硫化氢,是硫与氢的最简单的化合物,在天然气地球化学中占据着特殊的位置,而它的形成和进一步变化,是在地壳中发生的最为大量而重要的作用过程之一。“地球表面上H_2S的形成,与地球上CO_2的析出一样,都为生命物质所必需的”。硫化氢在地壳中的巨大作用,取决于其特殊的活性,因此硫化氢的保存首先需要有适当的条件,从而也造成它在自然界中的分布极不固定。众所周知,硫化氢是一种强还原剂,很容易在溶液中或在空气中氧化成游离硫。天然气中 Hydrogen sulfide, the simplest compound of sulfur and hydrogen, occupies a special place in natural gas geochemistry. Its formation and further changes are one of the most significant and important processes in the crust. “The formation of H 2 S on Earth’s surface, just as the precipitation of CO 2 on Earth, is necessary for living matter.” Hydrogen sulfide in the crust of the great role, depending on its special activity, so the preservation of hydrogen sulfide first need to have the appropriate conditions, which also resulted in its distribution in nature is not fixed. It is well-known that hydrogen sulfide is a strong reducing agent and is easily oxidized to free sulfur in solution or in the air. Natural gas