环境科学与生态学最新文献

{"title":"Improving groundwater vulnerability assessment using machine learning.","authors":"Juanjuan Fu, X Chris Le","doi":"10.1016/j.jes.2024.12.024","DOIUrl":"https://doi.org/10.1016/j.jes.2024.12.024","url":null,"abstract":"","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"6-9"},"PeriodicalIF":5.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research progress on environmental behavior of arsenic in Qinghai-Tibet Plateau soil.","authors":"Xitong Li, Chuangchuang Zhang, Aofan Wang, Tieliang Zhang, Zeying He, Yujie Zhao, Wenjing Liu, Qiwen Zhou","doi":"10.1016/j.jes.2024.08.021","DOIUrl":"https://doi.org/10.1016/j.jes.2024.08.021","url":null,"abstract":"<p><p>The Qinghai-Tibet Plateau, with its high altitude and cold climate, is one of the most fragile ecological environments in China and is distinguished by its naturally elevated arsenic (As) levels in the soil, largely due to its rich mineral and geothermal resources. This review provides a comprehensive analysis of As content, focusing on its distribution, environmental migration, and transformation behavior across the plateau. The review further evaluates the distribution of As in different functional areas, revealing that geothermal fields (107.2 mg/kg), mining areas (53.8 mg/kg), and croplands (39.3 mg/kg) have the highest As concentrations, followed by river and lake sediments and adjacent areas (33.1 mg/kg). These elevated levels are primarily attributed to the presence of As-rich minerals, such as arsenopyrite and pyrite. Additionally, human activities, including mining and geothermal energy production, exacerbate the release of As into the environment. The review also highlights the role of local microorganisms, particularly those from the phyla Proteobacteria and Actinobacteria, which possess As metabolic genes that facilitate As translocation. Given the unique climatic conditions of the plateau, conventional methods for As control may not be fully effective. However, the review identifies promising remediation strategies that are environmentally adaptable, such as the use of local microorganisms, specific adsorbents, and integrated technologies, which offer potential solutions for managing and utilizing As-contaminated soils on the plateau.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"237-250"},"PeriodicalIF":5.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shining a light on environmental science: Recent advances in SERS technology for rapid detection of persistent toxic substances.","authors":"Zhenli Sun, Xunlong Ji, Shaoyu Lu, Jingjing Du","doi":"10.1016/j.jes.2024.08.022","DOIUrl":"https://doi.org/10.1016/j.jes.2024.08.022","url":null,"abstract":"<p><p>Persistent toxic substances (PTS) represent a paramount environmental issue in the 21st century. Understanding the concentrations and forms of PTS in the environment is crucial for accurately assessing their environmental health impacts. This article presents a concise overview of the components of PTS, pertinent environmental regulations, and conventional detection methodologies. Additionally, we offer an in-depth review of the principles, development, and practical applications of surface-enhanced Raman scattering (SERS) in environmental monitoring, emphasizing the advancements in detecting trace amounts of PTS in complex environmental matrices. Recent progress in enhancing SERS sensitivity, improving selectivity, and practical implementations are detailed, showcasing innovative materials and methods. Integrating SERS with advanced algorithms are highlighted as pivotal areas for future research.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"251-263"},"PeriodicalIF":5.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Arsenic speciation in freshwater fish using high performance liquid chromatography and inductively coupled plasma mass spectrometry.","authors":"Chester Lau, Xiufen Lu, Karen S Hoy, Tetiana Davydiuk, Jennifer A Graydon, Megan Reichert, X Chris Le","doi":"10.1016/j.jes.2024.12.010","DOIUrl":"https://doi.org/10.1016/j.jes.2024.12.010","url":null,"abstract":"<p><p>Arsenic speciation in freshwater fish is crucial for providing meaningful consumption guidelines that allow the public to make informed decisions regarding its consumption. While marine fish have attracted much research interest due to their higher arsenic content, research on freshwater fish is limited due to the challenges in quantifying and