CAJ | 학술논문

对九龙江口表层沉积物中的TOC,Cu,Pb,Cd,Cr,Hg,As的含量进行了分析,TOC,Cu,Cd,Hg和As的质量分数均符合一类海洋沉积物质量标准;Pb和Cd在个别站位超标.相关性分析表明,九龙江口表层沉积物中大多数重金属呈现相近的来源特征,有机质是影响沉积物中重金属分布的重要因素.采用潜在生态风险指数法对九龙江口表层沉积物重金属污染的潜在生态风险进行了评价,结果表明,九龙江口存在一定程度的生态风险,重金属的生态风险依次为Cd>Hg>As>Pb>Cu>Cr,除Cd达到重的生态风险外,其余元素均为低生态风险.
대구룡강구표층침적물중적TOC,Cu,Pb,Cd,Cr,Hg,As적함량진행료분석,TOC,Cu,Cd,Hg화As적질량분수균부합일류해양침적물질량표준;Pb화Cd재개별참위초표.상관성분석표명,구룡강구표층침적물중대다수중금속정현상근적래원특정,유궤질시영향침적물중중금속분포적중요인소.채용잠재생태풍험지수법대구룡강구표층침적물중금속오염적잠재생태풍험진행료평개,결과표명,구룡강구존재일정정도적생태풍험,중금속적생태풍험의차위Cd>Hg>As>Pb>Cu>Cr,제Cd체도중적생태풍험외,기여원소균위저생태풍험.
Analyses were made of the contents of TOC, Cu, Pb, Cd, Cr, Hg and As in the surface sediments from the Jiulongjiang River Estuary. The contents of TOC, Cu, Cr, Hg and As are in accordance with the marine sediment quality standard I and those of Pb and Cd are beyond of the standard at some stations. The correlation analysis indicates that most of the heavy metals in the surface sediments of the Jiulongjiang River Estuary are similar in sources and organic metter is an important factor that influences the distributions of heavy metals in the surface sediments. The potential ecological risk caused by the pollution of heavy metals in the surface sediments is evaluated by means of serious ecological risk index. The results indicate that the potential ecological risk of the heavy metals in the surface sediments of the Jiulongjiang River Estuary is in the order of Cd>Hg>As>Pb>Cu>Cr. Of them, Cd is the most hazardous element and others belong to low ecological risk elements.