IGGCAS OpenIR  > 新生代地质与环境院重点实验室
Occurrence and depositional history of organochlorine pesticides in the sediments of the Zayandehrud River in the arid region of Central Iran
Varnosfaderany, Mohammad Nemati1; Soffianian, Alireza1; Mirghaffari, Nourollah1; Gu, Zhaoyan2,3; Chu, Guoqiang2
2020-09-01
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume255Pages:12
AbstractIn 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.
KeywordOrganochlorine pesticides (OCPs) Zayandehrud river Small artificial lakes Wet years Natural archives
DOI10.1016/j.chemosphere.2020.126847
Funding OrganizationIran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation
WOS KeywordPERSISTENT ORGANIC POLLUTANTS ; WATER ; CHINA ; CORE ; LAKE ; ESTUARY ; OCPS ; FINGERPRINTS ; RESIDUES ; RECORDS
Language英语
Funding ProjectIran National Science Foundation[95004684]
Funding OrganizationIran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation ; Iran National Science Foundation
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000538127800008
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96641
Collection新生代地质与环境院重点实验室
Corresponding AuthorVarnosfaderany, Mohammad Nemati
Affiliation1.Isfahan Univ Technol, Dept Nat Resources, Esfahan 8415683111, Iran
2.Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, 19 Beitucheng West Rd, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
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]. CHEMOSPHERE,2020,255:12.
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,255,12.
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):12.
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