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

Quimica nova

Fathi, Mohammad Reza¹  Ardan, Zeinab¹  Pourreza, Nahid¹ 

[1] Shahid Chamran University, Ahvaz, Iran

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 preconcentrationprocedure for spectrophotometeric determination of aluminum was developed. Aluminumas aluminon complex is adsorbed on microcrystalline naphthalene. The naphthalenecontaining the complex is dissolved in 3 mL of acetone and its absorbance ismeasured at 544 nm. The effect of various factors on the preconcentration ofaluminum was investigated. The calibration graph was linear in the range of1-60 mg L-1. The limit of detection was0.52 mg L-1 and relative standard deviationfor the determination of 5 mg L-1 was2.65%. The proposed solid phase extraction procedure was applied to determinationof aluminum in food samples.

【 授权许可】

CC BY