干旱区生态环境知识资源中心(Arid): Occurrence and depositional history of organochlorine pesticides in the sediments of the Zayandehrud River in the arid region of Central Iran

Arid

DOI	10.1016/j.chemosphere.2020.126847
	Occurrence and depositional history of organochlorine pesticides in the sediments of the Zayandehrud River in the arid region of Central Iran
	Varnosfaderany, Mohammad Nemati; Soffianian, Alireza; Mirghaffari, Nourollah; Gu, Zhaoyan; Chu, Guoqiang
通讯作者	Varnosfaderany, MN
来源期刊	CHEMOSPHERE
ISSN	0045-6535
EISSN	1879-1298
出版年	2020
卷号	255
英文摘要	In this study, surface sediments along the Zayandehrud River (14 samples), and two dated core sediments (46 samples) from small artificial urban lakes at the middle section of the Zayandehrud River in the Gavkhooni basin in the central arid regions of Iran were analyzed for residual levels of 20 organochlorine pesticide (OCP) compounds. Total OCP concentrations ranged from 0.1 to 50.1 ng g-1 dry weight and from 1.9 to 51.5 ng g-1 dry weight in surface and core sediments, respectively. Dichlorodiphenyldichloroethylene (DDE) and dichlorodiphenyldichloroethane (DDD) were found to be the predominant OCPs in these sediments. The calculated metabolic and isomeric ratios confirmed the aged nature of residual dichlorodiphenyltrichloroethane (DDT) in sediments. Moreover, the isomeric ratios indicated the aged nature of technical HCH (hexachlorocyclohexane), while the contribution of gamma- HCH (lindane) as a main source has increased, especially in the last two decades. Past usage, as well as current usage of endosulfan technical mixture in the Gavkhooni basin, has been found in the last four decades. Analyses of sedimentary cores, as natural archives, have shown the successful ban on the use of organochlorine pesticides (especially DDT) in the Gavkhooni basin, and to some extent, in the central plateau of Iran. In general, it can be concluded that natural factors (i.e., floods and wet years) lead to soilleachate and play an essential role in remobilization and transfer of residual OCPs from soil to inland aquatic ecosystems in the Gavkhooni basin, which is an arid region. (C) 2020 Elsevier Ltd. All rights reserved.
英文关键词	Organochlorine pesticides (OCPs) Zayandehrud river Small artificial lakes Wet years Natural archives
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000538127800008
WOS关键词	PERSISTENT ORGANIC POLLUTANTS ; WATER ; CHINA ; CORE ; LAKE ; ESTUARY ; OCPS ; FINGERPRINTS ; RESIDUES ; RECORDS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院地质与地球物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324653
作者单位	[Varnosfaderany, Mohammad Nemati; Soffianian, Alireza; Mirghaffari, Nourollah] Isfahan Univ Technol, Dept Nat Resources, Esfahan 8415683111, Iran; [Gu, Zhaoyan; Chu, Guoqiang] Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, 19 Beitucheng West Rd, Beijing 100029, Peoples R China; [Gu, Zhaoyan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Varnosfaderany, Mohammad Nemati,Soffianian, Alireza,Mirghaffari, Nourollah,et al. Occurrence and depositional history of organochlorine pesticides in the sediments of the Zayandehrud River in the arid region of Central Iran[J]. 中国科学院地质与地球物理研究所,2020,255.
APA	Varnosfaderany, Mohammad Nemati,Soffianian, Alireza,Mirghaffari, Nourollah,Gu, Zhaoyan,&Chu, Guoqiang.(2020).Occurrence and depositional history of organochlorine pesticides in the sediments of the Zayandehrud River in the arid region of Central Iran.CHEMOSPHERE,255.
MLA	Varnosfaderany, Mohammad Nemati,et al."Occurrence and depositional history of organochlorine pesticides in the sediments of the Zayandehrud River in the arid region of Central Iran".CHEMOSPHERE 255(2020).