Research Center for Inland Seas, Kobe University, 5-1-1 Fukaeminami, Higashinada, Kobe 658-0022, Japan.
Environmental Research and Management Center, Hiroshima University, 1-5-3, Kagamiyama, Higashihiroshima, Hiroshima 739-8513, Japan.
Mar Pollut Bull. 2018 Aug;133:891-899. doi: 10.1016/j.marpolbul.2018.06.042. Epub 2018 Jun 28.
This study aims to reveal spatial distribution of hydrogen sulfide and sulfur species in marine sediments in Hiroshima Bay, Japan, by direct analyses using a combination of detection tubes and X-ray absorption fine structure spectroscopy. In summer and autumn, the hydrogen sulfide concentration ranged from <0.1 to 4 mg-S L. In this study, only hydrogen sulfide was observed in autumn and at two stations in summer. In contrast, some earlier studies reported in all seasons in Hiroshima Bay the presence of acid volatile sulfide, which is used as a proxy of sulfide content. The sulfur species in sediments were mainly identified as sulfate, thiosulfate, elemental sulfur, and pyrite. Thiosulfate was a minor component compared to the other sulfur species. The formation of pyrite and sulfur derived from hydrogen sulfide oxidation played an important role in the scavenging of hydrogen sulfide.
本研究旨在通过使用检测管和 X 射线吸收精细结构光谱法相结合的直接分析方法，揭示日本广岛湾海洋沉积物中硫化氢和硫物种的空间分布。在夏季和秋季，硫化氢浓度范围为<0.1 至 4 mg-S/L。在本研究中，仅在秋季和夏季的两个站位观察到了硫化氢。相比之下，一些早期的研究报告在广岛湾的所有季节都存在酸可挥发性硫，它被用作硫含量的替代物。沉积物中的硫物种主要被鉴定为硫酸盐、硫代硫酸盐、元素硫和黄铁矿。与其他硫物种相比，硫代硫酸盐是一个次要成分。黄铁矿和源自硫化氢氧化的硫的形成在硫化氢的清除中发挥了重要作用。
