Desenvolvimento de um método analítico baseado em microextração líquido-líquido para a determinação de cromo (VI) em amostras aquosas com detecção por espectrometria de absorção atômica em chama

Química Nova

Renata Mior¹  Joyce Nunes Bianchin Dutra¹  Eduardo Carasek¹  Edmar Martendal² 

[1] ,Universidade Federal de Santa Catarina Departamento de Química Florianópolis SC ,Brasil

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

DOI  :  10.1590/S0100-40422013000700004

来源: SciELO

【 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】

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