广州化学2011，Vol.36Issue(4)：31-35,5.
石墨炉原子吸收光谱法测定食品添加剂磷酸氢二铵中的铅含量
Determination of Lead in the Food Additive Diammonium Hydrogen Phosphate by Graphite Furnace Atomic Absorption Spectrometry
张金玲 1李凯 1田国宁 1孙军 1王亮亮1
作者信息
- 1. 潍坊出入境检验检疫局,山东潍坊261041
- 折叠
摘要
Abstract
The amount of lead in the food additive diammonium hydrogen phosphate was determined by graphite furnace atomic absorption spectrometry. The liner range, the detection limit, recovery rates and degree of precision were also analyzed. The results showed that the detection limit of lead was 0.008 2 μg/g, and the equation of linear regression was y=0.009 lx＋0.006 19. Moreover, the recovery ratio of sample was found to be over 97%. By using same sample preparation method, if fixing the weight of samples as 2.5 g, the relative standard deviation （RSD） for ten experiments was 1.01%. However, if fixing the weight of samples as 0.25 g, the RSD for ten experiments was 6.39%. These results indicated that the degree of precision increases with the sample weight.关键词
石墨炉原子吸收法/磷酸氢二铵：铅含量Key words
graphite fumace atomic absorption spectrometry/diammonium hydrogen phosphate/the amount of lead分类
化学化工引用本文复制引用
张金玲,李凯,田国宁,孙军,王亮亮..石墨炉原子吸收光谱法测定食品添加剂磷酸氢二铵中的铅含量[J].广州化学,2011,36(4):31-35,5.
