Preconcentration, determination and speciation of iron by solid-phase extraction using dimethyl (E)-2-[(Z)-1-acetyl)-2-hydroxy-1-propenyl]-2-butenedioate

Química Nova

Zolali, Amin¹  Khayatian, Gholamreza¹  University of Kurdistan, Sanandaj, Sanandaj, Iran¹  Nasiri, Farough¹  Hassanpoor, Shahed¹ 

关键词: speciation;    iron;    solid-phase extraction.;   

DOI  :  10.1590/S0100-40422012000300018

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

A new sensitive and selective procedure for speciation of trace dissolved Fe(III) and Fe(II), using modified octadecyl silica membrane disks and determination by flame atomic absorption spectrometry was developed. A ML3 complex is formed between the ligand and Fe(III) responsible for extraction of metal ion on the disk. Various factors influencing the separation of iron were investigated and the optimized operation conditions were established. Under optimum conditions, an enrichment factor of 166 was obtained for Fe3+ ions. The calibration graph using the preconcentration system for Fe3+ was linear between 40.0 and 1000.0 μg L-1.

【 授权许可】

Unknown