生态学杂志2011，Vol.30Issue(1)：12-17,6.
DDTs和HCHs在珠江口南部海域管角螺的组织分布及生物转化
Distribution and biotransformation of DDTs and HCHs in Hemifusus tuba from the southern Pearl River Estuary
摘要
Abstract
Based on the measurements of DDTs and HCHs concentrations in various tissues of Hemifusus tuba from the southern Pearl River Estuary, the distribution and biotransformation of the two organochlorine pesticides ( OCPs) in this marine gastropod were examined. The DDTs and HCHs concentrations in H. tuba intestine were much higher than those in other tissues, sug gesting that the intestinal wall of H. tuba was an important barrier to DDTs and HCHs. The high er DDTs and HCHs concentrations in H. tuba gonad suggested that the gonad was an important site for the accumulation of DDTs and HCHs. The ( DDE＋DDD)/p ,p'-DDT ratio in various H. tuba tissues (3. 20-7. 53) was much higher than that in sediment ( 1. 23) . indicating that H. tuba had stronger capability to metabolize DDT. The highest ( DDE＋DDD)/p ,p'-DDT ratio was found in gill, suggesting that gill could play an important role in excreting the DDT metabolites (DDD and DDE) in H. tuba. Among the HCHs in all H. tuba tissues, β-HCH was the most persistent HCH isomer (63. 88％ -88. 99％ ) , implying that H. tuba was able to efficiently de grade α-HCH to β-HCH. Though the DDTs and HCHs concentrations in H. tuba muscles did not exceed the tolerable daily intake standard proposed by the WHO， more attention should be paid to the potential risks of OCPs biomagnification along food chain to human health.关键词
有机氯农药/海洋腹足类/累积/生物转化/珠江口南部海域分类
资源环境引用本文复制引用
田磊,张大文,黄小平..DDTs和HCHs在珠江口南部海域管角螺的组织分布及生物转化[J].生态学杂志,2011,30(1):12-17,6.基金项目
中国科学院知识创新工程重要方向性项目(KZCXZ-YW-Q07),908专项(GD9084)-01-03、GD908-02-02)和国家自然科学基金项目(41076069、40776086)资助, （KZCXZ-YW-Q07）
