期刊论文详细信息
Química Nova | |
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 | |
Eduardo Carasek1  Joyce Nunes Bianchin Dutra1  Renata Mior1  Edmar Martendal2  | |
[1] Universidade Federal de Santa Catarina;Universidade do Estado de Santa Catarina; | |
关键词: hexavalent chromium; liquid-liquid microextraction; F AAS; | |
DOI : 10.1590/S0100-40422013000700004 | |
来源: DOAJ |
【 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