identifying arsenic species present at trace levels. We describe here a sensitive method and its application to the quantification of arsenic species in freshwater fish. Arsenic species from fish tissues were extracted using a methanol/water mixture (1:1 vol. ratio) and ultrasound sonication. Anion-exchange high-performance liquid chromatography (HPLC) enabled separation of arsenobetaine (AsB), inorganic arsenite (iAs^III), dimethylarsinic acid (DMA), monomethylarsonic acid (MMA), inorganic arsenate (iAs^V), and three new arsenic species. Inductively coupled plasma mass spectrometry (ICPMS) provided highly sensitive and specific detection of arsenic. A limit of detection of 0.25 µg/kg (wet weight fish tissue) was achieved for the five target arsenic species: AsB, iAs^III, DMA, MMA, and iAs^V. A series of experiments were conducted to ensure the accuracy and validity of the analytical method. The method was successfully applied to the determination of arsenic species in lake whitefish, northern pike, and walleye, with AsB, DMA, and iAs^V being frequently detected. Three new arsenic species were detected, but their chromatographic retention times did not match with those of any available arsenic standards. Future research is necessary to elucidate the identity of these new arsenic species detected in freshwater fish.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"302-315"},"PeriodicalIF":5.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of spring runoff on 2,6-dichloro-1,4-benzoquinone formation during water treatment.","authors":"K N Minh Chau, Nicholas J P Wawryk, Qiming Shen, Caley B Craven, Kristin Carroll, Xing-Fang Li","doi":"10.1016/j.jes.2024.06.012","DOIUrl":"https://doi.org/10.1016/j.jes.2024.06.012","url":null,"abstract":"<p><p>This study investigated the impacts of spring runoff on the formation of halobenzoquinones (HBQs) and their correlation with common water quality parameters (WQPs) and aromatic amino acids (AAs) in source water. Source water and treated water samples were collected at two drinking water treatment plants in 2021, 2022, and 2023. HBQs and aromatic AAs were analyzed using solid phase extraction with high performance liquid chromatography-tandem mass spectrometry methods. The only HBQs detected in treated water were 2,6-dichloro-1,4-benzoquinone (DCBQ) and hydroxy‑DCBQ (OH-DCBQ). The concentration of DCBQ was 3-4 times higher during spring runoff events than during non-spring-runoff periods, suggesting the impact of spring runoff on the formation of DCBQ. The DCBQ concentrations in finished water positively correlated with the color, dissolved organic carbon, total organic nitrogen, and specific ultraviolet absorbance WQPs of source water in 2021 and 2022. The temporal trend of the total aromatic AAs determined in source water was strongly and positively correlated to DCBQ in finished water. Finally, there was a significant positive correlation between the concentration of DCBQ determined immediately following the addition of chlorine and the presence of its transformation product, OH-DCBQ, in finished water. The results also showed that powdered activated carbon can remove some of the HBQ precursors in the source water to reduce DCBQ formation. This study demonstrated that WQPs and aromatic AAs are useful indicators for the removal of precursors to reduce HBQ formation during drinking water treatment.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"182-190"},"PeriodicalIF":5.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Arsenic speciation in more than 1600 freshwater fish samples from fifty-three waterbodies in Alberta, Canada.","authors":"Chester Lau, Xiufen Lu, Xiaojian Chen, Karen S Hoy, Tetiana Davydiuk, Jennifer A Graydon, Megan Reichert, Adrienne LeBlanc, Caitlyn Donadt, Gian Jhangri, X Chris Le","doi":"10.1016/j.jes.2024.12.009","DOIUrl":"https://doi.org/10.1016/j.jes.2024.12.009","url":null,"abstract":"<p><p>We report here arsenic speciation in 1643 freshwater fish samples, representing 14 common fish species from 53 waterbodies in Alberta, Canada. Arsenic species were extracted from fish muscle tissue. Arsenic species in the extracts were separated using anion-exchange high-performance liquid chromatography (HPLC) and quantified using inductively coupled plasma mass spectrometry (ICPMS). The total arsenic concentrations in fish ranged from 2.8 to 1200 µg/kg (in wet weight of sample) (mean 71 ± 101 µg/kg), which are