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Titolo:
A planar pCO(2) sensor with enhanced electrochemical properties
Autore:
Shin, JH; Lee, JS; Choi, SH; Lee, DK; Nam, H; Cha, GS;
Indirizzi:
Kwangwoon Univ, Dept Chem, Chem Sensor Res Grp, Seoul 139701, South Korea Kwangwoon Univ Seoul South Korea 139701 s Grp, Seoul 139701, South Korea
Titolo Testata:
ANALYTICAL CHEMISTRY
fascicolo: 18, volume: 72, anno: 2000,
pagine: 4468 - 4473
SICI:
0003-2700(20000915)72:18<4468:APPSWE>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
ION-SELECTIVE ELECTRODE; POTENTIOMETRIC PROPERTIES; HYDROPHILIC POLYURETHANE; MEMBRANE-ELECTRODE; CARBONIC-ANHYDRASE; BLOOD ANALYSIS; GAS SENSOR; PH; CO2; PERFORMANCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Cha, GS Kwangwoon Univ, Dept Chem, Chem Sensor Res Grp, Seoul 139701, South Korea Kwangwoon Univ Seoul South Korea 139701 eoul 139701, South Korea
Citazione:
J.H. Shin et al., "A planar pCO(2) sensor with enhanced electrochemical properties", ANALYT CHEM, 72(18), 2000, pp. 4468-4473

Abstract

To develop planar microchemical pCO(2) sensing devices with improved electrochemical properties, we combined two advanced technologies. One is a differential sensor arrangement to simplify the microfabrication procedure by employing pH-sensitive gas-permeable membranes, and the other is the use of an enzyme (carbonic anhydrase) to shorten total measurement time by accelerating the rate of CO2 hydration. The adhesion of the polyurethane-matrix gas-permeable membrane is enhanced significantly by incorporating a silanizing reagent (silicon tetrachloride), improving the stability and extending sensor lifetime. The proposed differential pCO(2) microelectrodes exhibited significantly improved performance in their preconditioning period, responseand recovery times, stability, response slope, and lifetime.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 06:59:27