期刊
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
卷 26, 期 3, 页码 505-510出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ja00216j
关键词
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资金
- Ministerium fur Innovation
- Wissenschaft
- Forschung und Technologie des Landes Nordrhein-Westfalen
- Bundesministerium fur Bildung und Forschung
- Deutsche Forschungsgemeinschaft
The current research presents a microhollow cathode discharge (MHCD) used as an analytical microplasma gas detector combining the advantages of a hollow cathode geometry in a miniaturized system offering atmospheric pressure operation. The plasma is driven by a homemade resonant radiofrequency generator (f = 1-10 MHz) reducing the electrode sputtering by a factor of 6.5 compared to common direct current operation leading to an extension of the lifetime of the microplasma chip of the same range. This paper aims further for the development of a novel low priced and therefore replaceable MHCD chip exchanging formerly used Pt electrodes by thin Cu electrodes. The analytical performance of the low cost Cu-MHCD with lifetime enhancing radiofrequency operation is demonstrated by atomic emission spectrometry with halogenated hydrocarbons with the Cl emission line at 912.114 nm. This leads to an excellent detection limit of 15 ppb v/v gaseous Cl in He making this microplasma chip suitable for lab on a chip application.
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