Liquid-sheath-flow electrospray ionization feasibility study of direct water analysis with the use of high-resolution ion-mobility spectrometry
| Autor: | Wes E. Steiner, Herbert H. Hill, Laura M. Matz, William F. Siems, Brian H. Clowers |
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| Rok vydání: | 2001 |
| Předmět: |
Electrospray
Desorption electrospray ionization Chromatography Chemistry Ion-mobility spectrometry Electrospray ionization Analytical chemistry Extractive electrospray ionization Mass spectrometry Analytical Chemistry Ionization Environmental Chemistry Direct electron ionization liquid chromatography–mass spectrometry interface Instrumentation General Environmental Science |
| Zdroj: | Field Analytical Chemistry & Technology. 5:91-96 |
| ISSN: | 1520-6521 1086-900X |
| Popis: | Ion-mobility spectrometry (IMS) in conjunction with radioactive ionization sources has been employed for field-portable applications for the past two decades. Recently, electrospray ionization (ESI) sources have been shown as a viable ionization source with IMS in- struments, enablingthe analysis of many nonvolatile compounds. Introduction of a liquid-sheath-flow ESI source enabled the direct analysis of water samples. The ESI source was built with relatively simple lightweight components, makingit feasible for use in field applica- tions. A comparison between traditional ESI solvent con- ditions (water plus organic solvent) and the liquid- sheath-flow concept shows the new source to be able to spray water samples directly without prior sample prep- aration. The novel electrospray ionization source was evaluated with two nonfiltered water samples, one from a snow sample and the other obtained from a local stream. In both cases, 1 ppm of Terbutryn (a widely used herbicide) was easily detected. 2001 John Wiley & Sons, Inc. Field Analyt Chem Technol 5: 91-96, 2001 |
| Databáze: | OpenAIRE |
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