The use of pressure generated by a water column to control flow rates in flow analysis systems

Química Nova

Universidade Federal de Uberlândia, Uberlândia, Brasil¹  Ceolin, Marselha P.¹  Richter, Eduardo M.¹  Albuquerque, Yaico D. T. de¹  Santos, Wallans T. P. dos¹ 

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

DOI  :  10.1590/S0100-40422007000700044

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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)64- 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】

Unknown