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Modular pyrolysis inlet and method for pyrolyzing compounds for analysis by mass spectrometer
Modular pyrolysis inlet and method for pyrolyzing compounds for analysis by mass spectrometer
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机译：模块化热解入口和热解化合物的质谱分析方法
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摘要
A modular pyrolysis inlet apparatus and method for pyrolyzing compounds preparatory to an analysis thereof by a mass spectrometer. The pyrolysis inlet includes a telescopic insertion probe having a ferromagnetic wire bearing the sample to be analyzed, and a reaction chamber mounted to the insertion probe so as to encompass the wire and sample. The insertion probe/reaction chamber assembly is inserted into the pyrolysis inlet apparatus and the voids surrounding the assembly are evacuated. The sample is cooled at a first position within the reaction chamber while a heating mantle preheats the reaction chamber at a second position therein. The telescopic insertion probe/reaction chamber assembly is then inserted further into the pyrolysis inlet, moving the sample to the second heated position within the reaction chamber. At the second position, a high frequency coil is activated to energize and heat the wire, and rapidly pyrolyze the sample thereon. The volatile pyrolysis products escape from the reaction chamber and enter a modular expansion chamber. The volatile pyrolysis products are delayed for a moment within the expansion chamber and then introduced directly into a mass spectrometer for subsequent analysis.
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