食品科学2016，Vol.37Issue(18)：185-189,5.DOI:10.7506/spkx1002-6630-201618030
ICP-MS法和石墨炉原子吸收法测定大米中镉含量不确定度评估的比较
Comparative Study of Uncertainty Evaluation for the Determination of Cadmium Content in Rice by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and Graphite Furnace Atomic Absorption Spectrometry
摘要
Abstract
The content of cadmium in rice was determined by inductively coupled plasma-mass spectrometry (ICP-MS) and graphite furnace atomic absorption spectrometry, respectively. The sources of uncertainty in the measurement process were comprehensively considered. The various factors that affect the uncertainty were systematically analyzed. A mathematical model for uncertainty evaluation was established and used to comparatively evaluate the uncertainties of the two analytical methods. The expanded uncertainties of these two methods were 0.020 and 0.034 mg/kg (k = 2), respectively, when the determination results of cadmium were close to the maximum allowable limit (0.20 mg/kg).关键词
镉/电感耦合等离子体质谱法/石墨炉原子吸收法/不确定度Key words
cadmium/inductively coupled plasma-mass spectrometry (ICP-MS)/graphite furnace atomic absorption spectrometry/measurement uncertainty引用本文复制引用
张建辉,张继红,张丽,戴璇,袁凤君..ICP-MS法和石墨炉原子吸收法测定大米中镉含量不确定度评估的比较[J].食品科学,2016,37(18):185-189,5.基金项目
湖南省科技厅资助项目 （）
