摘要
目的：本文着重研究利用石墨炉原子吸收光谱法测定膨化食品中铝，对测定条件进行优化选择，达到快速、准确的目的。方法：利用混合酸对样品进行消化处理，镁作为基体改进剂，石墨炉原子吸收光谱法测定。结果：在实验条件下，方法最低检出限为3．4×10^-11，当食品中铝浓度为0．30mg／kg时，重复测定相对标准偏差小于10％，平均回收率为95％～108％。结论：对于膨化食品中铝的测定有选择性好、灵敏度高的特点，并有较高的回收率，可作为日常检测使用。
Objective. This disquisition investigates determination of aluminium in puffed food by graphite furnace atomic absorption spectrometry. Methods：Pretest samples using mixed acid, and magnesium was adopted as matrix modifier to determine by graphite furnace atomic absorption spectrometry. Results： The lowest detection limit of the method was 3.4 - 10^-11 g, the relative standard deviation was less than 10% （the amount of aluminium was 0. 30 mg/kg） , and the average recovery was 95% - 108%. Conclusion：The method is sensitive and selective, has higher recovery, and is suitable for daily determination.
出处
《中国卫生检验杂志》
CAS
2007年第3期442-443,共2页
Chinese Journal of Health Laboratory Technology
关键词
石墨炉原子吸收光谱法
膨化食品
铝
Graphite furnace atomic absorption spectrometry
Puffed food
Aluminium
