Electrolyte system strategies for anionic isotachophoresis with electrospray-ionization mass-spectrometric detection. 1. Regular isotachophoresis and free-acid isotachophoresis
Jazyk angličtina Země Německo Médium print-electronic
Typ dokumentu hodnotící studie, časopisecké články, práce podpořená grantem
PubMed
23925830
DOI
10.1002/elps.201300292
Knihovny.cz E-zdroje
- Klíčová slova
- Diclofenac, ESI-MS detection, Ibuprofen, Isotachophoresis, Water analysis,
- MeSH
- anionty chemie MeSH
- antiflogistika nesteroidní analýza MeSH
- diklofenak analýza MeSH
- elektroforéza kapilární MeSH
- elektrolyty chemie MeSH
- hmotnostní spektrometrie s elektrosprejovou ionizací metody MeSH
- ibuprofen analýza MeSH
- izotachoforéza metody MeSH
- kyseliny chemie MeSH
- limita detekce MeSH
- neopioidní analgetika analýza MeSH
- pitná voda analýza MeSH
- řeky chemie MeSH
- Publikační typ
- časopisecké články MeSH
- hodnotící studie MeSH
- práce podpořená grantem MeSH
- Názvy látek
- anionty MeSH
- antiflogistika nesteroidní MeSH
- diklofenak MeSH
- elektrolyty MeSH
- ibuprofen MeSH
- kyseliny MeSH
- neopioidní analgetika MeSH
- pitná voda MeSH
The subject of this work is the definition of a simple model based on general ITP theory that allows describing and predicting the behavior of ITP systems compatible with ESI-MS detection. The model is exemplified by anionic ITP of weak acids that represent an interesting potential application field of ITP-ESI-MS. Suitable ESI-compatible electrolyte systems of very simple composition are proposed including a special free-acid ITP arrangement. The properties of these systems are discussed using illustrative diagrams of their stacking windows. The use of anionic ITP-ESI-MS in negative-ion ESI mode is reported for the first time and its suitability for sensitive trace analysis is demonstrated. The presented ITP-ESI-MS application example comprises a free-acid ITP system formed of formic and propionic acids and direct injection analysis of ibuprofen and diclofenac in waters with quantitation limits of the order 10(-10) M.
Citace poskytuje Crossref.org
