通过HNO3-HClO4混合酸消解样品,采用火焰原子吸收光谱法测定马氏珠母贝与企鹅珍珠贝中镉的含量。在最佳试验条件下,线性范围为0.05—1.00μg/mL,相关系数r=0.9998,检出限为0.00686μg/mL,测定结果的相对标准偏差均小于3%(n=6),加标回收率结果在96.77%—103.89%之间。该方法简便、快速,灵敏度高,准确性好,结果令人满意。 The samples were digested with mixed acid of HNO3-HClO4, and the content of cadmium in the shellfish and penguin shellfish was determined by flame atomic absorption spectrometry. Under the optimal experimental conditions, the linear range was 0.05-1.00μg / mL, the correlation coefficient was 0.9998, the detection limit was 0.00686μg / mL, and the relative standard deviations were less than 3% (n = 6) The recovery rate was between 96.77% -103.89%. The method is simple, rapid, sensitive, accurate and satisfactory.