Environmental Science: Processes & Impacts最新文献

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Correction: Emerging pollutants in the Esmeraldas watershed in Ecuador: discharge and attenuation of emerging organic pollutants along the San Pedro-Guayllabamba-Esmeraldas rivers. 更正:厄瓜多尔埃斯梅拉达斯流域新出现的污染物:圣佩德罗-瓜伊拉班巴-埃斯梅拉达斯河流沿岸新出现的有机污染物的排放和衰减。
IF 4.3 3区 环境科学与生态学
Environmental Science: Processes & Impacts Pub Date : 2024-07-12 DOI: 10.1039/d4em90029d
A Voloshenko-Rossin, G Gasser, K Cohen, J Gun, L Cumbal-Flores, W Parra-Morales, F Sarabia, F Ojeda, O Lev
{"title":"Correction: Emerging pollutants in the Esmeraldas watershed in Ecuador: discharge and attenuation of emerging organic pollutants along the San Pedro-Guayllabamba-Esmeraldas rivers.","authors":"A Voloshenko-Rossin, G Gasser, K Cohen, J Gun, L Cumbal-Flores, W Parra-Morales, F Sarabia, F Ojeda, O Lev","doi":"10.1039/d4em90029d","DOIUrl":"https://doi.org/10.1039/d4em90029d","url":null,"abstract":"<p><p>Correction for 'Emerging pollutants in the Esmeraldas watershed in Ecuador: discharge and attenuation of emerging organic pollutants along the San Pedro-Guayllabamba-Esmeraldas rivers' by A. Voloshenko-Rossin <i>et al.</i>, <i>Environ. Sci.: Processes Impacts</i>, 2015, <b>17</b>, 41-53, https://doi.org/10.1039/C4EM00394B.</p>","PeriodicalId":74,"journal":{"name":"Environmental Science: Processes & Impacts","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Effects of Copper on the Chemical Kinetics and Brown Carbon Formation in the Aqueous ∙OH oxidation of Phenolic Compounds 铜对酚类化合物水溶液 ∙OH 氧化过程中的化学动力学和褐碳形成的影响
IF 5.5 3区 环境科学与生态学
Environmental Science: Processes & Impacts Pub Date : 2024-07-10 DOI: 10.1039/d4em00191e
Junwei Yang, Tianye Zhou, Yuting Lyu, Beatrix Rosette Go Mabato, Jason Chun-Ho Lam, Chak Keung Chan, Theodora Nah
{"title":"Effects of Copper on the Chemical Kinetics and Brown Carbon Formation in the Aqueous ∙OH oxidation of Phenolic Compounds","authors":"Junwei Yang, Tianye Zhou, Yuting Lyu, Beatrix Rosette Go Mabato, Jason Chun-Ho Lam, Chak Keung Chan, Theodora Nah","doi":"10.1039/d4em00191e","DOIUrl":"https://doi.org/10.1039/d4em00191e","url":null,"abstract":"Many phenolic compounds (PhCs) in biomass burning and fossil fuel combustion emissions can partition into atmospheric aqueous phases and undergo reactions to form secondary organic aerosols (SOA) and brown carbon (BrC). Redox-active transition metals, Fe and Cu, are ubiquitous species in atmospheric aqueous phases known to participate in Fenton/Fenton-like chemistry to be a source of ∙OH. However, even though the concentrations of water-soluble Cu are close to that of water-soluble Fe in atmospheric aqueous phases in some areas, unlike Fe, the effects Cu have on SOA and BrC formation in atmospheric aqueous phases have scarcely been studied and remains not well-understood. We investigated the effects of Cu(II) on PhC reaction rates and BrC formation during the aqueous oxidation of four PhCs (guaiacol, catechol, syringol, and vanillin) by ∙OH generated from Fenton-like chemistry at different pH conditions. While the PhCs reacted when both H2O2 and Cu(II) were present in the absence (i.e., dark oxidation) and presence (i.e., photooxidation) of light, the reaction rates were at least one order of magnitude higher during photooxidation. Higher PhC reaction rates were measured at higher pH during both dark oxidation and photooxidation as a result of higher ∙OH concentrations produced by Fenton-like chemistry. Only water-soluble BrC were formed during dark oxidation and photooxidation when Cu(II) was present. Mass absorption coefficients (103 to 104 cm2 g–1) comparable to those of biomass burning BrC were measured during dark oxidation and photooxidation when Cu(II) was present. Light absorption was enhanced at higher pH during dark oxidation and photooxidation, which indicated that higher quantities and/or more absorbing BrC chromophores were formed at higher pH. The effects that Cu(II) had on the PhC reaction rates and the composition of SOA and BrC formed depended on the PhC base structure (i.e., benzenediol vs. methoxyphenol). Overall, these results show how aqueous reactions involving Cu(II), H2O2, and PhCs can be an efficient source of daytime and nighttime water-soluble BrC and SOA, which can have significant implications for how the atmospheric fates of PhCs are modeled for areas with substantial concentrations of water-soluble Cu in highly to moderately acidic cloud/fog water and aqueous aerosols.","PeriodicalId":74,"journal":{"name":"Environmental Science: Processes & Impacts","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Outstanding Reviewers for Environmental Science: Processes & Impacts in 2023. 环境科学》杰出评审员:2023 年的过程与影响。
