrl":"10.1016/j.jhazmat.2024.136334","url":null,"abstract":"Calcium peroxide nanoparticles (nCP) as a versatile and safe solid H2O2 source, have attracted significant research interst for their application potential in groundwater remediation. Compared to the traditional Fenton system, the nCP-based Fenton-like system has a wider pH-working window for contaminants degradation. This results from the dominant radical transformation under different pH. Unlike the traditional Fenton system which is only effective in acid conditions with hydroxyl radical (•OH) as the main active species, the release of H2O2 and O2 from nCP provides multiple contaminants degradation pathways. In acidic environments, •OH and Fe(IV) predominate as the active species, facilitated by substantial H2O2 production which activates the Fenton reaction. In neutral or alkaline conditions, the production of H2O2 was dramatically decreased. While the O2 released from nCP can be catalyzed by Fe(II) to form superoxide radical (•O2-), which subsequently generate singlet oxygen (1O2). The formation pathway of •O2- was tracked by O18 isotope labeling experiment. The impact of the water matrix on radical generation in the Fe(II)/nCP Fenton-like system was also studied. This research deepens the understanding of the radical formation mechanisms in nCP-based Fenton-like system, offering insights to support their application in remediating contaminated groundwater.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"480 ","pages":"136334"},"PeriodicalIF":0.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142635227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phototransformation and photoreactivity of MPs-DOM in aqueous environment: Key role of MPs structure decoded by optical and molecular signatures. MPs-DOM 在水环境中的光转化和光活性：通过光学和分子特征解读 MPs 结构的关键作用。

Journal of hazardous materials Pub Date : 2024-12-05 Epub Date: 2024-10-31 DOI: 10.1016/j.jhazmat.2024.136331

Saisai Guo, Linan Liu, Lan Wang, Jingchun Tang

{"title":"Phototransformation and photoreactivity of MPs-DOM in aqueous environment: Key role of MPs structure decoded by optical and molecular signatures.","authors":"Saisai Guo, Linan Liu, Lan Wang, Jingchun Tang","doi":"10.1016/j.jhazmat.2024.136331","DOIUrl":"10.1016/j.jhazmat.2024.136331","url":null,"abstract":"The dissolved organic matter (DOM) derived from microplastics (MPs-DOM) can be one of the photoactive components in DOM. However, information on the properties and photoreactivity of MPs-DOM during phototransformation is limited. Here, we investigated the properties and photoreactivity of MPs-DOM from polyolefins (MPs-DOM-POs), MPs-DOM derived from benzene-containing polymers (MPs-DOM-BCPs), and Suwannee River natural organic matter (SR-NOM), during a 168-hour phototransformation. After phototransformation, all examined types of DOM exhibit a decrease in concentration and molecular weight. Notably, MPs-DOM-POs display increased aromaticity and saturation, while MPs-DOM-BCPs and SR-NOM show reduced aromaticity and saturation. MPs-DOM-POs present higher steady-state concentrations of •OH but much lower steady-state concentrations of 1O2 than those of MPs-DOM-BCPs. In comparison, MPs-DOM produce more •OH but less 1O2 than SR-NOM. This study proposes that the diversification of aliphatic C─H bonds (arylation and carbonylation) by reactive intermediates (especially •OH) is the main pathway for MPs-DOM-POs phototransformation for the first time. On the other hand, the cleavage on the aromatic carboxylic acids by reactive intermediates (especially 1O2) is the main mechanism for MPs-DOM-BCPs and SR-NOM phototransformation. Our findings provide new insights into the phototransformation and photoreactivity of MPs-DOM and help to understand the potential risks of MPs in aqueous environment.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"480 ","pages":"136331"},"PeriodicalIF":0.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First insight into the environmental fate of N-acetylated sulfonamides from wastewater disinfection to solar-irradiated receiving waters. 首次了解 N-乙酰化磺酰胺从废水消毒到太阳照射受纳水体的环境归宿。

Journal of hazardous materials Pub Date : 2024-12-05 Epub Date: 2024-10-16 DOI: 10.1016/j.jhazmat.2024.136172

