茅尾海养殖区重金属污染调查与评价

文章对2012—2014年8月平潮期钦州茅尾海增养殖区水质以及表层沉积物中的铜、铬、镉、汞、砷含量进行了调查和评价。结果表明,茅尾海养殖区水体和沉积物中重金属含量水平能满足规定的海水水产养殖标准值要求,水体中重金属总含量呈递减趋势,而沉积物中则相反,沉积物中重金属总体潜在生态危害程度仍处于低水平,但潜在生态危害的程度略有上升的趋势,潜在生态危害较大的是镉和汞。

The Investigation and Assessment of Heavy Metal Pollution in the Aquiculture Area of Maowei Sea

From 2012 to 2014, the content of copper, chrome, cadmium, mercury, arsenic in the water and overlying deposit of the aquiculture area in Maowei sea had been investigated and assessed every year in August. It turned out that the relevant metal content in the aquiculture area matched with the condition of aquiculture standards. The metal in the water presented downtrend, conversely in the overlying deposit. The potential ecologic harm of the metal in the deposit was in low-level, but presented rising trend, and the mercury and cadmium had more potential ecologic harm than other metals.