IF 4.3 3区 环境科学与生态学
Environmental Science: Processes & Impacts Pub Date : 2024-07-10 DOI: 10.1039/d4em90024c
{"title":"Outstanding Reviewers for <i>Environmental Science: Processes & Impacts</i> in 2023.","authors":"","doi":"10.1039/d4em90024c","DOIUrl":"https://doi.org/10.1039/d4em90024c","url":null,"abstract":"<p><p>We would like to take this opportunity to thank all of <i>Environmental Science: Processes & Impacts</i>' reviewers for helping to preserve quality and integrity in chemical science literature. We would also like to highlight the Outstanding Reviewers for <i>Environmental Science: Processes & Impacts</i> in 2023.</p>","PeriodicalId":74,"journal":{"name":"Environmental Science: Processes & Impacts","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Assessment of toxic effects of thallium on the earthworm Eisenia fetida using the biomarker response index. 利用生物标记反应指数评估铊对蚯蚓的毒性影响
IF 4.3 3区 环境科学与生态学
Environmental Science: Processes & Impacts Pub Date : 2024-07-09 DOI: 10.1039/d4em00253a
Shuai Li, Zhifeng Wang, Nan Gao, Xiaoyu Niu, Benteng Zhu, Lusheng Xu, Weina Xue
{"title":"Assessment of toxic effects of thallium on the earthworm <i>Eisenia fetida</i> using the biomarker response index.","authors":"Shuai Li, Zhifeng Wang, Nan Gao, Xiaoyu Niu, Benteng Zhu, Lusheng Xu, Weina Xue","doi":"10.1039/d4em00253a","DOIUrl":"https://doi.org/10.1039/d4em00253a","url":null,"abstract":"<p><p>Thallium (Tl), though not essential for biological systems, is widely used in industrial activities, resulting in soil pollution and adverse effects on soil biota. Systematic toxicological studies on Tl, especially concerning soil organisms, are relatively rare. This research evaluates the toxic effects of Tl on earthworms by measuring oxidative stress biomarkers, such as superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), malondialdehyde (MDA), and 8-hydroxydeoxyguanosine (8-OHdG), and by assessing the expression of functional genes, such as <i>heat shock protein 70</i> (<i>Hsp70</i>), <i>metallothionein</i> (<i>MT</i>), and <i>annetocin</i> (<i>ANN</i>). Additionally, this study employs the Biomarker Response Index (BRI) and two-way ANOVA to comprehensively assess the cumulative toxicity of Tl in earthworms. The findings indicate that Tl exposure significantly exacerbates oxidative stress and cellular damage in earthworms, particularly under conditions of high concentration and prolonged exposure. BRI results demonstrate a continuous decline in the physiological state of earthworms with increasing Tl concentration and exposure duration. Two-way ANOVA reveals significant dose-responsive increases in SOD and CAT activities, as well as in <i>ANN</i> gene expression. Apart from GST activity, other biomarkers significantly increased over time, and the changes in biomarkers such as SOD, CAT, MDA, and 8-OHdG were significantly influenced by dose and time. LSD <i>post hoc</i> tests show significant effects of dose, time, and their interactions on all biomarkers except for GST. These findings are valuable for gaining a deeper understanding of the ecological risks of Tl in soil environments and its potential threats to soil biota, aiding in the management of ecological risks associated with Tl-contaminated soils.</p>","PeriodicalId":74,"journal":{"name":"Environmental Science: Processes & Impacts","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141557397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Emerging investigator series: Preferential adsorption and coprecipitation of permafrost organic matter with poorly crystalline iron minerals 新晋研究人员系列:永久冻土有机物与弱结晶铁矿物的优先吸附和共沉淀作用
IF 5.5 3区 环境科学与生态学
Environmental Science: Processes & Impacts Pub Date : 2024-07-09 DOI: 10.1039/d4em00241e
Eva Voggenreiter, Philippe Schmitt-Kopplin, Laurel ThomasArrigo, Casey Bryce, Andreas Kappler, Prachi Joshi
