Spatial Distribution and Assessment of Total Mercury in the Surface Sediment in Nanao Sea Areas, Eastern Guangdong Province

摘要

Nanao is one of the most important mariculture bases in Guangdong Province,China.Total mercury from 16 surface sediments were analyzed in Baisha Bay of Nanao in March,2011.The results showed that the mean concentration of total mercury in surface sediments was 64.38 ng/g and the potential ecological risks of mercury have reached a moderate level in the bay.%粤东南澳海域是广东省养殖规模最大的海水养殖基地之一,为了解养殖海域沉积物中汞的分布及其可能产生的生态风险,2011年3月在南澳白沙湾海域采集不同功能养殖区和对照海域的表层沉积物,对其总汞含量进行了测定.结果表明,白沙湾海域表层沉积物中总汞平均含量为64.38 ng/g,潜在生态风险程度达到了中等水平.