Mass Spectral Interferences in Glow Discharge Mass Spectrometry and Present Status of Methods for Their Corrections

Mass spectral interferences in glow discharge mass spectrometry,including interferences of isobars,multi-atom ions and multi-charge ions,were introduced in detail.And the present status of correction of mass spectral interferences was reviewed relating to 7 current ways i.e.,① selecting the ono-interferential isotopes;② using instruments with high resolution;③ introducing a collision reaction cell between the ionsource and mass analyzer;④ cooling the ion source with liquid nitrogen;⑤ correction by mathematical method;⑥ change of discharge gas;and ⑦ improving the purity of discharge gas.(68 ref.cited).