Development of an analytical method for the determination of hexavalent chromium in water samples based on liquid-liquid microextraction with detection by flame atomic absorption spectrometry

Química Nova

Dutra, Joyce Nunes Bianchin¹  Universidade Federal de Santa Catarina, Florianópolis, Brasil¹  Universidade do Estado de Santa Catarina, Joinville, Brasil¹  Martendal, Edmar¹  Mior, Renata¹  Carasek, Eduardo¹ 

关键词: hexavalent chromium;    liquid-liquid microextraction;    F AAS.;   

DOI  :  10.1590/S0100-40422013000700004

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this study, a method for determination of hexavalent chromium in aqueous samples using liquid-liquid microextraction (LLME) and detection by Flame Atomic Absorption Spectrometry (F AAS) was developed. The LLME procedure was based on the extraction of Cr (VI) by acetone at a sample pH of 1.2. The use of saturated ammonium sulphate solution allowed effective separation of the aqueous and organic phases and acetone extracted chromium. The sample pH, acetone volume and stirring time were optimized by a full factorial design.

【 授权许可】

Unknown