Shuiqin Shi, Zhantu Ye, Jiayan Jiang, Junmei Yan, Xin Yu, Mingbao Feng

{"title":"First insight into the environmental fate of N-acetylated sulfonamides from wastewater disinfection to solar-irradiated receiving waters.","authors":"Shuiqin Shi, Zhantu Ye, Jiayan Jiang, Junmei Yan, Xin Yu, Mingbao Feng","doi":"10.1016/j.jhazmat.2024.136172","DOIUrl":"10.1016/j.jhazmat.2024.136172","url":null,"abstract":"The worldwide detection of emerging transformation products of organic micropollutants has raised accumulating concerns owing to their unknown environmental fate and undesired toxicity. This work first explored the reaction kinetics and mechanisms of the prevalent N-acetylated sulfonamides (N4-AcSAs, the typical sulfonamide metabolites) from wastewater disinfection to solar-irradiated receiving waters. The transformation scenarios included chlorination/bromination, photodegradation, and solar/chlorine treatment. The halogenations of two N4-AcSAs (N4-acetylated sulfadiazine, N4-AcSDZ; N4-acetylated sulfamethoxazole, N4-AcSMX) were pH-dependent at pH 5.0-8.0, and the reactions between the neutral forms of oxidants and anionic N4-AcSAs dominated the process. Furthermore, solar-based photolysis significantly eliminated N4-AcSAs in small water bodies with low dissolved organic carbon levels, while the indirect photolysis mediated by hydroxyl radicals and carbonate radicals contributed the most. The presence of chlorine residues in solar-irradiated wastewater effluents promoted the decay of N4-AcSAs, in which the generated hydroxyl radicals and ozone played a major role. Product analysis suggested the main transformation patterns of N4-AcSAs during the above scenarios included electrophilic attack, bond cleavage, SO2 extrusion, hydroxylation, and rearrangement. Multiple secondary products maintained higher persistence, mobility, and toxicity to aquatic organisms than N4-AcSAs. Overall, the natural and engineered transformations of such micropollutants underlined the necessity of including their degradation products in future chemical management and risk assessment.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"480 ","pages":"136172"},"PeriodicalIF":0.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142484208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the stereoselective bioactivity and biotoxicity of penthiopyrad in soil environment for efficacy improvement and hazard reduction. 评估土壤环境中戊硫磷的立体选择性生物活性和生物毒性，以提高药效和减少危害。

IF 11.3

Journal of hazardous materials Pub Date : 2024-12-05 Epub Date: 2024-11-12 DOI: 10.1016/j.jhazmat.2024.136476

Kuan Fang, Tong Liu, Guo Tian, Wei Sun, Xiangwei You, Xiuguo Wang

{"title":"Assessing the stereoselective bioactivity and biotoxicity of penthiopyrad in soil environment for efficacy improvement and hazard reduction.","authors":"Kuan Fang, Tong Liu, Guo Tian, Wei Sun, Xiangwei You, Xiuguo Wang","doi":"10.1016/j.jhazmat.2024.136476","DOIUrl":"10.1016/j.jhazmat.2024.136476","url":null,"abstract":"Penthiopyrad, a chiral pesticide, has been widely used in agricultural production. However, systematic evaluation of stereoselective bioactivity and biotoxicity of penthiopyrad in soil environment is insufficient. In this study, the stereoselective bioactivity of penthiopyrad against three soil-borne disease pathogens and its stereoselective biotoxicity to soil non-target organisms were investigated. The present results showed that the bioactivities of S-penthiopyrad were 546, 76 and 1.1-fold higher than those of R-penthiopyrad due to their different interaction modes with SDH in different target pathogens. S-penthiopyrad was more persistent in the soil environment and had stronger bioaccumulation than R-penthiopyrad. The accumulation of penthiopyrad in earthworms induced the response of detoxification system, resulting in the significant increases in the activity of detoxifying enzymes, such as GST, CarE, and CYP450. Additionally, both S-penthiopyrad and R-penthiopyrad induced cell apoptosis, intestinal damage and differentially expressed genes in earthworms, especially S-penthiopyrad. Furthermore, S-penthiopyrad has stronger binding capacity with COL6A and ACE proteins, while R-penthiopyrad has stronger binding capacity with CYP450 family proteins, which may be the main reason for the differences in biotoxicity between PEN enantiomers. Considering the differences in bioactivity and biotoxicity of penthiopyrad enantiomers, as well as the modes of action of pesticides on target and non-target organisms, S-penthiopyrad has greater potential for future development.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"480 ","pages":"136476"},"PeriodicalIF":11.3,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142635219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CuS enabled efficient Fenton-like oxidation of phenylarsonic acid and inorganic arsenic immobilization. CuS 实现了苯胂酸的高效芬顿式氧化和无机砷固定。

Journal of hazardous materials Pub Date : 2024-12-05 Epub Date: 2024-10-16 DOI: 10.1016/j.jhazmat.2024.136171

Wei Liu, Fengfeng Zhou, Huan Yang, Yunxiao Shi, Yaxin Qin, Hongwei Sun, Lizhi Zhang

{"title":"CuS enabled efficient Fenton-like oxidation of phenylarsonic acid and inorganic arsenic immobilization.","authors":"Wei Liu, Fengfeng Zhou, Huan Yang, Yunxiao Shi, Yaxin Qin, Hongwei Sun, Lizhi Zhang","doi":"10.1016/j.jhazmat.2024.136171","DOIUrl":"10.1016/j.jhazmat.2024.136171","url":null,"abstract":"Herein, copper sulfide (CuS) was introduced to the Fenton-like (Fe(III)/H2O2) system for the efficient removal of phenylarsonic acid (PAA). Results of reactive oxygen and Fe/Cu species showed that CuS preferentially reacted with Fe(III) and H2O2 to generate Cu(I) and superoxide anion (•O2-). These reductive species could efficiently promote the Fe(III)/Fe(II) and Cu(II)/Cu(I) cycles, and are beneficial to the sequential Fenton reaction to generate •OH. The organoic/inorganic arsenic species detected in the CuS/Fe(III)/H2O2 system confirmed that PAA was oxidized by •OH to hydroxylated organoarsenic and phenolic intermediates, which were further mineralized to oxalate and formic acid. Meanwhile, the inorganic As(III)/As(V) released during PAA degradation were efficiently immobilized by CuS. The PAA removal efficiency remained as high as 92.9 % after 5 cycles of the CuS-mediated Fenton-like process. These results demonstrate an innovative method for the treatment of organoarsenic-contaminated water, and provide new insights into the enhanced Fenton-like process utilizing sulfide minerals.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"480 ","pages":"136171"},"PeriodicalIF":0.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142484307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hot spots of resistance: Transit centers as breeding grounds for airborne ARG-carrying bacteriophages. 抗药性的热点：转运中心是空气中携带 ARG 的噬菌体的滋生地。

