Method for the Estimation of the Past Illegal Dumping Recorded in a Sediment Core
Method for the Estimation of the Past Illegal Dumping Recorded in a Sediment Core
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DOI：
10.1007/s11270-006-9224-9
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发表时间：
2007-02
期刊：
影响因子：
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通讯作者：
K. Katahira;Miho Ishitake;H. Moriwaki;Syusaku Yoshikawa;O. Yamamoto;T. Fujita;H. Yamazaki
中科院分区：
文献类型：
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作者：
K. Katahira;Miho Ishitake;H. Moriwaki;Syusaku Yoshikawa;O. Yamamoto;T. Fujita;H. Yamazaki
采用微波萃取法，用电感耦合等离子体质谱（ICP-MS）测定了日本大坂市永池水库沉积物岩心中酸溶组分的重金属含量。1960年前后，在沉积物芯样中观察到几种金属的峰值。沉积物柱样中重金属含量的相关系数研究和聚类分析结果表明，Cr、Cd、Ni和Cu等重金属在峰值期来自不同时期的不同排放源。这些金属通常用于金属电镀，并且得出结论，尖峰是由金属电镀行业的非法废水引起的。计算了非法倾倒产生的重金属负荷量，估算了污染程度。
Heavy metal concentrations of the acid-soluble fraction in sediment core samples from Nagaike, a reservoir in Osaka City, Japan, were measured by ICP-MS following the microwave extraction method. Spiked peaks for several metals in the sediment core samples were observed around 1960. The results of correlation coefficient study and cluster analysis of heavy metal concentrations in the sediment core samples showed that some metals, such as Cr, Cd, Ni and Cu, in the period of the spiked peak were derived from the different emission sources from other periods. These metals are often used for metal plating, and it was concluded that the spiked peaks were caused by illegal effluent from the metal plating industry. The load amounts of heavy metals by illegal dumping were calculated and the magnitude of the pollution was estimated.