青海湖沉积物中多环芳烃的沉积记录

被引：11

作者：

郭建阳 ^{[1
]}

廖海清 ^{[2
]}

张亮 ^{[2
]}

汤智 ^{[2
]}

吴丰昌 ^{[2
]}

机构：

[1] 中国科学院地球化学研究所环境地球化学国家重点实验室

[2] 中国环境科学研究院湖泊生态环境研究中心国家环境保护湖泊污染国家重点实验室

来源：

生态学杂志 | 2011年 / 30卷 / 07期

关键词：

青海湖; 沉积柱; 多环芳烃; 来源;

D O I：

10.13292/j.1000-4890.2011.0177

中图分类号：

X524 [湖泊、水库];

学科分类号：

摘要：

采用GC/MS方法分析了青海湖沉积柱中16种美国EPA优先控制的多环芳烃(TPAHs)的垂直分布状况,并对其来源进行了分析。研究表明,0～20 cm沉积柱中TPAHs的含量为495.1～1172.5 ng.g-1,随沉积年代的更新TPAHs的含量呈增加趋势。这与珠江口和东海沉积柱中的记录基本一致,但明显不同于发达国家同类研究的结果。青海湖沉积物PAHs以2～3环(包括萘、苊、苊烯、芴、菲和蒽)为主,其含量平均占沉积物中PAHs总量的(72.4±8.9)%。青海湖沉积物中的PAHs主要来自长距离的大气传输,家庭燃煤与木材的低温燃烧是其主要来源,高温燃烧过程释放的PAHs(如机动车尾气的排放)近年来有明显增加的趋势。

引用

页码：1467 / 1472

页数：6

共 32 条

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