压力自控微波消解-石墨炉原子吸收光谱法测定鹅肝中的镉

Microwave Airtight Digestion and Atomic Absorption Spectrophotometric Analysis of Cadmium in Goose Liver

利用压力自控微波密闭消解-石墨炉原子吸收光谱法测定鹅肝中镉,在固定微波输出功率600W及阶梯升压方式加热、加压条件下,分析样与混酸充分混合,快速分解,减少了分析液引入污染的机会。方法的检出限0.36μg/mL,变异系数为3.03%,回收率为97.09%～100.86%。本方法实际样品分析,简快、准确结果满意。

Goose liver was digested with mixed acids by a microwave system under a gradient pressure program at a power output of 600 W to determine the content of cadmium by an atomic absorption spectrometry method.The limit of detection was 0.36μg/mL,the precision RSD of 5 replicate determinations was 3.03%,and the spike recoveries in 5 samples were between 97.09%and 100.86%.This method may reduce the sample contamination problem effectively due to thorough exposure of samples to mixed acid for rapid digestion in an airtight environment,and is simple,convenient,quick and accurate.