恒温消解-火焰原子吸收法测定露酒中的铅

Determination of lead in liqueur by constant temperature digestion-FAAS

目的:建立恒温消解-火焰原子吸收法测定露酒中铅的方法。方法:采用恒温消解法对试样进行消解,消解过的试样用火焰原子吸收法测定铅的含量。结果:铅含量在0.00～4.00μg/ml范围内呈线性关系,线性相关系数为0.9998,本法检出限为0.039μg/ml,相对标准偏差0.7%～2.5%,加标回收率在92.0%～97.3%之间。结论:方法简便灵敏,精密度良好,适用于露酒中铅的测定,有实用价值。

Objective：To establish constant temperature digestion-FAAS for determination of lead in liqueur.Methods： Sample was constant temperature digested before the content of lead was determinated by FAAS.Results： The lead in liqueur was liner in the range of 0.00～4.00 μg/ml,the correlation coefficient was 0.9998,the detection limit was 0.039 μg/ml with the relative standard deviation 0.7%～2.5% and the recovery 92.0%～97.3%.Conclusion： The method is simple,sensitive and precise,it is suitable for the determination of lead in liqueur.