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

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.