冷原子吸收法测定空气中硫化氢

Determination of Air Hydrogen Sulfide with Cold Atomic Absorption Spectroscopy

目的 建立更灵敏的测定空气中硫化氢的方法。方法 用过量定量的HgCl2 与S2 -反应 ,冷原子吸收法测定残余汞量 ,从而间接测定空气中硫化氢含量。结果 本方法线性良好 (r =- 0 .9995 ) ,检测下限极低 (即 0 .0 5ug/L) ,精密度、准确度良好。 结论 本方法可用于测定空气中硫化氢。

Objective To explore more sensible methods for the air hydrogen sulfide detection. Methods The cold atomic absorption spectroscopy was used to determine the survival mercury after the reaction between excessive Hgcl 2 and S 2 . Then the concentration of air hydrogen sulfide was determined indirectly. Results This method had good accuracy, precision and correlation (r=0.9995), the minimum detection limit was 0.05ug/L. Conclusions The method could be used to measure the air hydrogen sulfide.