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12748 Integrated microfluidic system enabling (bio)chemical reactions with on-line MALDI-TOF mass spectrometry
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Brivio, M. and Fokkens, R.H. and Verboom, W. and Reinhoudt, D.N. and Tas, N.R. and Goedbloed, M.H. and van den Berg, A. (2002) Integrated microfluidic system enabling (bio)chemical reactions with on-line MALDI-TOF mass spectrometry. Analytical chemistry, 74 (16). pp. 3972-3976. ISSN 0003-2700 *** ISI Impact 5,856 ***

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Official URL: http://dx.doi.org/10.1021/ac020185n

Abstract

A continuous flow micro total analysis system (μ-TAS) consisting of an on-chip microfluidic device connected to a matrix assisted laser desorption ionization [MALDI] time-of-flight [TOF] mass spectrometer (MS) as an analytical screening system is presented. Reaction microchannels and inlet/outlet reservoirs were fabricated by powderblasting on glass wafers that were then bonded to silicon substrates. The novel lab-on-a-chip was realized by integrating the microdevice with a MALDI-TOFMS standard sample plate used as carrier to get the microfluidic device in the MALDI instrument. A novel pressure-driven pumping mechanism using the vacuum of the instrument as a driving force induces flow in the reaction microchannel in a self-activating way. Organic syntheses as well as biochemical reactions are carried out entirely inside the MALDI-MS ionization vacuum chamber and analyzed on-line by MALDI-TOFMS in real time. The effectiveness of the μ-TAS system has been successfully demonstrated with several examples of (bio)chemical reactions.

Item Type:Article
Research Group:EWI-TST: Transducers Science and Technology, EWI-BIOS: Biomedical and Environmental Sensorsystems, TNW-SMCT: Supramolecular Chemistry and Technology
Research Program:MESA-MiCS: Micro Chemical Systems
Research Project:Micro- and Nanofluidic devices and networks
ID Code:12748
Status:Published
Deposited On:01 July 2008
Refereed:Yes
International:Yes
ISI Impact Factor:5,856
More Information:statistics

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