Determination of Pb and Cd Content in Green Plum by Graphite Furnace Atomic Absorption Spectrometry
Six samples were collected from different green plum producing areas in Eryuan county,Dali prefecture,Yunnan province,and the contents of lead and cadmium in green plum were determined by atomic absorption spectrometry graphite furnace method.The results showed that the linear relationship between the two heavy metal elements was good in a certain concentration range,and the correlation coefficient was greater than 0.999 3,and the detection limits of lead and cadmium were 1.83 μg·L-1、0.027 μg·L-1,the recovery rate of spike was 93.64%to 95.87%.There was little difference in the content of lead and cadmium in green plum from different origins,and the lead content was greater than that of cadmium,and the lead and cadmium content of the six samples were lower than the limit values in GB 2762-2017.
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万方数据
