Abstract
A Curie-point direct injection probe that can be used as an injector for mass spectrometry is described. The probe consists of an injection probe and a radiofrequency power supply. The pyrolysis section of the injection probe is made of a ceramic and metals without using organic material around the Curie-point pyrolysis section in order to prevent noise development. The power is 48 W at 10 MHz. The temperature rise time and the heating time range of the probe are 0.2 s and 0.1-10 s, respectively. The details of the construction and the evaluation of the injection probe are described. The reproducibility is demonstrated for the thermal degradation of polystyrene and methyl methacrylate copolymer pyrolyzed at 445°C.
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