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Titolo:
Densitometric analysis for quality control in poly(vinyl chloride)-membrane electrode manufacturing
Autore:
Eikermann, D; Borchardt, M; Cammann, K; Knoll, M; Wendzinski, F;
Indirizzi:
ICB, D-48149 Munster, Germany ICB Munster Germany D-48149ICB, D-48149 Munster, Germany Univ Munster, Inst Anorgan Chem, D-48149 Munster, Germany Univ Munster Munster Germany D-48149 rgan Chem, D-48149 Munster, Germany Univ Munster, Inst Chem Phys, D-48149 Munster, Germany Univ Munster Munster Germany D-48149 Chem Phys, D-48149 Munster, Germany
Titolo Testata:
ANALYTICA CHIMICA ACTA
fascicolo: 1, volume: 436, anno: 2001,
pagine: 139 - 146
SICI:
0003-2670(20010601)436:1<139:DAFQCI>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
ION-SELECTIVE ELECTRODES; AMMONIUM; SENSORS; MEMBRANES; BIOSENSOR; ANALYZERS;
Keywords:
quality control; pigment; ion-selective polymer membrane; light reflection measurement; densitometer;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Wendzinski, F ICB, Mendelstr 7, D-48149 Munster, Germany ICB Mendelstr 7 Munster Germany D-48149 49 Munster, Germany
Citazione:
D. Eikermann et al., "Densitometric analysis for quality control in poly(vinyl chloride)-membrane electrode manufacturing", ANALYT CHIM, 436(1), 2001, pp. 139-146

Abstract

This paper describes a simple densitometric method which will enable high quality potentiometric ion-selective electrodes (ISEs) to be produced. Whenassembling double matrix membrane (DMM) technology electrodes, it is critical that the membrane is located for the electrode to function properly. Itis, therefore, important that this is monitored during the production process. The membrane must be able to come into contact with the relevant substance to be analysed but it is also important that there is no leakage between the solution and the sensor conductor path. The poly(vinyl chloride)- (PVC) membrane material is inserted into sensor configuration. All manufactured sensors need to be checked so that there is no leakage in the membrane. After the PVC is inserted, it is necessary to perform a densitometric measurement to check that the correct amount of PVC is presented and that it is evenly distributed. A pigment is added to the PVC to enable this to occur. The pigment ensures that part of the light spectrum emitted by the densitometer is absorbed. The reflected light is then analysed to identify both thequantity and location of the PVC. We found that adding a pigment to the PVC-membrane surrounding ammonium-selective electrodes does not change the electrodes electrochemical characteristics. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 15:35:12