A simple, effective mixing chamber used in conjunction with a syringe pump for flow analysis

作者：Amornthammarong Natchanon; Ortner Peter B; Zhang Jia Zhong^*

来源：Talanta, 2010, 81(4-5): 1472-1476.

DOI：10.1016/j.talanta.2010.02.054

• Mixing chamber
• Mixing coil
• Mixing efficiency
• Syringe pump
• Flow analysis

A simple, effective mixing chamber used in conjunction with a syringe pump for flow analysis is described and evaluated A mixing chamber was constructed using a conventional 5 mL pipette tip and its performance compared with a widely used mixing coil. The results demonstrate that the mixing coil does not rapidly and completely mix solutions Utilizing a configuration that reversed solution positions in the chamber with each mixing cycle, the proposed mixing chamber achieved complete mixing in a significantly shorter time than the mixing coil The influence of injected sample volume on absorbance signals was evaluated by calculating an S(1/2) value for the system. As tested with a minimal rinse, the system has no discernable carryover Testing this new approach in our previously described silicate measurement system resulted in a mole than twofold improvement in sensitivity Published by Elsevier B V

• 出版日期2010-6-15