all below the 2000 µg/kg (wet weight) maximum allowable total arsenic in fish, recommended by the Ontario Ministry of the Environment. In 99.7%, or 1638 of all 1643 freshwater fish samples analyzed, arsenobetaine (AsB) was detectable, with concentrations higher than the method detection limit of 0.25 µg/kg (wet weight). Dimethylarsinic acid (DMA) was detectable (concentration >0.25 µg/kg) in 92.1%, or 1514 of the 1643 freshwater fish samples. Inorganic arsenate (iAs^V) was detectable (>0.25 µg/kg) in 1119 fish (i.e., 68.1% of 1643 samples). Monomethylarsonic acid (MMA) was detectable (>0.25 µg/kg) in 418 fish (25.4% of 1643 samples). The concentrations of arsenic species in the 1643 fish samples varied by as much as three orders of magnitude, ranging from below the method detection limit of 0.25 µg/kg to the maximum concentrations of 380 µg/kg for AsB, 150 µg/kg for DMA, 70 µg/kg for iAs^V, and 51 µg/kg for MMA. AsB made up 46.1% ± 26.2% of total arsenic species. Arsenic speciation patterns varied between lake whitefish, northern pike, and walleye, the three most common types of fish analyzed. The relative proportion of DMA in northern pike was larger than in lake whitefish and walleye, and conversely, the relative proportion of iAs^V was lower in northern pike. Seven unknown arsenic species were detected, and their chromatographic retention time did not match with those of available arsenic standards. At least one unknown arsenic species was detected in 33.4%, or 549 of 1643 freshwater fish samples. The concentrations of unknown arsenic species were as high as 61 µg/kg. Future research is necessary to identify unknown arsenic species and to determine contributing factors to the observed arsenic species patterns and concentrations.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"289-301"},"PeriodicalIF":5.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contamination and ecological risk of heavy metals in sediments of urban rivers in a typical economic development zone, southern China.","authors":"Xiaohui Wu, Kaixiong Yang, Jinna Lu, Bolin Li, Ye Li, Yaqiu Zhang, Li Ye","doi":"10.1016/j.jes.2024.09.006","DOIUrl":"https://doi.org/10.1016/j.jes.2024.09.006","url":null,"abstract":"<p><p>Urban rivers are one of the main water sources for local residents. However, the rapid industrialization and urbanization caused serious heavy metals pollution in urban rivers, which posed harmful impact on human health and ecosystem. In this study, 134 sediment samples were collected from urban rivers in a typical Economic and Technological Development Zone (ETDZ) to evaluate the contamination status, ecological risk, biotoxicity, and potential source of 8 heavy metals including arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), plumbum (Pb), and zinc (Zn). Results showed that the average concentrations of all 8 metals exceeded their corresponding background values and followed the trend: Cr (248.67 mg/kg) > Pb (123.58 mg/kg) > Zn (67.06 mg/kg) > Ni (47.19 mg/kg) > Cu (27.40 mg/kg) > As (16.15 mg/kg) > Cd (0.62 mg/kg) > Hg (0.21 mg/kg). A high contamination and accumulation tendency of Cd and Cr were found in the sediments. Moreover, Cd and Hg were the main contributors of ecological risk, and posed moderate to high risk. In terms of biotoxicity, all the sediment samples were harmful to benthic organisms. Two possible pollution sources of heavy metals were identified: one is a combined source of industrial and traffic pollution dominated by Cr and Pd, the other is an industrial pollution source consisting of six heavy metals (Ni, Zn, Cd, Hg, As, and Cu). This study provides insights into heavy metals pollution management and risk control in the ETDZ and similar urban rivers worldwide due to intense industrialization.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"264-274"},"PeriodicalIF":5.