Determination on the Trace Elements in Preserved Vegetable by Atomic Absorption Spectrometry

[Objective] The study aimed to determine the trace elements in preserved vegetable by atomic absorption spectrometry.[Method] With self-made preserved vegetables in Lishui City in Zhejiang Province as tested samples,it was tested by wet digestion and 8 kinds of trace element including the contents of Ca,Mg,Fe,Mn,Zn,Cu,Pb and Cd in preserved vegetable were determined by atomic absorption.[Result] The correlation coefficient of standard curve by atomic absorption spectrometry was 0.997 4-0.999 5,the relative standard deviation(RSD) was 0.36%-2.80% and the recovery was 96.16%-105.56%.The determination showed that contents of Ca,Mg,Fe,Mn,Zn,Cu,Pb and Cd in the samples of preserved vegetable were 0.653,10.687,42.152,707.519,17.786,14.330,0 and 0.425 μg/kg resp.The order of trace element content was Ca Fe Mg Mn Zn Cu Cd Pb.[Conclusion] In preserved vegetable,there was a lot of Ca and the content of Fe was higher;the content of Ca didn't exceed the national limit stabdar and Pb didn't be detected out,proving that the contents of trace elements in preserved vegetable fully accorded the national safe standard and the preserved vegetable could be edible at ease.