• 责任者：Sha Yanmei (Geoanalysis Center of No.1 Geology Exploration Institute ; Bureau of Geology and Mineral Resources of Henan Province ; Nanyang 473000 ; China)
• 刊名：Rock and Mineral Analysis
• 出版年：2009
• 卷期：28(5)
• 关键词：土壤 ; soils ; 沉积物 ; sediments ; 等离子体发射光谱 ; plasma emission spectroscopy
• 页码：p.474-478
• 图表：1 illus., 5 tables, 12 refs.
• 分类号：0900
• issnNo：ISSN0254-5357
• isbnNo：CN11-2131/TD

The measurement uncertainty for the analytical results of major elements including Al, Fe, Ca, Mg, K and Na in soil and stream sediment samples determined by inductively coupled plasma-atomic emission spectrometry (ICP-AES) was evaluated. The main sources of measurement uncertainty came from sub-uncertainties of the analytical balance, analytical glassware, calibration solutions, calibration curves, reagent volume and repetitive measurements. Each sub-uncertainty was calculated and the composed uncertainty and expanded uncertainty of the measurement results were obtained by combining the sub-uncertainties.