2012•Chemical ReagentsRequires access
Determination of copper and cadmium in infant cereal by microwave digestion-graphite frnace atomic absorption spectrometry
XU Wei-feng
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Abstract
A method has been established for the determination of copper and cadmium in infant cereal by microwave digestion-graphite furnace atomic absorption spectrometry(GFAAS),and the optimum conditions of determination by GFAAS were established.Under the optimized experimental conditions,the detection limits of the method were 0.51 ng/mL and 0.14 ng/mL for Cu and Cd,and the relative standard deviations(RSDs) were 4.3% for Cu and 3.2% for Cd(n=7,ρCu=25 ng/mL,ρCd=2.0 ng/mL).The developed technique was applied to the determination of Cu and Cd in real infant cereal samples with satisfactory results.It was also verified by analysis of a biological reference material(GBW10010) and the determined values were coincided with the certified values very well.