Abstract：A method was developed for the determination of As,Sb,Bi,Cd and Sn in soils and sediments for geochemical exploration purposes. Sample powder was mixed with NH4I and heated at -800 ℃,iodides of As,Sb,Bi,Cd and Sn were formed and sublimated from the sample matrix and then extracted by diluted HCl. The prepared solution was determined by ICP-AES. The sample treatment procedure,such as the ratio of NH4I to sample,and sublimation and extraction conditions,was studied. The instrument determination parameters,including ICP power,Ar gas flow rate,spectral wavelengths,background subtraction,spectral interferences correction and internal standard,were selected and optimized. The established procedure is rapid and simple,the detection limits for the five elements are in the range of 0.01-0.35 μg·g-1,and the analytical results for soil and sediment reference materials were in good agreement with the reference values.
何红蓼,胡明月,巩爱华,温宏利,阙松娇. 碘化物升华分离-电感耦合等离子体光谱法测定土壤和沉积物中砷、锑、铋、镉、锡[J]. 光谱学与光谱分析, 2008, 28(03): 663-666.
HE Hong-liao,HU Ming-yue,GONG Ai-hua,WEN Hong-li,QUE Song-jiao. Determination of As,Sb,Bi,Cd and Sn in Soils and Sediments by Inductively Coupled Plasma Atomic Emission Spectrometry after. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(03): 663-666.
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