期刊论文

Distribution, assessment and sources analysis of persistent organic toxic chemicals in sediments of Dongting Lake

Huang, Zhong-Ting(13643860@qq.com)

中文

中国环境科学

1000-6923

2017

37

4

1530-1539

10.3969/j.issn.1000-6923.2017.04.041

湖南省自然科学基金资助项目（2016JJ5015）； 长沙市科技计划项目（K1403022-31）；

本校为第一机构

为揭示洞庭湖沉积物中六氯环己烷(HCHs)、双对氯苯基三氯乙烷(DDTs)、多环芳烃(PAHs)的分布特征及其来源,评价存在的生态风险,于2015年12月采集洞庭湖沅江市南嘴等31个点位0~20cm沉积物,测定了沉积物样品中HCHs、DDTs、PAHs的含量.结果发现,南洞庭湖点位ΣHCHs和ΣPAHs含量变化最大,西洞庭湖点位ΣDDTs和ΣOCPs含量变化最大;沉积物中HCHs的空间分布为东洞庭含量最高,其次为东洞庭湖与南洞庭湖的交界处,其它区域HCHs含量较低,DDTs含量除了在西洞庭湖北部含量较低外,其它区域DDTs含量都相对较高,并出现了多个高值区域,PAHs含量空间分布的最大值出现在东洞庭湖与南洞庭湖交界处,其次为西洞庭湖北部...

In order to reveal the distribution characteristics and the sources of HCHs, DDTs and PAHs in sediments of Dongting lake, and assess their ecological risk, this study investigated the contents of HCHs, DDTs and PAHs in sediments (0~20cm) from 31sample sites of Dongting Lake (Nanzui Town, Yuanjiang city) in Dec, 2015. The results showed that the ∑HCHs and ∑PAHs content variation in South Dongting Lake was the highest, and the highest content variation of ∑DDTs and ∑OCPs was in West Dongting Lake. Based on the spatial distribution, the conten...