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首页> 外文期刊>Geochemical Journal >Development of a deep-sea hydrogen sulfide ion sensor and its application for submarine hydrothermal plume exploration
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Development of a deep-sea hydrogen sulfide ion sensor and its application for submarine hydrothermal plume exploration

机译：深海硫化氢离子传感器的研制及其在海底热液羽流勘探中的应用

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A deep-sea hydrogen sulfide ion (HS-) sensor was developed using electrochemical techniques for the direct measurement of hydrogen sulfide ion. In the sensor, linear sweep voltammetry is applied using three simple electrodes, Ag working electrode, Pt counter electrode and Ag/AgCl reference electrode. The measurement times are very small approximately 20 s. The sensor does not require an ion-selective membrane or chemical modification of the electrodes and are suitable for use in the deep-sea environment. In addition, the sensor is encased in a pressure-resistant container, and the electrodes have pressure adjustment functions. As a result, the sensor can withstand the temperature and pressure that exist up to 45 degrees C and at water depths of 5000 m, respectively. With this sensor, it was possible to measure hydrogen sulfide ion levels with a detection limit of 2.2 mu mol/L and a quantification range of 2.2-700 mu mol/L. Field applications of the hydrothermal plume observations in the Mariana Trough and Okinawa Trough clarified the spatial distribution of hydrogen sulfide ion around the hydrothermal vents.
机译：使用电化学技术开发了一种用于直接测量硫化氢离子的深海硫化氢离子（HS-）传感器。在传感器中，使用三个简单电极（Ag工作电极，Pt对电极和Ag / AgCl参比电极）进行线性扫描伏安法。测量时间非常短，大​​约20 s。该传感器不需要离子选择膜或对电极进行化学修饰，适合在深海环境中使用。另外，传感器被封装在耐压容器中，并且电极具有压力调节功能。结果，该传感器可以承受高达45摄氏度和5000 m的水深处的温度和压力。使用该传感器，可以检测极限为2.2μmol/ L，定量范围为2.2-700μmol/ L的硫化氢离子水平。在玛丽安娜海槽和冲绳海槽的热液羽流观测的现场应用阐明了热液喷口周围硫化氢离子的空间分布。

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