南极冰盖现代降水中Pb的含量及环境意义

被引:7
作者
秦大河
任贾文
孙俊英
陈瓞延
文克玲
李良权
机构
[1] 中国科学院兰州冰川冻土研究所
[2] 清华大学现代应用物理系
[3] 清华大学现代应用物理系 兰州
[4] 兰州
[5] 北京
[6] 北京
关键词
南极冰盖; LEAF分析; Pb浓度; 人类活动污染; 地理分布;
D O I
暂无
中图分类号
P426.6 [降水];
学科分类号
摘要
超痕量重金属元素Pb在南极冰盖内因其含量极微(pS·g-1级)、本底极低,对环境质量极为灵敏,成为南极冰盖冰川化学研究的热点之一.文中介绍了中国学者采用LEAF技术,在国际上首次对南极冰盖表层雪(相当于现代降水)中Pb含量系统研究的结果,揭示了沿“1990年国际横穿南极考察队”路线,冰盖表层雪内Pb含量呈“西低东高”的分布规律,东南极洲冰盖的Pb含量比Larsen冰架和南极半岛高出1~2倍,前苏联南极考察队的考察活动是导致这一结果的主因.Larsen冰架、南极半岛的Pb浓度值可视为80年代末南极冰盖现代降水的本底
引用
收藏
页码:302 / 308
页数:7
相关论文
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