硫化氢（H２S）是一种可溶性的有毒气体，带有臭鸡蛋气味。在水产养殖业中危害较为严重，当养殖水体中含H２S约０．５毫克／升时可使健康鱼急性中毒死亡，高于０．８毫克／升时引起大批量死亡，在虾蟹育苗水体中危害更为严重，含０．３毫克／升的H２S即引起轻度死亡。笔者曾在 Hydrogen sulfide (H2S) is a soluble toxic gas with a rotten egg smell. In the aquaculture industry is more serious, when the aquaculture water containing about 0.5 mg / L of H2S can make acute poisoning of healthy fish deaths, higher than 0.8 mg / L caused a large number of deaths in the shrimp and crab nursery water In the more serious hazard, containing 0.3 mg / l of H2S that cause mild death. The author was there