IF 11.3

Journal of hazardous materials Pub Date : 2024-12-05 Epub Date: 2024-10-16 DOI: 10.1016/j.jhazmat.2024.136165

Jing Zhang, Jiayu Shang, Beibei Liu, Dong Zhu, Qinfen Li, Li Yin, Okugbe Ebiotubo Ohore, Shaobai Wen, Changfeng Ding, Yican Zhang, Zhengfu Yue, Yukun Zou

{"title":"Hot spots of resistance: Transit centers as breeding grounds for airborne ARG-carrying bacteriophages.","authors":"Jing Zhang, Jiayu Shang, Beibei Liu, Dong Zhu, Qinfen Li, Li Yin, Okugbe Ebiotubo Ohore, Shaobai Wen, Changfeng Ding, Yican Zhang, Zhengfu Yue, Yukun Zou","doi":"10.1016/j.jhazmat.2024.136165","DOIUrl":"10.1016/j.jhazmat.2024.136165","url":null,"abstract":"The presence of pathogenic bacteria and antibiotic resistance genes (ARGs) in urban air poses a significant threat to public health. While prevailing research predominantly focuses on the airborne transmission of ARGs by bacteria, the potential influence of other vectors, such as bacteriophages, is often overlooked. This study aims to investigate the characteristics of phages and ARGs in aerosols originating from hospitals, public transit centers, wastewater treatment plants, and landfill sites. The average abundance of ARGs carried by phages in the public transit centers was 8.81 ppm, which was 2 to 3 times higher than that at the other three sites. Additionally, the abundance of ARGs across different risk levels at this site was also significantly higher than at the other three sites. The assembled phage communities bearing ARGs in public transit centers are chiefly governed by homogeneous selection processes, likely influenced by human movement. Furthermore, observations at public transit sites revealed that the average abundance ratio of virulent phages to their hosts was 1.01, and the correlation coefficient between their auxiliary metabolic genes and hosts' metabolic genes was 0.59, which were 20 times and 3 times higher, respectively, than those of temperate phages. This suggests that virulent phages may enhance their survival by altering host metabolism, thereby aiding the dispersion of ARGs and bacterial resistance. These revelations furnish fresh insights into phage-mediated ARG transmission, offering scientific substantiation for strategies aimed at preventing and controlling resistance within aerosols.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"480 ","pages":"136165"},"PeriodicalIF":11.3,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142484209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the variation mechanism of Zn isotope in polluted farmland soil. 受污染农田土壤中锌同位素的变化机制研究

Journal of hazardous materials Pub Date : 2024-11-05 Epub Date: 2024-08-18 DOI: 10.1016/j.jhazmat.2024.135561

Jing Kong, Fang Huang, Rongfei Wei, Xingchao Zhang, Guangxu Zhu, Qingjun Guo

{"title":"Study on the variation mechanism of Zn isotope in polluted farmland soil.","authors":"Jing Kong, Fang Huang, Rongfei Wei, Xingchao Zhang, Guangxu Zhu, Qingjun Guo","doi":"10.1016/j.jhazmat.2024.135561","DOIUrl":"10.1016/j.jhazmat.2024.135561","url":null,"abstract":"Zn isotope can help to clarify the migration, transformation and source contribution of Zn in farmland soil. However, the research on Zn isotope value of different end members in farmland soil is incomprehensive, and the variation of Zn isotope in farmland soil caused by different factors in different polluted areas is unclear, which hinders the usage of Zn isotope tracing method in farmland soil. Thus, a Pb-Zn mine polluted farmland in southwest China was selected as the research object and the end elements and farmland soil samples with different Zn contamination were systematically collected to analyse Zn content, fraction and isotopic composition. The effects of different end members and processes of eluviation, organic adsorption and inorganic adsorption on Zn isotopic composition in soil were analysed, and the relationship between these three processes and environmental variables was analysed to clarify the change mechanism. The results can enrich the fractionation mechanism of Zn isotopes, expand the application of Zn isotope in tracing the sources, and provide geochemical evidence for remediation of Zn pollution in farmland soil.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"479 ","pages":"135561"},"PeriodicalIF":0.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142157057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0