Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Development of a capillary electrophoresis-77 K luminescence detection system for online spectral identification
Autore:
Lin, CH; Chung, YL; Chen, YH;
Indirizzi:
Natl Taiwan Normal Univ, Dept Chem, Taipei, Taiwan Natl Taiwan Normal Univ Taipei Taiwan l Univ, Dept Chem, Taipei, Taiwan
Titolo Testata:
ANALYST
fascicolo: 3, volume: 126, anno: 2001,
pagine: 302 - 305
SICI:
0003-2654(2001)126:3<302:DOACEK>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
LINE-NARROWING SPECTROSCOPY; MASS-SPECTROMETRY; 3,4-METHYLENEDIOXYMETHAMPHETAMINE MDMA; FLUORESCENCE; RESVERATROL; ADDUCTS; URINE; METHAMPHETAMINE; CHROMATOGRAPHY; AMPHETAMINE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Lin, CH Natl Taiwan Normal Univ, Dept Chem, 88 Sec 4,Tingchow Rd, Taipei, Taiwan Natl Taiwan Normal Univ 88 Sec 4,Tingchow Rd Taipei Taiwan aiwan
Citazione:
C.H. Lin et al., "Development of a capillary electrophoresis-77 K luminescence detection system for online spectral identification", ANALYST, 126(3), 2001, pp. 302-305

Abstract

We have demonstrated that capillary electrophoresis (CE) can be easily interfaced with 77 K luminescence spectroscopy (LS) for separation and online spectral identification of structurally similar analytes. This novel CE-LS apparatus consists of a regular CE system, instrumentation for LS and a specially designed capillary Dewar. When the separating molecules traverse into the cryostat detection window, liquid nitrogen is added, freezing the separating analyte zones within the capillary. At low temperature, detection limits are improved via signal averaging and the inherent increase in quantum yield at 77 K. We present the first application of the CE-LS system to structural isomers (2,3- and 3,4-methylenedioxymethamphetamine) and stereoisomers (trans- and cis-resveratrol). With this approach, the CE-LS interfacing provides a sensitive, accurate, rapid, simple and economic methodology for analytical chemistry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/01/20 alle ore 07:20:22