农业环境科学学报2012，Vol.31Issue(8)：1608-1615,8.
海南岛沿岸牡蛎体内六六六的时空变化特征分析及风险评价
Spatial-temporal Characters Analysis and Risk Assessment of HCHs in Oysters Along Hainan Island Coastal Waters, China
摘要
Abstract
In each March during 2006-2011, oyster samples(Crassostrea rivularis Gould) were collected from Maniao harbor , Dongzhai harbor, Basuo harbor and Yulin harbor along Hainan Island coastal waters, China. Thirty adult individuals were collected at each site every time. Gas chromatography with electron capture detector was used to quantify the contents of HCH isomers(α-, β -, γ -, δ-HCH). The results indicated that the contents of HCHs in tissue samples varied from undetected to 1.16 ng·g‐1·wet with a mean value 0.15 ng·g‐1·wet during 2006-2011, which was decreased about 45 times as compared with the mean value of shellfish samples from Hainan Island coastal waters in 1985. During 2006-2008, the annual average contents of HCHs decreased slightly from 0.44 ng·g‐1 to 0.04 ng·g‐1,and fluctuated over a small range between 0.04 ng·g‐1 and 0.15 ng·g‐1 from 2009 to 2011. In general, the annual average contents of HCHs in the oyster samples maintained very low levels during the six years. The mean contents of HCHs in oyster tissues from the four sampling sites generally were in the following orders: Maniao harbor > Dongzhai harbor > Basuo harbor > Yulin harbor, respectively. The composition analysis of HCHs in the oyster samples showed that no recent usage of HCHs in these areas. Compared with other coastal areas, the levels of HCHs in oyster samples from Haitian Island coastal waters were relatively low. The quality assessment result indicated that HCHs along Hainan Island coastal waters accorded with the first grade of the National Marine Biological Quality Standard of China. The safe consumption of soft tissue of the oyster samples indicated that both of the cancer risk and the exposure risk were acceptable in the studied areas.关键词
海南岛沿岸/牡蛎/六六六/时空变化/风险评价Key words
Hainan Island coastal waters/ oysters/ HCHs/ spatial-temporal characters/risk assessment分类
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王清云,甘居利,陈海刚,马胜伟,张喆,蔡文贵,贾晓平..海南岛沿岸牡蛎体内六六六的时空变化特征分析及风险评价[J].农业环境科学学报,2012,31(8):1608-1615,8.基金项目
科技部科研院所社会公益研究专项(2005DIB3J021) （2005DIB3J021）
广东省科技计划项目(2009B030600001,2011A050902006) （2009B030600001,2011A050902006）
中央级公益性科研院所基本科研业务费专项资金项目(2009YD01,2010YD04,2010TS12) （2009YD01,2010YD04,2010TS12）
广东省渔业生态环境重点实验室重点开放课题(GDKL2010-001) （GDKL2010-001）
