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The double K+/Ca2+ sensor based on laser scanned silicon transducer (LSST) for multi-component analysis
- Source :
- Talanta. 59:785-795
- Publication Year :
- 2003
- Publisher :
- Elsevier BV, 2003.
-
Abstract
- In the present work a double ion sensor based on a laser scanned semiconductor transducer (LSST) for the simultaneous determination of K + - and Ca 2+ -ions in solutions has been developed. Specially elaborated ion-sensitive membrane compositions based on valinomycin and calcium ionophore calcium bis[4-(1,1,3,3-tetramethylbutyl)phenyl] phosphate (t-HDOPP-Ca) were deposited as separate layers on a silanized surface of the Si/SiO 2 /Si 3 N 4 -transducer. The proposed multi-sensor exhibits theoretical sensitivities and the detection limits of the sensor were found to be 2×10 −6 mol l −1 for K + and 5×10 −6 mol l −1 for Ca 2+ . The elaborated double sensor is proposed for the first time as a prototype of a new type of multi-sensor systems for chemical analysis.
Details
- ISSN :
- 00399140
- Volume :
- 59
- Database :
- OpenAIRE
- Journal :
- Talanta
- Accession number :
- edsair.doi.dedup.....564e94710bee600ab8050830342d2067