Determination of Aluminum in Food Samples after Preconcentration as Aluminon Complex on Microcrystalline Naphthalene by Spectrophotometry
نویسندگان
چکیده
A sensitive preconcentration procedure for spectrophotometeric determination of aluminum was developed. Aluminum as aluminon complex is adsorbed on microcrystalline naphthalene. The naphthalene containing the complex is dissolved in 3 mL of acetone and its absorbance is measured at 544 nm. The effect of various factors on the preconcentration of aluminum was investigated. The calibration graph was linear in the range of 1-60 μg L. The limit of detection was 0.52 μg L and relative standard deviation for the determination of 5 μg L was 2.65%. The proposed solid phase extraction procedure was applied to determination of aluminum in food samples.
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