The development of a high temperature ion mobility, spectrometer is described for interfacing to chromatographic techniques, in particular, gas chromatography and high‐performance liquid chromatography. The performance of the system is assessed by measuring ion mobility constants for both positive and negative ions. The sensitivity of the detector was determined and found to allow the detection of trace components down to tens of picogrammes (pg) for halogenatcd compounds, in the negative‐ion mode of operation. Standard mixtures of potychlorinated biphenyls (PCB s ) were studied by gas chromatography/ion mobility Spectrometry with the aim of quantitating extracts of soil samples. A novel method of interfacing to liquid chromatography has been evaluated using a membrane separator of large surface area and high efficiency for removing the mobile phase. Preliminary data for liquid chromatocraphy/ion mobility spectrometry is reported.
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Jones et al. (1993) studied this question.
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