Abstract
Sixteen organochlorine pesticides (OCPs) were investigated in the 80 agricultural topsoil samples of Three Gorges Dam region, China. The concentration of OCPs ranged from 1.26 to 22.15 ng g−1, with a mean concentration 6.49 ng g−1. Dichlorodiphenyltrichloroethanes (DDTs) and hexachlorocyclohexanes (HCHs) were predominant compared to other OCPs, with mean concentrations 1.80 and 1.27 ng g−1, respectively, accounting for 28 and 20 % of the total OCPs. Ratio analysis indicated that there is new input of DDTs in this study area. However, HCHs residual was mainly from historical use and atmospheric deposition. Other OCPs were due to the historical use in the studied area. Based on the soil quality guideline, both DDTs and HCHs pollution were in the low pollution level. Cancer risk assessment indicated that OCPs concentrations in this area presented a low cancer risk level. The study can offer some reference to the land management in the Three Gorges Dam region.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 5001-5008 |
| Number of pages | 8 |
| Journal | Environmental Earth Sciences |
| Volume | 74 |
| Issue number | 6 |
| DOIs | |
| State | Published - Sep 2 2015 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2015, Springer-Verlag Berlin Heidelberg.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
-
SDG 3 Good Health and Well-being -
SDG 7 Affordable and Clean Energy
Keywords
- Agricultural topsoil
- DDTs
- HCHs
- OCPs
- Three Gorges Dam region
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