原子荧光光谱法测定动物肝中微量砷

Determination of Arsenic in Animal Liver by Atomic Fluorescence Spectrometry

建立了测定动物肝中微量砷的原子荧光光谱方法 ,方法灵敏度高 ,准确度好。在选定的试验条件下 ,荧光强度与砷浓度在 0～ 16 0ng·mL- 1 范围内成线性关系 ,相关系数r =0 9996 ,检出限 0 4ng·mL- 1 ,回收率 94 2 %～ 98 5 % ,相对标准偏差不超过 4 6 %。

An atmoic Fluorescence spectrometry for the determination of micro arsenic in animal liver was developed with high sensitivity and fine accuracy. Under the selected experimental conditions, there was a linear relationship,,hip between the fluorescence intensity and arsenic concentration in the range of 0-160ng (.) mL(-1) with correlation coefficient of 0.9966. The limit of detection was 0.4ng (.) mL(-1), and the recovery was 94.2%-98.5%.