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太湖、巢湖沉積物中重金屬污染的總量特征及其區域性差異
摘要: 選取太湖、巢湖污染較為嚴重的區域為研究對象,采集季節性沉積物柱狀樣,以0.5cm的間距高精度分割樣品,分析其中的Fe,Mn,Cu,Zn等重金屬元素的含量,對沉積物中重金屬的總量特征及季節性變化特征進行了分析,得出以下結論:太湖、巢湖沉積物中重金屬的總量均呈現出Fe>Mn>Zn>Cu的特征,季節性變化幅度為Mn>Fe>Zn>Cu,重金屬元素的地球化學性質對其季節性變化有很大的影響.同時,不同的區域背景差異(如元素豐度、污染狀況等)導致了太湖、巢湖采樣點沉積物中重金屬元素季節性特征的差異. Abstract: The heavily polluted areas were chose as the sampling sites of Taihu lake and Chaohu lake. The sediments were sampled in different seasons, with the samples separated at 0.5cm intervals, Heavy metal contents (Fe, Mn, Cu, Zn)were analyzed, and the contents and seasonal variation characteristics of heavy metals were discussed. Comparisons were made between two lakes and the same lake in different sampling sites. The results show that the order of the heavy metal concentration is Fe > Mn > Zn > Cu, and the order of variation range is Mn > Fe > Zn > Cu. In large extent, the seasonal variation range is affected by the geochemical characteristics of the heavy metals. The different characteristics of heavy metal elements can be attributed to the regional differences and different pollution extents. 作 者: 鄭樂平 劉玉梅 錢顯文 施曉燕 ZHENG Le-ping LIU Yu-mei QIAN Xian-wen SHI Xiao-yan 作者單位: 鄭樂平,ZHENG Le-ping(上海大學環境科學與工程系,上海,200444;環境地球化學國家重點實驗室,中國科學院地球化學研究所,貴陽,550002)劉玉梅,錢顯文,施曉燕,LIU Yu-mei,QIAN Xian-wen,SHI Xiao-yan(上海大學環境科學與工程系,上海,200444)
期 刊: 環境化學 ISTICPKU Journal: ENVIRONMENTAL CHEMISTRY 年,卷(期): 2009, 28(6) 分類號: X13 關鍵詞: 沉積物 重金屬 總量特征 太湖 巢湖. Keywords: sediment heavy metals content characteristics Taihu lake Chaohu lake.【太湖、巢湖沉積物中重金屬污染的總量特征及其區域性差異】相關文章:
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