作　　者： ; ; ; ; ;

机构地区： 茂名学院化工与环境工程学院

出　　处： 《黑龙江水专学报》 2007年第3期101-103,107,共4页

摘　　要： 采用单项污染指数和Hakanson生态风险指数法,评价茂名近岸海域水质和底质中典型重金属污染物的质量比,评估了海水和沉积物中重金属的污染程度,定量确定了其潜在生态风险程度。结果表明,茂名近岸海水中重金属污染指数均低于0.6,重金属污染不明显。表层沉积物中重金属的单项污染指数为0.17～1.8,重金属的污染程度依次为Cd、Pb、As、Cu和Hg。表层沉积物中重金属生态风险指数为44.3～83.4,表明这些水域的表层沉积物已受到重金属的轻微污染,体现出极轻的生态危害,但重金属Cd在水东港养殖区、第一滩风景区和城市排污区等监测水域具有中等潜在生态风险。 The article intends to present investigation and evaluation of the potential ecological risks due to the heavy metal pollution in the sea water and sediments in the main course of Maoming Harbor in shore. The pollution indexes of heavy metals in the water of the whole bay were lower than 0.6, which indicated that the cont- ents of heavy metals were low and insufficient to affect the ecological system in the bay. the single factor pollution indexes of heavy metals in the surface sediment of most port of the bay varied from 0.17-1.8, the pollution degrees of heavy metal pollutants in sediments indicate the following order ：Cd〉Pb〉As〉Cu〉Hg. The potential ecological risk indexes of heavy metals in the surface sediment of most port of the bay varied from 44.3 83.4, with sediments slightly affected by heavy metals, the ecology harm manifested of extremely light, that the moderate potential ecological risk likely to be brought by CA in the area of Shuidong cultivation,first beach and city pollution discharge.

关 键 词： 沉积物 重金属 生态风险 茂名

领　　域： [环境科学与工程]