Uso da pressão gerada por uma coluna de água para controle da vazão em sistemas de análises em fluxo

Química Nova

Wallans T. P. Dos Santos¹  Marselha P. Ceolin¹  Yaico D. T. De Albuquerque¹  Eduardo M. Richter¹ 

[1] ,Universidade Federal de Uberlândia Instituto de Química Uberlândia MG ,Brasil

关键词: flow rates control;    water column;    flow analysis;   

DOI  :  10.1590/S0100-40422007000700044

来源: SciELO

【 摘 要 】

This work presents a new approach to control the flow rate in hydrodynamic flow experiments. The combination of air pressure generated by an aquarium air pump and the pressure generated by a water column were used for this purpose. This device supports a stable flow rate without pulsation for a long period of time. Furthermore, the flow rate can be easily controlled at various values in one or more streams. The performance of this approach was investigated using Fe(CN)6(4-) solutions in flowing systems using amperometric and voltammetric detection in wall-jet configuration. The results showed that the performance of the proposed device was better than a commercial peristaltic pump. It suggests that this approach can be used successfully in flow analysis systems.

【 授权许可】

CC BY-NC   
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