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A thermal desorption modulator is comprised of a short length of tubing with some adsorbent or chromatographic stationary phase inside. A flowing stream containing a sample can be introduced into an instrument such as a gas chromatograph through a modulator. The concentration of samples in the flowing stream can be effectively modulated by modulating the temperature of the modulator. The purpose of this study is to demonstrate the application of a thermal desorption modulator in GC/MS.
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Mitra et al. (1988) studied this question.
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