硫化物与二氧化硫的分离与测定

Separation and Determination of S 2- and SO 2

用连续进样预富集分离硫化物与二氧化硫， 并用分子吸收光谱进行测定． 考察各实验参数对测定结果的影响．

An on line separation method for H 2S and SO 2 is proposed in this paper. Continuous flow sample introduction with a peristaltic pump was used The SO 2 and H 2S were absorbed in the BaCl 2 and NaOH solutions, respectively, and the S 2- and SO 2- 3 can be determined separately. The experimental conditions were examined in detail The detection limit for the determination of SO 2 and S 2- were 0 08 μg/mL, 0 02 μg/mL, respectively. A synthetic sample containing SO 2- 3 and S 2- was analyzed and the results obtained were satisfactory.