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Titolo:
Minimizing analyte electrolysis in an electrospray emitter
Autore:
Kertesz, V; Van Berkel, GJ;
Indirizzi:
Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37381 USA Oak Ridge Natl Lab Oak Ridge TN USA 37381 yt Sci, Oak Ridge, TN 37381 USA
Titolo Testata:
JOURNAL OF MASS SPECTROMETRY
fascicolo: 2, volume: 36, anno: 2001,
pagine: 204 - 210
SICI:
1076-5174(200102)36:2<204:MAEIAE>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
IONIZATION MASS-SPECTROMETRY; RADICAL CATIONS; REDOX REACTIONS; COUPLED ONLINE; GAS-PHASE; CELL; METALLOCENES; ANILINE;
Keywords:
electrospray mass spectrometry; electrolysis; oxidation; stainless-steel emitter; platinum emitter; fused-silica emitter;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Van Berkel, GJ Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37381 USA Oak Ridge Natl Lab Oak Ridge TN USA 37381 ge, TN 37381 USA
Citazione:
V. Kertesz e G.J. Van Berkel, "Minimizing analyte electrolysis in an electrospray emitter", J MASS SPEC, 36(2), 2001, pp. 204-210

Abstract

The electrospray (ES) ion source is a controlled-current electrolytic now cell. Electrolytic reactions in the ES emitter capillary are continually ongoing to sustain the production of charged droplets and ultimately gas-phase ions from this device. Under certain circumstances, the analytes under study may be directly involved in these electrolytic processes. It is demonstrated that a simple means to minimize analyte electrolysis is to exchange the normal metal emitter capillary of commercial ES sources with one made offused silica. This change is shown to provide an ES mass spectrometric system of similar performance in terms of gas-phase ion signal generated for non-electroactive analytes and also assures minimal oxidation of electroactive analytes even at low (2.0 mul min(-1)) solution flow-rates and high (millimolar) solution electrolyte concentrations.

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Documento generato il 05/04/20 alle ore 09:21:01