Trace determination of sulphide and sulphur dioxide by vapor molecular absorption spectrometry using magnesium and tellurium hollow cathode lamps.
A new method has been developed in this paper for determining sulphide and sulphur dioxide simultaneously. Two emission lines, 202.6 nm and 214.3 nm which are emitted from hollow cathode lamps (HCL) of magnesium and tellurium, respectively, were used as radiation sources for measurement of absorbances of H(2)S at 202.6 nm and SO(2) at 214.3 nm or 202.6 nm. The detection limit for S(2-) was shown to be 0.01 mug/ml and the detection limits for SO(2) with 202.6 nm and 214.3 nm lines were 0.05 and 0.2 mug/ml, respectively. The method has been employed to satisfactorily analyse practical samples.
Qinhan Jin
Department of Chemistry, Jilin University, Changchun, 130023, People's Republic of China.
Hanqi Zhang
Yixiang Duan
Aimin Yu
Xinwei Liu
Lishuang Wang