光谱学与光谱分析, 2011, 31 (4): 1115, 网络出版: 2011-05-30  

ICP-MS法测土壤样品中铜铅的不确定度评定

Uncertainty Evaluation of Determination of Copper and Lead in Soil by Using ICP-MS
作者单位
吉林大学测试科学实验中心, 吉林 长春 130026
摘要
采用电感耦合等离子体质谱法(ICP-MS)对土壤样品中的铜和铅进行测定, 分析了影响测量不确定度的主要来源, 对样品溶解过程中的样品称量、 消解、 定容体积、 测定过程的标准溶液的配制、 曲线拟合、 仪器测量重复性等影响不确定度的分量进行分析, 按JJF1059—1999《测量不确定度评定与表示》的规定进行合成, 最终给出扩展不确定度。 这样结果的表达更加客观和真实。
Abstract
Copper and lead in soil samples were measured by using inductively coupled plasma mass spectrometry(ICP-MS), and the impacts of major source of measurement uncertainty were discussed.Uncertainty components such as sample weighing in the process of digestion, the volume size, preparation of standard solutions, curve fitting, measurement repeatability were analyzed and synthesized according to JJF1059—1999(Evaluation and Expression of Uncertainty in Measurement), and the final expanded uncertainty was given.Such expression of result was more objective and true.
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刘红艳, 周燕, 王铁夫, 李予晋. ICP-MS法测土壤样品中铜铅的不确定度评定[J]. 光谱学与光谱分析, 2011, 31(4): 1115. LIU Hong-yan, ZHOU Yan, WANG Tie-fu, LI Yu-jin. Uncertainty Evaluation of Determination of Copper and Lead in Soil by Using ICP-MS[J]. Spectroscopy and Spectral Analysis, 2011, 31(4): 1115.

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