Development of deep sea sensor for resources exploration and measurement of sulfur compounds using the chemiluminescence method

硫化氢具有很强的还原能力，不能随氧气一起逸出。在热液喷口和贫氧水圈附近，由于存在硫化氢的排放源，因此硫化氢在这些地区都有分布。由于日本工业依赖进口资源，深海热液喷口周围的一个矿藏存款有望成为新的稀土供应源。很少有分析仪器可用于深海水的测量。建立了稀土配合物敏化化学发光还原硫化物的分析方法。

Hydrogen sulfide can not exit with oxygen because of the strong reducing ability. Hydrogen sulfide can be found around the places as hydrothermal vent and poor oxygen hydrosphere, because these areas have the emitter of hydrogen sulfide. A mineral deposit around hydrothermal vent in deep sea is expected as new supplier of rare-earths, because Japanese industry depends on import of resources. Few analytical apparatus can be applied for measurement of deep sea water. We developed the analytical method of reducing sulfur compounds for research of the hydrothermal vent using the sensitized chemiluminescence of rare-earth complex.