Sulfide in the wastewater was determined by iodimetry via. dissociated to sulfureted hydrogen under the conditions of acidity, adsorbed and created precipitated sulfied.

• 废水中硫化物在酸性条件下游离成硫化氢气体,被吸收液吸收,生成硫化物沉淀,用碘量法测定硫化物含量。