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Determination of sulfide with acidic permanganate chemiluminescence for development of deep-sea in-situ analyzers.

by Keiichi Fujimori, Kenta Tsujimoto, Takayo Moriuchi-Kawakami, Yasuhiko Shibutani, Masato Ueda, Takahiko Suzue, Hideshi Kimoto, Kei Okamura
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry ()

Abstract

A new chemiluminescence method is proposed for the determination of sulfide in seawater based on the chemiluminescence reaction between sulfide and an acidic permanganate solution. 3-Cyclohexylaminopropanesulfonic acid was used as a chemiluminescence enhancer. By use of this method, 1-150 µM of sulfide could be determined in artificial seawater. The limit of detection was 0.17 µM sulfide. We investigated the effects of salinity, water temperature, and interfering chemicals such as heavy-metal ions and organic matter. In addition, natural seawater spiked with sulfide was analyzed. The results showed that the CL method could be applied to a deep-sea sulfide analyzer.

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