2010•Yaowu fenxi zazhiRequires access

Determination of Al in citric acid by graphite furnace atomic absorption spectrometry

Bao-gui Huang

Abstract

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.

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Key concepts: Chemistry, Graphite furnace atomic absorption, Nitric acid, Citric acid, Graphite, Relative standard deviation, Mass spectrometry, Analytical Chemistry (journal)