Quantitation of drugs via molecularly imprinted polymer solid phase extraction and electrospray ionization mass spectrometry: benzodiazepines in human plasma
In: Analyst (London. 1877. Print), Jg. 136 (2011), Heft 18, S. 3753-3757
Online
academicJournal
- print, 25 ref
Zugriff:
The association of solid phase extraction with molecularly imprinted polymers (MIP) and electrospray ionization mass spectrometry (ESI-MS) is applied to the direct extraction and quantitation of benzodiazepines in human plasma. The target analytes are sequestered by MIP and directly analyzed by ESI-MS. Due to the MIP highly selective extraction, ionic suppression during ESI is minimized; hence no separation is necessary prior to ESI-MS, which greatly increases analytical speed. Benzodiazepines (medazepam, nitrazepam, diazepam, chlordiazepoxide, clonazepam and midazolam) in human plasma were chosen as a proof-of-principle case of drug analyses by MIP-ESI-MS in a complex matrix. MIP-ESI-MS displayed good figures of merits for medazepam, nitrazepam, diazepam, chlordiazepoxide and midazolam, with analytical calibration curves ranging from 10 to 250 μg L―1 (r > 0.98) with limit of quantification <10 μg L―1 and acceptable within-day and between-day precision and accuracy.
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Quantitation of drugs via molecularly imprinted polymer solid phase extraction and electrospray ionization mass spectrometry: benzodiazepines in human plasma
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Autor/in / Beteiligte Person: | COSTA FIGUEIREDO, Eduardo ; SPARRAPAN, Regina ; BRAGA SANVIDO, Gustavo ; GONCALVES SANTOS, Mariane ; ZEZZI ARRUDA, Marco Aurélio ; NOGUEIRA EBERLIN, Marcos |
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Zeitschrift: | Analyst (London. 1877. Print), Jg. 136 (2011), Heft 18, S. 3753-3757 |
Veröffentlichung: | Cambridge: Royal Society of Chemistry, 2011 |
Medientyp: | academicJournal |
Umfang: | print, 25 ref |
ISSN: | 0003-2654 (print) |
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