Concentration of trace elements and their sources in a snow pit from Yuzhu Peak, north-east Qinghai-Tibetan Plateau  

作　　者：YueFang Li XiaoLan Shi NingLian Wang JianChen Pu TanDong Yao 

机构地区：[1]State Key Laboratory of Cryospheric Science, CoM and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

出　　处：《Research in Cold and Arid Regions》2011年第3期216-222,共7页寒旱区科学（英文版）

基　　金：supported by the National Natural Science Foundation of China (40771046, 40930526);the National Major Scientific Research Programs (2010CB951404)

摘　　要：In order to understand the potential influence of pollution fi-om human activity on the natural cycle of trace elements in the at- mosphere over the eastern Kunlun mountains, north-eastern part of the Qinghai-Tibetan Plateau, concentrations ofAl, Fe, Ba, Cd, Co, Cr, Cu, Li, Ni, Zn, Pb, Sb, Sr, U and V in a 75 cm-deep snow pit recovered from 5,800 m a.s.1, of the Yuzhu Peak Glacier on October 25, 2009, were determined by a sector field inductively coupled plasma mass spectrometry. The results indicate that con- centrations of the measured trace elements vary by orders of magnitude from one element to another ranging from the minimum value 1.2 pg/g （U） to the maximum value 293 ng/g （Fe）; the value of Max/Min ranges from 7 pg/g （Sd） to 358 pg/g （Li）. EFc values of measured trace elements show that there are other important sources except dust for Cd, Sb, Zn, Pb and Cu. Comparison of the concentrations of the measured trace elements with those in other areas in the Tibetan Plateau indicates that trace element con- centrations for Yuzhu Peak are lower than those in east Tianshan and Muztagh Ata （Pamirs）. Concentrations of some trace elements are also lower than those in East Rongbuk Glacier. However, concentrations of all measured trace elements are extensively higher than those in Greenland and the Antarctic.In order to understand the potential influence of pollution fi-om human activity on the natural cycle of trace elements in the at- mosphere over the eastern Kunlun mountains, north-eastern part of the Qinghai-Tibetan Plateau, concentrations ofAl, Fe, Ba, Cd, Co, Cr, Cu, Li, Ni, Zn, Pb, Sb, Sr, U and V in a 75 cm-deep snow pit recovered from 5,800 m a.s.1, of the Yuzhu Peak Glacier on October 25, 2009, were determined by a sector field inductively coupled plasma mass spectrometry. The results indicate that con- centrations of the measured trace elements vary by orders of magnitude from one element to another ranging from the minimum value 1.2 pg/g （U） to the maximum value 293 ng/g （Fe）; the value of Max/Min ranges from 7 pg/g （Sd） to 358 pg/g （Li）. EFc values of measured trace elements show that there are other important sources except dust for Cd, Sb, Zn, Pb and Cu. Comparison of the concentrations of the measured trace elements with those in other areas in the Tibetan Plateau indicates that trace element con- centrations for Yuzhu Peak are lower than those in east Tianshan and Muztagh Ata （Pamirs）. Concentrations of some trace elements are also lower than those in East Rongbuk Glacier. However, concentrations of all measured trace elements are extensively higher than those in Greenland and the Antarctic.

关 键 词：trace elements DUST anthropogenic pollution Yuzhu Peak Glacier 

分 类 号：P426.63[天文地球—大气科学及气象学] S812.1[农业科学—草业科学]