Electron capture detector based on a non-radioactive electron source: Operating parameters vs. Analytical performance

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Bunert, E.; Kirk, A.T.; Oermann, J.; Zimmermann, S.: Electron capture detector based on a non-radioactive electron source: Operating parameters vs. Analytical performance. In: Journal of Sensors and Sensor Systems 6 (2017), Nr. 2, S. 381-387. DOI: https://doi.org/10.5194/jsss-6-381-2017

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Gas chromatographs with electron capture detectors are widely used for the analysis of electron affine substances such as pesticides or chlorofluorocarbons. With detection limits in the low pptv range, electron capture detectors are the most sensitive detectors available for such compounds. Based on their operating principle, they require free electrons at atmospheric pressure, which are usually generated by a β- decay. However, the use of radioactive materials leads to regulatory restrictions regarding purchase, operation, and disposal. Here, we present a novel electron capture detector based on a non-radioactive electron source that shows similar detection limits compared to radioactive detectors but that is not subject to these limitations and offers further advantages such as adjustable electron densities and energies. In this work we show first experimental results using 1,1,2-trichloroethane and sevoflurane, and investigate the effect of several operating parameters on the analytical performance of this new non-radioactive electron capture detector (ECD). © Author(s) 2017.
License of this version: CC BY 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2017
Appears in Collections:Fakultät für Elektrotechnik und Informatik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 74 64.35%
2 image of flag of United States United States 15 13.04%
3 image of flag of China China 12 10.43%
4 image of flag of Czech Republic Czech Republic 3 2.61%
5 image of flag of Malaysia Malaysia 2 1.74%
6 image of flag of Egypt Egypt 2 1.74%
7 image of flag of Canada Canada 2 1.74%
8 image of flag of Jordan Jordan 1 0.87%
9 image of flag of Hungary Hungary 1 0.87%
10 image of flag of Austria Austria 1 0.87%
    other countries 2 1.74%

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