{"title":"Emerging investigator series: Preferential adsorption and coprecipitation of permafrost organic matter with poorly crystalline iron minerals","authors":"Eva Voggenreiter, Philippe Schmitt-Kopplin, Laurel ThomasArrigo, Casey Bryce, Andreas Kappler, Prachi Joshi","doi":"10.1039/d4em00241e","DOIUrl":"https://doi.org/10.1039/d4em00241e","url":null,"abstract":"Future permafrost thaw will likely lead to substantial release of greenhouse gases due to thawing of previously unavailable organic carbon (OC). Accurate predictions of this release are limited by poor knowledge of the bioavailabity of mobilized OC during thaw. Organic carbon bioavailability decreases due to adsorption to, or coprecipitation with, poorly crystalline ferric iron (Fe(III)) (oxyhydr)oxide minerals but the maximum binding extent and binding selectivity of permafrost OC to these minerals is unknown. We therefore utilized water-extractable organic matter (WEOM) from soils across a permafrost thaw gradient to quantify adsorption and coprecipitation processes with poorly crystalline Fe(III) (oxyhydr)oxides. We found that the maximum adsorption capacity of WEOM from intact and partly thawed permafrost soils was similar (204 and 226 mg C g<small><sup>-1</sup></small> ferrihydrite, respectively) but decreased to 81 mg C g<small><sup>-1</sup></small> ferrihydrite for WEOM from the fully thawed site. In comparison, coprecipitation of WEOM from intact and partly thawed soils with Fe immobilized up to 925 and 1532 mg C g<small><sup>-1</sup></small> Fe respectively due to formation of precipitated Fe(III)-OC phases. Analysis of the OC composition before and after adsorption/coprecipitation revealed that high molecular weight, oxygen-rich, carboxylic- and aromatic-rich OC was preferentially bound to Fe(III) minerals relative to low molecular weight, aliphatic-rich compounds which may be more bioavailable. This selective binding effect was stronger after adsorption than coprecipitation. Our results suggest that OC binding by Fe(III) (oxyhydr)oxides sharply decreases under fully thawed conditions and that small, aliphatic OC molecules that may be readily bioavailable are less protected across all thaw stages.","PeriodicalId":74,"journal":{"name":"Environmental Science: Processes & Impacts","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141573388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Porphyrin metabolism and carbon fixation response of Skeletonema costatum at different growth phases to mixed emerging PFASs at environmental concentrations. 不同生长阶段的 Skeletonema costatum 对环境浓度下新出现的混合 PFAS 的卟啉代谢和碳固定反应。
IF 4.3 3区 环境科学与生态学
Environmental Science: Processes & Impacts Pub Date : 2024-07-08 DOI: 10.1039/d4em00137k
Xiaofeng Li, Yongzheng Ma, Ying Zhang, Xiaohan Zhang, Hongyu Li, Yueling Sun, Zhiguang Niu
{"title":"Porphyrin metabolism and carbon fixation response of <i>Skeletonema costatum</i> at different growth phases to mixed emerging PFASs at environmental concentrations.","authors":"Xiaofeng Li, Yongzheng Ma, Ying Zhang, Xiaohan Zhang, Hongyu Li, Yueling Sun, Zhiguang Niu","doi":"10.1039/d4em00137k","DOIUrl":"https://doi.org/10.1039/d4em00137k","url":null,"abstract":"<p><p>Per- and polyfluoroalkyl substances (PFASs), especially as emerging compounds, have been widely detected in coastal seawater. However, the awareness of the interaction between PFASs at environmental concentrations and marine diatoms is still limited. In this study, <i>Skeletonema costatum</i> was exposed to three co-existing PFASs, namely hexafluoropropylene oxide dimer acid (HFPO-DA), 6 : 2 chlorinated polyfluorinated ether sulfonate (Cl-PFAES), and perfluoroethylcyclohexane sulfonate (PFECHS) (15-300 ng L<sup>-1</sup> in total), for 14 days. In the 300 ng L<sup>-1</sup> test group, the significant down-regulation of chlorophyllide a in porphyrin metabolism, light-harvesting capacity and carbon fixation were the main inhibitory mechanisms of photosynthesis by emerging PFASs at the 14th day compared to the 8th day, which indicated that they may have a shading effect on <i>S. costatum</i>. Additionally, mixed PFASs could also activate nicotinamide adenine dinucleotide phosphate (NADPH) oxidase by up-regulating gene <i>gp91</i> and down-regulating genes <i>CaM4</i> and <i>NDPK2</i> to generate excessive ROS. This resulted in a decrease in the algal biomass, which would further weaken the primary productivity of <i>S. costatum</i>. Our findings illustrated that mixed emerging PFASs at environmental concentrations may interfere with the carbon balance of marine diatoms.</p>","PeriodicalId":74,"journal":{"name":"Environmental Science: Processes & Impacts","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141553641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Photo-aging of brominated epoxy microplastics in water under simulated solar irradiation. 模拟太阳辐照下水中溴化环氧微塑料的光老化。
