期刊
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
卷 100, 期 -, 页码 171-177出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2013.10.034
关键词
Sedimentary record; HCH; DDT; Sediment core
资金
- National Natural Science Foundation of China [41173032, 41373110]
- National Science and Technology Support Program [1012BAC10B02]
The present study analyzed the distribution of HCHs and DDTs in a sediment core from the Old Yellow River Estuary, China. The OCP levels were detected by Soxhlet extraction followed by gas chromatography (GC) using a mass-selective detector. Sediment age was analyzed for Pb-210 using an Ortec GWL HPGe gamma spectrometer. The results indicated that the concentrations of Sigma DDT in the sediment core were much lower than those of Sigma HCH. Compared with the other estuarine and coastal regions in Chinese rivers, HCHs levels in this area were higher or similar, while DDTs levels were lower. The compositional analysis indicated that beta-HCH and p, p'-DOD were the predominant species. The temporal trends indicated that levels of HCHs and DDTs were related with their historical usage, emission and soil residues. According to the analysis of the ratio, HCHs in this area was mainly due to the technical historical residue and recent lindane. DDTs was mainly due to historical residue. The biodegradation conditions for DDTs were anaerobic. The dicofol-type DDTs application occurred in this area. Crown Copyright (C) 2013 Published by Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据