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The mediated detection of hydrogen sulfide in room temperature ionic liquids

机译：室温离子液体中硫化氢的介导检测

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The detection of H_2S was studied using several mediators in room temperature ionic liquids (RTILs) at a microelectrode. Each mediator was characterised voltammetrically, and H_2S was added to observe if any mediation took place. A successful mediator was 3,5-tert-butyl-obenzoquinone. Cyclic voltammetry was carried out in [C2mim]-[NTf2]. A reductive wave was observed and attributed to the two-electron reduction of the mediator. No oxidative signal was observed. H_2S was flowed through the system. Cyclic voltammograms showed a decrease in the reductive wave of the mediator and the onset of an oxidative signal due to the reaction between the mediator and H_2S to form an adduct. This reaction is reversible and on purging the system with N_2, the original reductive signal of the mediator was recovered.
机译：使用几种介体在微电极上的室温离子液体（RTIL）中研究了H_2S的检测。用伏安法对每种介体进行表征，并加入H_2S以观察是否发生了任何介导。一个成功的介体是3,5-叔丁基-邻苯醌。循环伏安法在[C2mim]-[NTf2]中进行。观察到还原波，并且归因于介体的双电子还原。没有观察到氧化信号。 H_2S流入系统。循环伏安图显示，由于介体与H_2S之间形成加合物的反应，介体还原波的减少和氧化信号的开始。该反应是可逆的，并且在用N_2吹扫系统时，回收了介体的原始还原信号。

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