火焰原子吸收光谱法测定皮蛋中微量铅

Determination of Micro Pb in Preserved Egg by Flame Atomic Absorption Spectrometry

研究了火焰原子吸收光谱法测定皮蛋中微量铅的方法。样品采用过硫酸铵灰化法消解 ,无需萃取、富集 ,方法灵敏 ,操作简便 ,具有良好的精密度和准确度 ,检出限达 0 0 16μg·mL-1,相对标准偏差 3 2 % ,回收率 94 0 %～ 98 0 %。

The method for the determination of micro Pb in preserved egg by flame atomic absorption spectrometry was studied in this paper. These samples are treated with ammonium persulfate, it is not necessary to preconcentrate the lead by extraction, the method is sensitive, easy to operate and has good precision and accuracy. The detection limit was 0.016 mug(.)mL(-1), the relative standard deviation of Pb was 3.2%, and the rates of recovery were 94.0% - 98.0%.