STUDY ON THE LOWERING OF DETECTION LIMITS IN GLOW DISCHARGE MS ANALYSIS OF HIGH-PURITY GALLIUM

Aiming to the lowering of detection limits in glow discharge mass spectrometric analysis of high-purity gallium,taking the determination of calcium,tin and mercury as testing objects,parameter variables such as the increase of the diameter of the sample cubes,the appropriate lowering of working resolving power,the increase of times of scanning and the increase of time of integration etc,were studied in detail and satisfactory results were obtained.