Determinação simultânea de cátions empregando eletroforese capilar com detecção condutométrica sem contato em equipamento construído em laboratório

Química Nova

Leandro M. De Carvalho¹  Cristiane Spengler¹  Ana Paula S. De Lima¹  Alice Raabe¹  Mariele Martini¹  Paulo C. Do Nascimento¹  Denise Bohrer¹ 

[1] ,Universidade Federal de Santa Maria Departamento de Química Santa Maria RS ,Brasil

关键词: capillary electrophoresis;    contactless conductivity detection;    cations;   

DOI  :  10.1590/S0100-40422009000800036

来源: SciELO

【 摘 要 】

This work describes the development of a home-made capillary electrophoresis (CE) system based on the capacitively coupled contactless conductivity detection (C4D) for the separation of the metallic species Zn2+, Cr3+, Pb2+, Cd2+, Co2+, Cu2+, Ni2+ e Tl+. A background electrolyte composed of MES/Histidine 0,02 mol L-1 (pH 5.0) was optimized for the separation of the metallic species by using organic solvents and complexing agents as additives. The system allowed the determination of the metallic species using MES/Histidine 0,02 mol L-1 and methanol 5% (pH 5.0) as a background electrolyte, 15 kV separation voltage and hydrodynamic injection by gravity.

【 授权许可】

CC BY-NC   
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