Determination of aluminum in food samples after preconcentration as aluminon complex on microcrystalline naphthalene by spectrophotometry

Química Nova

Ardan, Zeinab¹  Fathi, Mohammad Reza¹  Shahid Chamran University, Ahvaz, Iran¹  Pourreza, Nahid¹ 

关键词: aluminum;    preconcentration;    food samples.;   

DOI  :  10.1590/S0100-40422011000300007

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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 mg L-1. The limit of detection was 0.52 mg L-1 and relative standard deviation for the determination of 5 mg L-1 was 2.65%. The proposed solid phase extraction procedure was applied to determination of aluminum in food samples.

【 授权许可】

Unknown