Sol-gel-based optical sensor for the detection of aqueous amines

Korent Urek, Špela; Lobnik, Aleksandra; Mohr, Gerhard J.

| | SLO | ENG | Piškotki in zasebnost

Večja pisava | Manjša pisava

Prva stran > Izpis gradiva

Izpis gradiva

Naslov:	Sol-gel-based optical sensor for the detection of aqueous amines
Avtorji:	ID Korent Urek, Špela (Avtor) ID Lobnik, Aleksandra (Avtor) ID Mohr, Gerhard J. (Avtor)
Datoteke:	http://dx.doi.org/10.1007/s00216-007-1146-x
Jezik:	Angleški jezik
Vrsta gradiva:	Neznano
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	FS - Fakulteta za strojništvo
Opis:	We present an optical sensor for the detection of aqueous amines obtained by incorporating chromoionophore XV (ETHT 4001) into sol-gel thin films. Acid- and base-catalyzed sol-gel processes were studied to prepare stable ormosil layers using various amounts of organically modified sol-gel precursor such asmethyltriethoxysilane (MTriEOS). The sensor layers were coated with a protective layer of microporous white polytetrafluoroethylene (PTFE) in order to prevent interference from ions and ambient light. The measurements were carried out in a flow-through cell in the reflection mode. Acid-catalyzed ormosil layers (pH 1) based on the copolymerization of tetraethoxysilane (TEOS) and MTriEOS did not show any change in signal upon exposure to aqueous amine solutions, while base-catalyzed sensor layers (pH 3 and 13) showed significant changes in signal. The response time (t100) for the base-catalyzedsensor layer L3 (pH 13) upon exposure to different solutions containing 0-608 mmol L-1 aqueous propylamine was 20-30 s, the regeneration time was 70 s and the detection limit was 0.1 mmol L-1. The sensor response was reproducible and reversible. The porous ormosil layers permit dry sensor storage conditions.
Ključne besede:	analytical chemistry, optical sensors, sol-gel technology, determination of amines, fluorimetry
Leto izida:	2007
PID:	20.500.12556/DKUM-27470
UDK:	543.4
COBISS.SI-ID:	11135254
ISSN pri članku:	1618-2642
NUK URN:	URN:SI:UM:DK:EWTYOBLA
Datum objave v DKUM:	01.06.2012
Število ogledov:	3448
Število prenosov:	100
Metapodatki:
Področja:	Ostalo
:	Kopiraj citat

Skupna ocena:	(0 glasov)
Vaša ocena:	Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
Objavi na:

Postavite miškin kazalec na naslov za izpis povzetka. Klik na naslov izpiše podrobnosti ali sproži prenos.

Gradivo je del revije

Naslov:	Analytical and bioanalytical chemistry
Skrajšan naslov:	Anal. bioanal. chem.
Založnik:	Springer
ISSN:	1618-2642
COBISS.SI-ID:	6966294

Sekundarni jezik

Jezik:	Angleški jezik
Ključne besede:	analizna kemija, optični senzorji, sol-gel tehnologija, določevanje aminov, fluorometrija

Komentarji

Dodaj komentar

Za komentiranje se morate prijaviti.

Komentarji (0)

0 - 0 / 0

Ni komentarjev!

Nazaj