Hong Sungmin, Lee Khanghyun, Hou Shugui, Hur Soon Do, Ren Jiawen, Burn Laurie J, Rosman Kevin J R, Barbante Carlo, Boutron Claude F
Korea Polar Research Institute, Songdo Techno Park, Yeonsu-gu, Incheon 406-840, Korea.
Environ Sci Technol. 2009 Nov 1;43(21):8060-5. doi: 10.1021/es901685u.
As, Mo, Sn, and Sb have been determined by inductively coupled plasma sector field mass spectrometry (ICP-SFMS) in 143 depth intervals of high-altitude ice cores from Mt. Everest, covering an 800-year time period from 1205 to 2002 AD. The results clearly demonstrate the long-term historical record of atmospheric transport and deposition of As, Mo, Sn, and Sb that has prevailed at high altitudes in the central Himalayas. Natural contributions, mainly from mineral dust, have dominated the atmospheric cycles of As, Mo, Sn, and to some extent Sb during the 700 years prior to the 20th century. Compared to those of the pre-1900 period, pronounced increases of both concentrations and crustal enrichment factors are observed since the 1970s, with the highest increase factor for Sn and the lowest for As. Such increases are attributed to anthropogenic emissions of these elements, largely from stationary fossil fuel combustion and nonferrous metals production, particularly in India. Our central Himalayan ice core record provides an explicit recognition of rising atmospheric As, Mo, Sn, and Sb pollution in response to rapid economic growth in central Asia.
通过电感耦合等离子体质谱仪（ICP-SFMS）测定了珠穆朗玛峰高海拔冰芯143个深度区间的砷（As）、钼（Mo）、锡（Sn）和锑（Sb）含量，这些冰芯覆盖了公元1205年至2002年的800年时间。结果清楚地表明了喜马拉雅山脉中部高海拔地区大气中砷、钼、锡和锑的传输与沉积的长期历史记录。在20世纪之前的700年里，主要来自矿物粉尘的自然贡献主导了砷、钼、锡以及在一定程度上锑的大气循环。与1900年之前相比，自20世纪70年代以来，这些元素的浓度和地壳富集因子均显著增加，其中锡的增加因子最高，砷的增加因子最低。这种增加归因于这些元素的人为排放，主要来自固定化石燃料燃烧和有色金属生产，特别是在印度。我们的喜马拉雅山脉中部冰芯记录明确显示，随着中亚地区经济的快速增长，大气中砷、钼、锡和锑的污染正在加剧。
