| Residues, spatial distribution and risk assessment of DDTs and HCHs in agricultural soil and crops from the Tibetan Plateau | |
| Wang, CF (Wang, Chuanfei)1; Wang, XP (Wang, Xiaoping)1,2; Gong, P (Gong, Ping)1,2; Yao, TD (Yao, Tandong)1,2; Wang, XP | |
| Source Publication | CHEMOSPHERE
 |
| 2016 | |
| Volume | 149Issue:0Pages:358-365 |
| DOI | 10.1016/j.chemosphere.2016.01.120 |
| Abstract | Due to its high elevation and cold temperature, the Tibetan Plateau (TP) is regarded as the "Third Pole". Different from other polar regions, which are truly remote, the TP has a small population and a few agricultural activities. In this study, agricultural soil and crop samples (including highland barley and rape) were collected in the main farmland of the TP to obtain the contamination levels of dichlorodiphenyltrichloroethane (DDT) and hexachlorocyclohexane (HCH) in the Tibetan agricultural system as well as the relevant human exposure risks. The average concentrations of DDTs and HCHs in the agricultural soil, highland barley and rape were 1.36, 0.661, 1.03 ng/g dw and 0.349, 0.0364, 0.0225 ng/g dw, respectively. In the agricultural soil, DDTs and HCHs matabolism (DDE, DDD and (beta-HCH) were abundant, which indicated a "historical" source, whereas crops contained a similar composition ((DDE + DDD)/DDT, alpha/beta-HCH and alpha/gamma-HCH) to that of wild plants, suggesting that the DDTs and HCHs in crops are likely from long range atmospheric transport. The human health risks via non-dietary and dietary to DDTs and HCHs in the farmland were assessed. All of the hazard index (HI) values of DDTs and HCHs for non-carcinogenic risks were <1, and most of the cancer risk values were <10(-6), suggesting that DDTs and HCHs in the farmland will not pose non-carcinogenic risks and will pose only very low cancer risks to the Tibetan residents. (C) 2016 Elsevier Ltd. All rights reserved. |
| Subject Area | 自然地理学 |
| WOS ID | WOS:000372760100044 |
| Language | 英语 |
| Indexed By | SCI |
| Keyword | Persistent Organic Pollutants Organochlorine Pesticide-residues Polybrominated Diphenyl Ethers Polychlorinated-biphenyls Human Health Environmental Contaminants Background Soils Conifer Needles Surface Soil China |
| Cooperation Status | 国内 |
| Department | 环境 |
| Subtype | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itpcas.ac.cn/handle/131C11/7724 |
| Collection | 图书馆 |
| Corresponding Author | Wang, XP |
| Affiliation | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China. 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, CF ,Wang, XP ,Gong, P ,et al. Residues, spatial distribution and risk assessment of DDTs and HCHs in agricultural soil and crops from the Tibetan Plateau[J]. CHEMOSPHERE,2016,149(0):358-365. |
| APA | Wang, CF ,Wang, XP ,Gong, P ,Yao, TD ,&Wang, XP.(2016).Residues, spatial distribution and risk assessment of DDTs and HCHs in agricultural soil and crops from the Tibetan Plateau.CHEMOSPHERE,149(0),358-365. |
| MLA | Wang, CF ,et al."Residues, spatial distribution and risk assessment of DDTs and HCHs in agricultural soil and crops from the Tibetan Plateau".CHEMOSPHERE 149.0(2016):358-365. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| V.149 358-365 2016.p（1214KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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