论文部分内容阅读
硫化氢(H_2S)主要来自生产过程或日常生活中产生的废气。硫化氢是有强烈的臭蛋气味的无色气体。易溶于水,生成氢硫酸(一种弱酸)。溶于醇类、甘油、石油制品中。化学性质不稳定,在空气中容易燃烧及爆炸。硫化氢对铁等金属有强腐蚀性,也易吸附于各种织物。与许多金属离子作用,生成不溶于水或酸的硫化物沉淀。硫化氢用于分离和鉴定金属离子、精制盐酸和硫酸(除去重金属离子)以及制元素硫等。
Hydrogen sulfide (H 2 S) mainly comes from the exhaust gas produced in the production process or daily life. Hydrogen sulfide is a colorless gas with a strong foul smell. Soluble in water, generating hydrogen sulfate (a weak acid). Soluble in alcohols, glycerol, petroleum products. Chemical instability, easy to burn in the air and explosion. Hydrogen sulfide on iron and other metals are highly corrosive, but also easy to adsorb on a variety of fabrics. With many metal ions, generate insoluble in water or acid sulfide precipitation. Hydrogen sulfide for the separation and identification of metal ions, refined hydrochloric acid and sulfuric acid (remove heavy metal ions) and the system elemental sulfur.