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The concentration of propofol in patient's exhaled air is an indicator of the anesthetic depth. In the present study, a membrane inlet ion mobility spectrometer (MI-IMS) was built for the on-line measurement of propofol. Compared with the direct sample introduction, the membrane inlet could eliminate the interference of moisture and improve the selectivity of propofol. Effects of membrane temperature...
A sensor array system consisting of five quartz crystal microbalance (QCM) sensors (four for measuring and one for reference) and an artificial neural network (ANN) method is presented for on-line detection of volatile organic compounds. Three ionic liquids, 1-butyl-3-methylimidazolium chloride (C 4 mimCl), 1-butyl-3-methylimidazolium hexafluorophosphate (C 4 mimPF 6 ), 1-dedocyl-3-methylimidazolium...
The electron energies were measured to investigate the influences of laser intensity and wavelength on the ion charge state distribution of C q+ (q=2–4) when benzene clusters were irradiated by 10 9 –10 11 W/cm 2 nanosecond laser pulses. The results show that the ratios of C q+ /C (q−1)+ strongly depend on laser wavelength but slightly...
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