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-  2009 

1860s以来巢湖沉积物金属元素富集特点及其对人类活动的指示意义

DOI: 10.11821/yj2009050008

Keywords: 巢湖,金属元素分析,人类活动影响,环境变化

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Abstract:

摘要: 根据对巢湖CH1钻孔沉积物进行210Pb比活度测试和粒度、磁学、金属元素分析,在推算沉积速率并建立沉积物年代学标尺的基础上,分析了沉积物金属元素富集与粒度组成和磁学特性间的关系。在对沉积物金属元素含量进行粒度校正后,发现大约自沉积速率推算年代1860s A.D.起,沉积物Cu、Zn元素开始出现非自然水平富集,是化石燃料高温燃烧、金属冶炼与机械制造等人为活动影响所致。这与始自1861年,以生产枪炮、弹药、火轮船为主的中国近代第一个兵工厂——安庆内军械所,在时间上与可能的金属污染性质上是完全一致的,说明巢湖沉积物金属元素的非自然水平富集,是对这一时期区域工业发轫与人类工业活动的沉积响应。

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