【摘要】 对南四湖不同湖区的20个表层底泥样品的重金属浓度做了实验分析,并对底泥重金属元素进行了研究,揭示出南四湖不同湖区重金属元素空间分布的特征。结果表明,整个南四湖的上级湖已经受到Hg,As,Pb和Mn等重金属元素的污染。其中南阳湖的Hg污染严重,铅、砷等较次之;独山湖的As,Pb和Mn污染较重;昭阳湖污染较轻。更多还原

【Abstract】 The concentrations of Heavy metasl in the Nansihu Lake’s surface sediments were sampled at 20 locations in order to determine the spatial distribution of heavy metals and the degree of contamination in different areas of Nansihu Lake. The concentrations of heavy metals in the sufrace sediments of Nanyanghu Lake were significantly higher than those in any other area of Nansihu Lake. Dushanhu Lake suffered the worst Pb, and Mn contamination. Zhaoyanghu Lake was slightly polluted.更多还原