Coprecipitation of trace amounts of silicon with aluminum hydroxide and the determination by flame atomic absorption spectrometry

Química Nova

Gohari, Masoud¹  Shokrollahi, Ardeshir¹  Yasouj University, Yasouj, Iran¹ 

关键词: coprecipitation;    silicon;    aluminum hydroxide;    atomic absorption spectrometry.;   

DOI  :  10.5935/0100-4042.20140253

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

A simple preconcentration method of silicon based on coprecipitation with aluminum hydroxide prior to its flame atomic absorption (FAAS) determination was established. The recovery values of analyte ion was higher than 95%. The parameters including types of hydroxide ion source for precipitation, acid type for dissolution step, amount of aluminum ion as collector, pH, temperature, standing and centrifuge time, and sample volume were optimized for the quantitative recovery of the analyte. The influences of matrix ions were also examined. The relative standard deviation was found to be 3.2%. The limit of detection was calculated as (0.1 mg L-1). The preconcentration factor is 100 for (200 mL) solution. The proposed method was successfully applied for the determination of silicon in some water and alloy samples.

【 授权许可】

Unknown