IF 4.3 3区 环境科学与生态学
Environmental Science: Processes & Impacts Pub Date : 2024-07-08 DOI: 10.1039/d4em00208c
Xuefeng Hu, Hao Xie, Yujie Li, Chao Wang
{"title":"Photo-aging of brominated epoxy microplastics in water under simulated solar irradiation.","authors":"Xuefeng Hu, Hao Xie, Yujie Li, Chao Wang","doi":"10.1039/d4em00208c","DOIUrl":"https://doi.org/10.1039/d4em00208c","url":null,"abstract":"<p><p>Microplastics have become an increasingly concerning pollutant in aquatic environments, and photodegradation is their main degradation pathway in water. Gaining insight into the transformation process of microplastics will enhance our understanding of their behavior and destiny in natural environments. This paper studied the aging process of BER microplastics in aquatic environments under simulated sunlight and investigated the changes in the physical and chemical properties of microplastics and the changes in the leachate. During the photodegradation process, BER-MPs underwent extensive oxidation and reduction in particle size, and the originally smooth surface developed numerous voids, accompanied by yellowing. Introduction of O atoms in the molecular chains increased their hydrophilicity, resulting in the polymer chains breaking away from the plastic particles and dissolving in water. Also, once BER was excited by light, environmentally persistent free radicals are produced on its surface. Moreover, the breaking of C-Br bonds occurred during the photodegradation process of BER-MPs, which suggested that tetrabromobisphenol A would be transformed during the photoaging process of BER even if it was covalently bound to BER.</p>","PeriodicalId":74,"journal":{"name":"Environmental Science: Processes & Impacts","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141553640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Criteria for distinguishing heterogeneous from homogeneous conditions for aromatic diisocyanates in water. 区分芳香族二异氰酸酯在水中的异质和均质条件的标准。
IF 4.3 3区 环境科学与生态学
Environmental Science: Processes & Impacts Pub Date : 2024-07-04 DOI: 10.1039/d4em00200h
Patrick M Plehiers, Hans-Georg Pirkl, Lauren Ward, Christian Bögi
{"title":"Criteria for distinguishing heterogeneous from homogeneous conditions for aromatic diisocyanates in water.","authors":"Patrick M Plehiers, Hans-Georg Pirkl, Lauren Ward, Christian Bögi","doi":"10.1039/d4em00200h","DOIUrl":"https://doi.org/10.1039/d4em00200h","url":null,"abstract":"<p><p>Environmental fate and toxicity testing typically requires knowledge of the water solubility of the test substances. Determining the solubility of aromatic diisocyanates in water poses great challenges because of their hydrophobic nature and water-reactivity. The reactive dissolution process is dynamic and the establishment of a steady-state equilibrium cannot readily be observed. In preparation of experimental work, computer simulation was used to derive and evaluate criteria that enable distinguishing homogeneous (<i>i.e.</i>, substances would be fully dissolved in water) from heterogeneous (<i>i.e.</i>, a separate organic phase would be present) conditions. The simulation utilized available kinetic information and models representing the main physical and chemical processes taking place. It was found that the transition to heterogeneous conditions (<i>i.e.</i>, the exceedance of the solubility limit with increasing loading) can be identified by observing either a rapid decline in ultimate yield of the diamine hydrolysis product from near-stoichiometric to much lower values, or a decrease in rate of formation of the diamine hydrolysis product relative to its ultimate yield. The latter criterion is expected to be the more powerful indicator. These criteria can be used in future work to define and interpret an experimental program for determining solubility limits for aromatic diisocyanates or other poorly-soluble, water-reactive substances.</p>","PeriodicalId":74,"journal":{"name":"Environmental Science: Processes & Impacts","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141496394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
A CFD Study on the Effect of Portable Air Cleaner Placement on Airborne Infection Control in a Classroom 关于便携式空气净化器放置位置对教室空气传播感染控制影响的 CFD 研究
IF 5.5 3区 环境科学与生态学
