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首页> 外文期刊>The Analyst: The Analytical Journal of the Royal Society of Chemistry: A Monthly International Publication Dealing with All Branches of Analytical Chemistry >An in situ photoelectrochemical determination of hydrogen sulfide through generation of CdS nanoclusters onto TiO _2 nanotubes
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An in situ photoelectrochemical determination of hydrogen sulfide through generation of CdS nanoclusters onto TiO _2 nanotubes

机译：通过在TiO _2纳米管上生成CdS纳米团簇原位光化学法测定硫化氢

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摘要

A novel and facile photoelectrochemical method has been developed to detect H _2S in water samples with high sensitivity and selectivity. The protocol is based on the photocurrent generated by CdS nanoclusters which are deposited onto TiO 2 nanotubes exposing in CdSO _4 solution with the gradual addition of Na _2S, with low-cost, environment-friendly, theoretical and technical simplicity. The developed method shows a very broad linear range from 10 ~(-8) M to 10 ~(-3) M and a low detection limit of 0.31 nM (9.92 ppt), far lower than the ceiling value in drinking water provided by WHO. Furthermore, the present method has been applied for determination of H _2S in water samples. The concentrations of H _2S in water samples determined by the present method are in a good agreement with those monitored by traditional spectrophotometry.
机译：已经开发出一种新颖而简便的光电化学方法，以高灵敏度和高选择性检测水中的H _2S。该协议基于CdS纳米团簇产生的光电流，该团簇沉积在逐步加入Na _2S的CdSO _4溶液中的TiO 2纳米管上，具有低成本，环境友好，理论和技术简便的特点。所开发的方法显示出从10〜（-8）M到10〜（-3）M的非常宽的线性范围，并且检出限低至0.31 nM（9.92 ppt），远低于WHO提供的饮用水最高限值。此外，本方法已用于测定水样中的H _2S。通过本方法测定的水样中H _2S的浓度与传统分光光度法监测的浓度非常吻合。

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