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为了认识玉珠峰冰川区域大气中痕量元素的组成和来源,利用高分辨电感耦合等离子体质谱仪对2009年10月采自玉珠峰冰川海拔5 800 m的一个75 cm雪坑中15种可溶性痕量元素(Al、Fe、Ba、Cd、Co、Cr、Cu、Li、Ni、Zn、Pb、Sb、Sr、U和V)的浓度进行了测试.结果表明:痕量元素的浓度变化很大,从最小值1.2 pg.g-1(U)到最大值293 ng.g-1(Fe),痕量元素浓度的最大值和最小值之比在7(Sb)到358(Li)之间.对痕量元素的地壳富集系数分析表明,除粉尘外,Cd、Sb、Zn、Pb和Cu还存在其他来源的重要贡献.与青藏高原其他地区雪冰中痕量元素对比表明,本区的痕量元素的浓度低于天山和慕士塔格峰冰川的浓度,部分痕量元素也低于东绒布冰川雪冰中的浓度,揭示了玉珠峰区域大气中较低的大气痕量元素背景值.尽管如此,本区的所有痕量元素浓度依然远高于格陵兰和南极雪冰中的相应浓度.
In order to understand the composition and origin of trace elements in the atmosphere of the Yulin-Zhuhai glacier region, 15 high-resolution inductively coupled plasma mass spectrometers The concentrations of soluble trace elements (Al, Fe, Ba, Cd, Co, Cr, Cu, Li, Ni, Zn, Pb, Sb, Sr, U and V) were tested.The results showed that the concentrations of trace elements The maximum and minimum concentrations of trace elements were in the range of 7 (Sb) to 358 (Li) from a minimum of 1.2 pg.g-1 (U) to a maximum of 293 ng.g- The analysis of crustal enrichment coefficient of trace elements shows that besides the dust, there are other sources of Cd, Sb, Zn, Pb and Cu.It is compared with the trace elements in snow ice in other areas of Qinghai-Tibet Plateau, The concentration of trace elements in this area is lower than that of the Tianshan and Muztagata glaciers, and some of the trace elements are also lower than the concentrations in snow ice of the East Rongbu glacier, revealing the lower atmospheric mark However, the concentration of all trace elements in this area is still much higher than the corresponding concentrations in Greenland and Antarctic snow ice.