自格陵兰冰芯揭示出工业化社会以来Ｐｂ含量较工业化以前增加了 ２００倍［１］以来， Ｐｂ对环境的污染不断受到重视。现代北半球对流层中，人类活动释放的Ｐｂ已占北半球对流层中Ｐｂ含量的９０％以上［１～３］。然而，对于像南北极及青藏高原这样偏远的地区，Ｐｂ的环境测 Since Greenland ice core revealed that the Pb content in industrialized society has increased by 200 times than that before industrialization [1], the pollution of Pb has been paid more and more attention. In the modern troposphere of the northern hemisphere, Pb released by human activities accounts for over 90% of the total Pb in the troposphere of the northern hemisphere [1-3]. However, for such remote areas as the North and South Poles and the Tibetan Plateau, the Pb environment is measured