The decomposition and ecological risk of DDTs and HCHs in the soil-water system of the Meijiang River

doi:10.1016/j.envres.2019.108897

	The decomposition and ecological risk of DDTs and HCHs in the soil-water system of the Meijiang River
	He, Wenming 1,2,4,5; Ye, Mengling 2; He, Hongming 3,4,5; Zhu, Mingyong 1; Li, Yu 6
刊名	ENVIRONMENTAL RESEARCH
	2020
卷号	180 页码:8
关键词	Organochlorine Sediments Meijiang river basin Soil-water system
ISSN号	0013-9351
DOI	10.1016/j.envres.2019.108897
通讯作者	Li, Yu(liyuljy@l63.com)
英文摘要	This research project was designed to study the residues of OCPs (organochlorine pesticides) in the sediments of the Meijiang River Basin. Samples from the Meijiang River Basin were analyzed by gas chromatography-mass spectrometry after being pretreated by Soxhlet extraction, and their compositions, distributions and sources were evaluated. The current study presents the distribution of OCPs in the soils and sediments of the Meijiang River Basin. The results demonstrate that OCPs contamination is an important environmental concern due to the excessive use of these compounds in the agricultural and industrial sectors. The ratios of alpha-HCH/gamma-HCH, (DDE + DDD)/Sigma DDTs, p,p-DDT/o,p-DDT, and DDD/DDE were used as indices for identifying the possible pollution sources and assessing the decomposition of the parent compounds and the recent gamma-HCH and DDT inputs. At the XY (Xiyang) and DSGYY (Dongshenggongyeyan) sites, the pollutants had industrial origins. At other sites (QTH (Qutianhu), LXC (Longxichun), ZJC (Zhenjiaochun), HKC (Hekouchun), GS (Guangshan) and RGQ (Raogongqiao)), the pollution was caused by dissolved organic matter. The SHB site was polluted by transportation and upstream pollutants. At the SXC (Shixichun), YZX (Youzhihe), DSH (Dongshihe) and ZGG (Zhegupai) sites, the metabolite was p,p'-DDD and was produced in an environment with anaerobic conditions. At the FJC (Fujiangkou), QTH (Qiutianhu), GS (Guangshang) and MX (Meixi) sites, the metabolite was DDE and was produced under aerobic conditions. In view of the health risks, the risk quotients for these contaminants were evaluated, and all risk quotients were less than 1 under the best-case scenario. This result suggests that the investigated pollutants may pose little hazard to the local ecosystem. The sediments containing toxic pesticides had a less than 55% ecological risk, indicating that the ecological risk of HCHs in the soils from the Meijiang River Basin is low.
资助项目	National Natural Science Foundation of China[41672180] ; Science & Technology Basic Resources Investigation Program of China[2017FY101303] ; Science & Technology Basic Resources Investigation Program of China[2017YFC0505205] ; Key Platforms and Scientific Research Projects in Universities in Guangdong Province of China[2018KTSCX212] ; Guangdong Rural Science and Technology Commissioner Project of China[2019066]
WOS关键词	ORGANOCHLORINE PESTICIDES OCPS ; SEDIMENT CORES ; EXPOSURE ; AGE
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000502420600026
资助机构	National Natural Science Foundation of China ; Science & Technology Basic Resources Investigation Program of China ; Key Platforms and Scientific Research Projects in Universities in Guangdong Province of China ; Guangdong Rural Science and Technology Commissioner Project of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/130814]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Yu
作者单位	1.Jiaying Univ, Sch Chem & Environm, Meizhou 514015, Guangdong, Peoples R China 2.World Standardizat Certificat & Testing Grp, Shenzhen 518108, Guangdong, Peoples R China 3.East China Normal Univ, Sch Geog Sci, Shanghai, Peoples R China 4.Northwest Agr & Forestry Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 5.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	He, Wenming,Ye, Mengling,He, Hongming,et al. The decomposition and ecological risk of DDTs and HCHs in the soil-water system of the Meijiang River[J]. ENVIRONMENTAL RESEARCH,2020,180:8.
APA	He, Wenming,Ye, Mengling,He, Hongming,Zhu, Mingyong,&Li, Yu.(2020).The decomposition and ecological risk of DDTs and HCHs in the soil-water system of the Meijiang River.ENVIRONMENTAL RESEARCH,180,8.
MLA	He, Wenming,et al."The decomposition and ecological risk of DDTs and HCHs in the soil-water system of the Meijiang River".ENVIRONMENTAL RESEARCH 180(2020):8.