摘要
2012年8月沿殷村港共采集17个样点表层沉积物样品,分析了其中的营养元素及重金属含量。结果表明:殷村港沉积物中TN、TP和TOC含量均值分别为2.11、1.56、27.75 g·kg-1,沉积物中TOC与TN环境行为近似,说明TN的沉积与有机物的沉积相伴随;C/N及营养元素评价表明殷村港外源污染输入显著,有机氮污染严重;地累积指数评价显示殷村港Cu污染水平处于"中-强"污染等级,其次是Pb及Zn处于中度污染,Cr及Ni基本属于无污染状态。
Yin Cun Gang river has the greatest average annual runoff among all influent rivers in Lake Taihu basin,China.Therefore,it is critical to investigate the levels of nutrients and heavy metals in its sediments.The concentrations of TN,TP,TOC,Cu,Zn,Pb,Ni,and Cr in fluvial deposits were analyzed in August 2012.The average concentrations of TN,TP and TOC in the sediments were 2.11 g·kg-1,1.56 g·kg-1and 27.75 g·kg-1,respectively.The TOC was significantly correlated with TN,suggesting that the sedimentation of TN was accompanied by the organic substances.C/N values indicated that the exogenous pollution of organic substances occurred in the sediments.Index of geoaccumulation of heavy metals showed that the sediments were heavily contaminated with Cu and moderately with Pb and Zn.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2015年第8期1557-1562,共6页
Journal of Agro-Environment Science
基金
国家水体污染控制与治理科技重大专项(2012ZX07101001)
