食品科学2011，Vol.32Issue(14)：285-288,4.
电感耦合等离子体质谱法对花生中镉测量的不确定度评定
Uncertainty Evaluation for the Determination of Cadmium in Peanuts by ICP-MS
刘同英 1武善风 1张立东1
作者信息
- 1. 临沂出入境检验检疫局,山东临沂276034
- 折叠
摘要
Abstract
Objective： To establish a determination method of cadmium in peanuts by inductively coupled plasma-mass spectroscopy （ICP-MS） and evaluate the uncertainty of determination results. Methods： A mathematic model was established by analyzing the uncertainty sources from different parts. The final uncertainty degree was calculated by standard uncertainty and extended uncertainty during measurements. Results： The cadmium content in peanuts was determined to be （162 ± 5） μ g/ kg with a k value of 2, which met the national standard. The major uncertainty was attributed to four sources such as repeatability of measurement, calibration of standard solution, volume and sampling. Conclusion： This method is applicable to the evaluation of uncertainty during component determination in foods by ICP-MS.关键词
电感耦合等离子体质谱仪/镉/不确定度/花生/校准Key words
inductively coupled plasma-mass spectroscopy （ICP-MS）： cadmium/uncertainty evaluation/peanut/calibration分类
化学化工引用本文复制引用
刘同英,武善风,张立东..电感耦合等离子体质谱法对花生中镉测量的不确定度评定[J].食品科学,2011,32(14):285-288,4.
