The invention relates to a
heat flow sublimation sample introduction
system and method.The
heat flow sublimation sample introduction
system comprises a
gas supply module, a sublimation chamber, a
gas mixing chamber and a sample transmission module, the
gas supply module is connected with gas inlets of the sublimation chamber and the
gas mixing chamber, a gas outlet of the sublimation chamber is connected with a gas inlet of the
gas mixing chamber, and a gas outlet of the gas
mixing chamber is connected with a gas outlet of the sample transmission module; a gas outlet of the gas
mixing chamber is connected with a sample transmission module, and the sample transmission module is connected with analysis and detection equipment. A
gas heater is used for heating carrier gas, the flow rate of high-temperature gas flowing through each sublimation chamber is controlled, each standard substance and a sample to be detected are sublimated into gaseous materials with different flow rates respectively, the gaseous materials are fully mixed through a gas
mixing chamber and then enter analysis and detection equipment, element response values are measured, sample
digestion is not needed, the sample introduction flux is stable and controllable, the detection time is short, and the detection efficiency is high. The method has the advantages of convenience, rapidness, high sensitivity and less
impurity introduction, and is suitable for accurate detection of impurities in easily sublimated
solid samples.