Occurrence and depositional history of organochlorine pesticides in the sediments of the Zayandehrud River in the arid region of Central Iran
文献类型：期刊论文
| 作者 | Varnosfaderany, Mohammad Nemati1; Soffianian, Alireza1; Mirghaffari, Nourollah1; Gu, Zhaoyan2,3; Chu, Guoqiang2 |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 255页码:12 |
| ISSN号 | 0045-6535 |
| 关键词 | Organochlorine pesticides (OCPs) Zayandehrud river Small artificial lakes Wet years Natural archives |
| DOI | 10.1016/j.chemosphere.2020.126847 |
| 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. |
| WOS关键词 | PERSISTENT ORGANIC POLLUTANTS ; WATER ; CHINA ; CORE ; LAKE ; ESTUARY ; OCPS ; FINGERPRINTS ; RESIDUES ; RECORDS |
| 资助项目 | Iran National Science Foundation[95004684] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000538127800008 |
| 资助机构 | 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 ; Iran National Science Foundation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/96641]  |
| 专题 | 地质与地球物理研究所_中国科学院新生代地质与环境重点实验室 |
| 通讯作者 | Varnosfaderany, Mohammad Nemati |
| 作者单位 | 1.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 |
| 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]. 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. |
入库方式： OAI收割
来源：地质与地球物理研究所
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