Measurement Method for the Concentration of Hydrogen Sulfide in Pore Water Applying Sensor Part of Undersea Systems

In enclosed sea area, a large amount of organic matter deposit in seabed sediment because rich nutrient through the river causes the massive generation of phytoplankton and seaweeds. As the result, hydrogen sulfide is eluted from the organic-rich sediment and stimulates the additional hypertrophic effect. However, there is an incomplete understanding of a mineralization process from sediment to bottom layer water upper seafloor. The purpose of this study is to develop measurement method for hydrogen sulfide concentration in pore water for undersea systems. The authors propose the new method for absorptiometric analysis of ultraviolet spectrometry spectrum from pore water in sediment using screw cap cell.