微波消解—石墨炉原子吸收光谱法测定牛奶中铅的含量

Microwave Digestion and Graphite Furnace Atomic Absorption Spectrometric Method for the Determination of Lead in Milk

作者研究了用微波消解法对牛奶样品进行前处理,操作简便,减少了操作带来的误差,再用石墨炉原子吸收光谱法测定其中铅的含量。该方法测定的线性范围在0~40ng/mL,相关系数r=0.9998。牛奶样品添加回收率为90%~95%。该方法准确、可靠,而且大大提高了检测效率。

A microwave digestion method was used in treatment of milk samples to determine lead conten.This method has the advantages of simple operation,less error.The lead in treatment solution was detected by atomic absorption spectrometry.The linear range of standardcurve was 0to 40ng/mL and the correlation coefficient was 0.9998.The recovery rates in milk lead were 90%to 95%.This method is not only exact and less error but also improving the detection efficiency.