农业环境科学学报2011，Vol.30Issue(12)：2408-2415,8.
广东沿岸牡蛎体内总汞含量变动趋势及其健康风险评价
Spatial-temporal Trends and Health Risk Assessments of Total Mercury in the Oysters from Guangdong Coastal Bays, China
摘要
Abstract
To ensure the quality and safety of seafood products and provide clues for the protection of marine environments from Guangdong coastal waters, concentrations of total mercury in the soft tissues of oysters were collected from 17 important Guangdong estuaries/bays in March from 2004 to 2010 respectively, and were analyzed using atomic fluorescence spectrometry. Combined with the monitoring data on mercury level in oysters in these waters during 1989 to 1993, the paper analyzed the spatial and temporal trends of mercury content in oysters from Guangdong coastal waters. In addition, the Single Factor Index(SI) and Hazard Quotient(HQ) methods were used for the assessments of health risk of oysters to human. The results showed that all stations/samples were found within the limits for mercury standards as set by the FAO, though 100 percent of mercury in oysters was detected. The annual mercury content in oysters has decreased significanT1y since 1989, which averaged (0.080±0.114)mg·kg-1 wet weight in total. The results of health risk assessment indicated that both the SI and HQ well reflected the similar trends. The HQ was 3.39×10-2 in 1989, and decreased significanT1y to 2.23×10-2 during 1991 and 1993. And since 2004, the concentration of mercury has been well within a lower level [(0.012±0.006)mg·kg-1 wet weight], with the comparative slower decrease of mercury content in West Guangdong waters than the other two districts. And the HQ during 2006 and 2010 averaged 0.13×10-2, which was far lower than the HQ threshold( 1.0), therefore the mercury level of oysters from Guangdong coastal waters was safe and had no possible hazards to health.关键词
重金属/汞/牡蛎/健康风险评价/广东沿海Key words
heavy metals/ mercury/ oyster/ risk assessment/ Guandong coastal waters分类
资源环境引用本文复制引用
王学锋,贾晓平,陈海刚,蔡文贵,马胜伟,王增焕..广东沿岸牡蛎体内总汞含量变动趋势及其健康风险评价[J].农业环境科学学报,2011,30(12):2408-2415,8.基金项目
科技部科研院所社会公益研究专项(2005DIB3J021) （2005DIB3J021）
广东省渔业生态环境重点实验室开放基金(LFE-2010-001,LFE-2011-05) （LFE-2010-001,LFE-2011-05）
