摘要
目的:建立石墨炉原子吸收光谱测定枸橼酸中铝含量的方法。方法:利用0.2%的硝酸对样品进行溶解和稀释,石墨炉原子吸收光谱法测定,检测波长为309.3nm,电流15mA,光谱通带宽度为0.7nm。结果:最低检出限为0.005μg·g-1,重复测定相对标准偏差为1.47%(n=6),平均回收率为93.04%。结论:方法操作简便、准确性高,可用于测定枸橼酸中铝的含量。
Objective：To establish a graphite furnace atomic absorption spectrometry method for determination of Al in cictric acid.Methods： To dissolve and dilute sample with 0.2% nitric acid;Al content was determined by graphite furnace atomic absorption spectrometry.The determined wavelength was at 309.3 nm,the electric current of the light was 15.0 mA,the slitwidth was 0.7 nm.Results：The specific concentration sensitivity was 0.005 μg·g-1;the relative standard deviation was 1.47%（n=6）,and the average recovery was 93.04%.Conclusion：The method is sensitive and accurate,and is suitable for determination of Al in cictric acid.
出处
《药物分析杂志》
CAS
CSCD
北大核心
2010年第3期530-533,共4页
Chinese Journal of Pharmaceutical Analysis
关键词
石墨炉原子吸收光谱法
枸橼酸
铝
graphite furnace atomic absorption spectrometry
cictric acid
aluminium