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long term substantial impacts of historic Chlor-Alkali production as a newly recognized source of polyhalogenated carbazoles in aquatic environments.","authors":"Zichun Huang, Guorui Liu, Roland Weber, Jerzy Falandysz, Yong Liang, Pu Wang, Lili Yang, Minghui Zheng","doi":"10.1016/j.jes.2024.06.014","DOIUrl":"https://doi.org/10.1016/j.jes.2024.06.014","url":null,"abstract":"<p><p>Bottom sediments of the North American Great Lakes are characterized by a high loading (over 3,000 tonnes) of polyhalogenated carbazoles (PHCZs). The origin of this environmental contaminant loading is unclear. Here, we first examined PHCZs levels and profiles in sediment, lotus, and fish from the Ya-Er Lake (China) that has been under the influence of an obsolete chlor-alkali facility for forty years and discovered substantial PHCZs contamination. Among the PHCZs determined, 3,6-dichlorocarbazole (36-CCZ) and 3-chlorocarbazole (3-CCZ) were the most frequently detected. Sediments from backfilled land exhibited Σ₁₁PHCZs at median concentration of 973 ng/g (dry weight), suggesting the chlor-alkali industry as an important source. Even after 20 years of dredging treatment, the concentration of Σ₁₁PHCZs in the sediment of the oxidation ponds (median = 41.1 ng/g) remained substantially higher than in other areas globally. Furthermore, the concentration of Σ₁₁PHCZs was found to be higher in surface sediments (median) at 66.7 ng/g if compared to middle (14.1 ng/g) and lower layers (18.2 ng/g), indicating the potential availability of PHCZs from surface sediments to aquatic plants and animals. Notably, this study detected PHCZs in both fish (26.3 ng/g lipid weight) and lotus (14.5 ng/g dry weight), with significant enrichment of 3-monobromocarbazole (3-BCZ) observed in both lotus root systems (bio-soil accumulation factor, BSAF_root = 5.04) and fish muscle (BSAF_fish = 3.04).</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"191-201"},"PeriodicalIF":5.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental studies of priority persistent contaminants: A special issue dedicated to Professor Chuanyong Jing.","authors":"Emma Jing, Li Yan, Guibin Jiang, X Chris Le","doi":"10.1016/j.jes.2024.12.026","DOIUrl":"https://doi.org/10.1016/j.jes.2024.12.026","url":null,"abstract":"","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"1-5"},"PeriodicalIF":5.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Light-dependent Br-org production in terrestrial plants under acetaminophen stress and the bromination mechanisms mediated by photosystem.","authors":"Min Dong, Kai Zheng, Zhonglan Shen, Chunguang Liu","doi":"10.1016/j.jes.2024.10.023","DOIUrl":"https://doi.org/10.1016/j.jes.2024.10.023","url":null,"abstract":"<p><p>Due to the endocrine toxicity, neurotoxic, and reproductive toxicity to organisms, the sources and risks of brominated organic pollutants have attracted widespread attention. However, knowledge gaps remain in the bromination processes of emerging phenolic pollutants in plants, which may increase the potential health risk associated with food exposure. Our study discovered that light induced generation and accumulation of more toxic brominated organic compounds (Br-org) in lettuce leaves under the stress of acetaminophen (ACE) than that without light, as evidenced by an increase in C-Br bond intensity in FTIR analysis. This result can be explained by the oxidation of bromide ions (Br^-) by reactive species (ROS and ³Chl*) of chloroplast into reactive bromine species (RBS). The main mechanism is that the redox of Br^- reduced the oxidative damage of ACE to the structure and function of chloroplasts, providing good conditions for light energy uptake and utilization and promoting the increase of pigments and active species. Compared with the dark group exposed to 5 mg/L Br^-, the pigment content, H₂O₂ and ¹O₂ level of the light group increased by 56%, 84% and 69%, respectively. On the other hand, RBS attacks certain electrophilic organic compounds in leaves to generate Br-org. Triple excited state of chlorophyll (³Chl*) was the dominant species for the transformation of ACE, while RBS is a key factor in the generation of Br-org in the Br^-/light/chlorophyll system. A total of six transformation products were identified by HPLC-MS/MS, which were involved in three transformation pathways: methylation, hydroxyl oxidation and hydroxylation followed by bromination. This is the first report that Br^- could enter the chloroplast and improved chloroplast structure under ACE stress, and elucidated the bromination mechanism of organics in terrestrial plant involving of biophotochemical bromination in chloroplast besides enzyme-catalyzed bromination. This study is beneficial for risk assessment and prevention of emerging phenolic pollutants.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"153 ","pages":"275-288"},"PeriodicalIF":5.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143039492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}