Qianqian Hu , Yanpeng Liang , Honghu Zeng , Huanfang Huang , Wenwen Chen , Litang Qin , Xiaohong Song , Xiaoyu Yan
{"title":"中国西南典型喀斯特湿地水体和沉积物中的有机氯农药","authors":"Qianqian Hu , Yanpeng Liang , Honghu Zeng , Huanfang Huang , Wenwen Chen , Litang Qin , Xiaohong Song , Xiaoyu Yan","doi":"10.1016/j.gexplo.2024.107519","DOIUrl":null,"url":null,"abstract":"<div><p>The Huixian karst wetland, situated in southwest China, is the largest karst wetland. Historically, organochlorine pesticides (OCPs) have negatively affected the aquatic environment and the health of surrounding residents. In this study, the pollution status and environmental fate of OCPs in multiple environmental media in the Huixian wetland were investigated. The 15 OCPs' total concentration ranges in lake water, ditch water, groundwater, and lake sediment were 46.8–306 ng·L<sup>−1</sup>, 77.8–251 ng·L<sup>−1</sup>, 26.0–233 ng·L<sup>−1</sup>, and 44.8–345 ng·g<sup>−1</sup>, respectively. The concentrations and proportions of the different OCPs demonstrated significant seasonality. Historical residues are the main source of OCPs in the region, as evidenced by the typical ratios of DDTs and HCHs. Karst regions are extremely vulnerable to environmental changes, as evidenced by the highly dynamic character of the karst wetland system and the rapid migration of multimodal OCPs in different media without considerable damage. According to the risk assessment, both the possible carcinogenic risk to sediments in the Huixian wetland and the ecological risk to water bodies were acceptable. In contrast, the consumption of lake water may put the local population at health risk, which is a cause of concern.</p></div>","PeriodicalId":16336,"journal":{"name":"Journal of Geochemical Exploration","volume":null,"pages":null},"PeriodicalIF":3.4000,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Organochlorine pesticides in water and sediment at a typical karst wetland in Southwest China\",\"authors\":\"Qianqian Hu , Yanpeng Liang , Honghu Zeng , Huanfang Huang , Wenwen Chen , Litang Qin , Xiaohong Song , Xiaoyu Yan\",\"doi\":\"10.1016/j.gexplo.2024.107519\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The Huixian karst wetland, situated in southwest China, is the largest karst wetland. Historically, organochlorine pesticides (OCPs) have negatively affected the aquatic environment and the health of surrounding residents. In this study, the pollution status and environmental fate of OCPs in multiple environmental media in the Huixian wetland were investigated. The 15 OCPs' total concentration ranges in lake water, ditch water, groundwater, and lake sediment were 46.8–306 ng·L<sup>−1</sup>, 77.8–251 ng·L<sup>−1</sup>, 26.0–233 ng·L<sup>−1</sup>, and 44.8–345 ng·g<sup>−1</sup>, respectively. The concentrations and proportions of the different OCPs demonstrated significant seasonality. Historical residues are the main source of OCPs in the region, as evidenced by the typical ratios of DDTs and HCHs. Karst regions are extremely vulnerable to environmental changes, as evidenced by the highly dynamic character of the karst wetland system and the rapid migration of multimodal OCPs in different media without considerable damage. According to the risk assessment, both the possible carcinogenic risk to sediments in the Huixian wetland and the ecological risk to water bodies were acceptable. In contrast, the consumption of lake water may put the local population at health risk, which is a cause of concern.</p></div>\",\"PeriodicalId\":16336,\"journal\":{\"name\":\"Journal of Geochemical Exploration\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2024-06-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Geochemical Exploration\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0375674224001353\",\"RegionNum\":2,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Geochemical Exploration","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0375674224001353","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
Organochlorine pesticides in water and sediment at a typical karst wetland in Southwest China
The Huixian karst wetland, situated in southwest China, is the largest karst wetland. Historically, organochlorine pesticides (OCPs) have negatively affected the aquatic environment and the health of surrounding residents. In this study, the pollution status and environmental fate of OCPs in multiple environmental media in the Huixian wetland were investigated. The 15 OCPs' total concentration ranges in lake water, ditch water, groundwater, and lake sediment were 46.8–306 ng·L−1, 77.8–251 ng·L−1, 26.0–233 ng·L−1, and 44.8–345 ng·g−1, respectively. The concentrations and proportions of the different OCPs demonstrated significant seasonality. Historical residues are the main source of OCPs in the region, as evidenced by the typical ratios of DDTs and HCHs. Karst regions are extremely vulnerable to environmental changes, as evidenced by the highly dynamic character of the karst wetland system and the rapid migration of multimodal OCPs in different media without considerable damage. According to the risk assessment, both the possible carcinogenic risk to sediments in the Huixian wetland and the ecological risk to water bodies were acceptable. In contrast, the consumption of lake water may put the local population at health risk, which is a cause of concern.
期刊介绍:
Journal of Geochemical Exploration is mostly dedicated to publication of original studies in exploration and environmental geochemistry and related topics.
Contributions considered of prevalent interest for the journal include researches based on the application of innovative methods to:
define the genesis and the evolution of mineral deposits including transfer of elements in large-scale mineralized areas.
analyze complex systems at the boundaries between bio-geochemistry, metal transport and mineral accumulation.
evaluate effects of historical mining activities on the surface environment.
trace pollutant sources and define their fate and transport models in the near-surface and surface environments involving solid, fluid and aerial matrices.
assess and quantify natural and technogenic radioactivity in the environment.
determine geochemical anomalies and set baseline reference values using compositional data analysis, multivariate statistics and geo-spatial analysis.
assess the impacts of anthropogenic contamination on ecosystems and human health at local and regional scale to prioritize and classify risks through deterministic and stochastic approaches.
Papers dedicated to the presentation of newly developed methods in analytical geochemistry to be applied in the field or in laboratory are also within the topics of interest for the journal.