Environmental Science: Processes & Impacts Pub Date : 2024-07-04 DOI: 10.1039/d4em00114a
Gen Pei, Parham Azimi, Donghyun Rim, Joseph Allen
{"title":"A CFD Study on the Effect of Portable Air Cleaner Placement on Airborne Infection Control in a Classroom","authors":"Gen Pei, Parham Azimi, Donghyun Rim, Joseph Allen","doi":"10.1039/d4em00114a","DOIUrl":"https://doi.org/10.1039/d4em00114a","url":null,"abstract":"The utilization of portable air cleaners (PACs) is a recommended supplemental approach to help remove airborne pathogens and mitigate disease transmission in learning environments. To improve PAC effectiveness, science-based information is needed to optimize their implementation strategies such as the deployment location, height, and number of PACs. In this study, we developed a Computational Fluid Dynamics (CFD) model to assess how PACs perform in occupied classrooms equipped with displacement and mixing ventilation systems. The results show that PACs with a flow rate of 2.6 hr-1 reduce the mean aerosol intake of all students by up to 66 %. A key benefit of using PACs is to facilitate air mixing and movement in indoor environments with inadequate ventilation, thereby effectively reducing high aerosol concentrations near the infector. Furthermore, our results highlight the impact of PAC location on its performance. PACs achieve the best effectiveness when placed closed to the infector (within a distance &lt; 3 m). In the absence of knowing who is infected, deploying PAC at the center of the room is recommended. Moreover, adjusting PAC flow discharge height to the breathing height of occupants (e.g., 0.9-1.2 m for seated people) can enhance their effectiveness in spaces with poor air mixing.","PeriodicalId":74,"journal":{"name":"Environmental Science: Processes & Impacts","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141551511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
New insight into the spatiotemporal distribution and ecological risk assessment of endocrine-disrupting chemicals in the Minjiang and Tuojiang rivers: perspective of watershed landscape patterns. 岷江和沱江中干扰内分泌的化学物质时空分布和生态风险评估的新见解:流域景观模式的视角。
IF 4.3 3区 环境科学与生态学
Environmental Science: Processes & Impacts Pub Date : 2024-07-03 DOI: 10.1039/d4em00052h
Weike Zhao, Peilin Li, Bo Yang
{"title":"New insight into the spatiotemporal distribution and ecological risk assessment of endocrine-disrupting chemicals in the Minjiang and Tuojiang rivers: perspective of watershed landscape patterns.","authors":"Weike Zhao, Peilin Li, Bo Yang","doi":"10.1039/d4em00052h","DOIUrl":"https://doi.org/10.1039/d4em00052h","url":null,"abstract":"<p><p>This study evaluated the pollution characteristics, spatiotemporal distribution, and ecological risks of eight endocrine-disrupting chemicals (EDCs) in the Minjiang and Tuojiang rivers. Utilizing 3S technology (ArcGIS, remote sensing, GPS) and Fragstats, the research calculated eight landscape pattern indices related to land use types along the Minjiang river and established correlations between landscape factors and EDC distribution through stepwise multiple regression. The results indicated that bisphenol A (BPA) and nonylphenol (NP) were the most concerning EDCs, with detection frequencies of 97-100% and peak concentrations up to 63.35 ng L<sup>-1</sup>, primarily located in the middle and lower reaches of the Minjiang river and the upper reaches of the Tuojiang river. There was a significant correlation between the spatial distribution of pollutants and landscape patterns, where increased fragmentation, a higher number of patches, and complex patch shapes within a 10-kilometer buffer zone were associated with elevated levels of river pollution. By integrating four classical mathematical models to fit curves for acute and chronic toxicity data of BPA and NP, the findings suggested that BPA posed a higher ecological risk. This interdisciplinary research provided essential theoretical insights for investigating river pollution and its influencing factors, offering a new perspective on simultaneous river pollution control, urban functional zoning, and adjustment of watershed landscape spatial patterns from an urban planning standpoint.</p>","PeriodicalId":74,"journal":{"name":"Environmental Science: Processes & Impacts","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141490042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
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