期刊
ANALYST
卷 136, 期 22, 页码 4662-4666出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1an15618g
关键词
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资金
- University of Louisville
- CREAM Mass Spectrometry Facility
- NSF/EPSCoR [EPS-0447479]
We report a fabricated microreactor with thousands of micropillars in channels. Each micropillar surface is chemically functionalized to selectively preconcentrate gaseous ketones and aldehydes of exhaled breath and to enhance ultra-trace, rapid analysis by direct-infusion Fourier transform-ion cyclotron resonance (FT-ICR) mass spectrometry (MS). The micropillar reactive coating contains the quaternary ammonium aminooxy salt 2-(aminooxy)ethyl-N,N,N-trimethylammonium iodide (ATM) for capturing trace carbonyl VOCs by means of an oximation reaction. We demonstrate the utility of this approach for detection of C-1 to C-12 aldehydes and ketones in exhaled breath, but the approach is applicable to any gaseous sample.
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