高分辨电感耦合等离子体质谱仪测定雪冰中超痕量金属方法研究

详细信息

Trace Element Determination in Snow and Ice by Double Focusing ICP-MS

Institute of Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Science, Lanzhou 730000, China

Abstract: Double focusing inductively coupled plasma spectrometry (ICP-MS) combing with microconcentricnebulizer have been first applied to the simultaneous determination of Li, Cd, Cs, Pb, Sb, Ba, Tl, Bi ,U, Al, Fe, Mn, Co, Cu and Zn in snow and ice at the 1 pg/ mL and 100 ng/mL level in Tibetan plateau. The volume percentage of concentric HNO\-3(60% HNO\-3) in samples was investigated and 1% was the appropriate percentage in samples considering the samples characteristics in Tibetan plateau. Measurement repeatability based on a snow sample in terms of RSD varies
from 2.5% to 17.5% depending on the elements. The accuracy of the analytical method was verified by analysis of a certified reference material (SLRS-4, riverine water).

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