一种用于检测六价铬浓度的层流微流体燃料电池。
A laminar flow microfluidic fuel cell for detection of hexavalent chromium concentration.
作者信息
Ye Dingding, Yang Yang, Li Jun, Zhu Xun, Liao Qiang, Zhang Biao
出版信息
Biomicrofluidics. 2015 Nov 25;9(6):064110. doi: 10.1063/1.4936642. eCollection 2015 Nov.
An electrochemical hexavalent chromium concentration sensor based on a microfluidic fuel cell is presented. The correlation between current density and chromium concentration is established in this report. Three related operation parameters are investigated, including pH values, temperature, and external resistance on the sensor performance. The results show that the current density increases with increasing temperature and the sensor produces a maximum regression coefficient at the catholyte pH value of 1.0. Moreover, it is found that the external resistance has a great influence on the linearity and current densities of the microfluidic sensor. Owing to the membraneless structure and the steady co-laminar flow inside the microchannel, the microfluidic sensor exhibits short response time to hexavalent chromium concentration. The laminar flow fuel cell sensor provides a new and simple method for detecting hexavalent chromium concentration in the industrial wastewater.
介绍了一种基于微流控燃料电池的电化学六价铬浓度传感器。本报告建立了电流密度与铬浓度之间的相关性。研究了三个相关操作参数，包括pH值、温度和外部电阻对传感器性能的影响。结果表明，电流密度随温度升高而增加，传感器在阴极电解液pH值为1.0时产生最大回归系数。此外，发现外部电阻对微流控传感器的线性度和电流密度有很大影响。由于无膜结构和微通道内稳定的共层流，微流控传感器对六价铬浓度的响应时间较短。层流燃料电池传感器为检测工业废水中的六价铬浓度提供了一种新的简单方法。
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