Polymermembranen zur Gastrennung

Maier, Gerhard

doi:10.1002/(sici)1521-3757(19981102)110:21<3128::aid-ange3128>3.0.co;2-g

Cited by 15 publications

(1 citation statement)

References 38 publications

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“…However, some pollutants have similar functional groups or polarity. Makrolon ® (Bayer AG, Leverkusen, Germany), the microporous polymer used in this work, shows a micro-sieve effect and therefore allows a discrimination due to different sizes of the analytes [8]. It is a glassy polycarbonate with a mean pore volume of 0.1 nm 3 and a full width at half maximum of 0.04 nm 3 [9].…”

Section: Introductionmentioning

confidence: 99%

Quantification of quaternary mixtures of alcohols: a comparison of reflectometric interference spectroscopy and surface plasmon resonance spectroscopy

Kasper¹,

Busche²,

Dieterle³

et al. 2004

Meas. Sci. Technol.

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In this paper the quantification of quaternary mixtures of the homologous series of the alcohols methanol to n-butanol in the gaseous phase is presented. Time-resolved reflectometric interference spectroscopy (RIfS) and surface plasmon resonance spectroscopy (SPR) are used. An array consisting of two layers of a size-selective microporous polymer (Makrolon ® ) plus the polar polymer polyetherurethan (PUT) is used for RIfS measurements. The time-dependent kinetics of sorption and desorption of the analytes is evaluated by the use of neural networks. As the time-dependent sensor signals differ significantly for each analyte, quantifications with only a single microporous layer are possible. Thus, measurements using a thinner microporous layer for the SPR set-up are also performed, showing faster sorption and desorption. Therefore, measurements can be performed much faster by using the SPR set-up.It can be shown that the quantification of the quaternary mixtures can be successfully performed using a single-sensor set-up for both methods.

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Section: Introductionmentioning

confidence: 99%