食品科学

• 分析检测 • 上一篇    下一篇

食品防腐剂丙酸钙中杂质元素的光谱分析

符 靓   

  1. 长江师范学院化学化工学院,重庆 408100
  • 出版日期:2013-06-25 发布日期:2013-06-17

Determination of Impurity Elements in Food Preservative Calcium Propionate by Inductively Coupled Plasma Optical Emission Spectrometry

FU Liang   

  1. College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
  • Online:2013-06-25 Published:2013-06-17

摘要:

采用电感耦合等离子体发射光谱(ICP-OES)法同时测定食品防腐剂丙酸钙中Mg、Al、Ti、Cr、Mn、Fe、Ni、Cu、Zn、As、Cd、Pb共12种杂质元素。样品用5%硝酸稀释后直接进行测定,对分析谱线、基体效应和等离子体参数等进行分析,确定仪器的最佳工作条件。结果表明:该方法的相对标准偏差均在3.9%以下,通过加标回收实验,各元素的回收率为91.2%~110.6%,与传统分析方法相比较,该方法具有良好的准确度和精密度,能同时进行多元素测定等优点,可用于丙酸钙的质量控制和安全评价。

关键词: 电感耦合等离子体发射光谱, 食品防腐剂, 丙酸钙, 杂质元素

Abstract:

The contents of impurity elements including Mg, Al, Ti, Cr, Mn, Fe, Ni, Cu, Zn, As, Cd and Pb from the food
preservative calcium propionate were determined by inductively coupled plasma optical emission spectrometry (ICP-OES).
Samples were dissolved and diluted with 5% (V/V) HNO3 before ICP-OES analysis. Detection wavelength, matrix effects and
plasma parameters were explored and the optimal working conditions for ICP-OES were established. The recovery rates for
spiked samples were between 91.2% and 110.6%, with relative standard deviation less than 3.9%. This method was simple,
sensitive and precise and was successfully applied to simultaneous determination of impurity elements in calcium propionate.

Key words: inductively coupled plasma optical emission spectrometry (ICP-OES), food preservative, calcium propionate, impurity elements