A NOVEL SPECTROSCOPIC METHOD TO IMAGE H2O DISTRIBUTION IN ION-SELECTIVE MEMBRANES

被引：41

作者：

LI, XZ ^{[1
]}

PETROVIC, S ^{[1
]}

HARRISON, DJ ^{[1
]}

机构：

[1] UNIV ALBERTA,DEPT CHEM,EDMONTON T6G 2G2,ALBERTA,CANADA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1990年 / 1卷 / 1-6期

关键词：

D O I：

10.1016/0925-4005(90)80215-L

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A spatial imaging photometer has been developed to spectroscopically probe the internal concentration profile of H2O in polyvinylchloride-based K+-sensitive membranes. Addition to the membrane of the water-sensitive dye CoCl2 provides a means of spectroscopically observing the permeation of H2O. An initial rate of H2O uptake occurs with a diffusion coefficient of 3 × 10-7 cm2/s. A second stage then begins with light scattering centres being induced by H2O uptake, with an apparent diffusion coefficient of 3 × 10-8 cm2/s. © 1990.

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页码：275 / 280

页数：6

相关论文

共 13 条

[1] POTENTIAL REVERSALS ACROSS SITE-FREE PASSIVE MEMBRANES - A SIMULATION ANALYSIS [J].

BRUMLEVE, TR ;

BUCK, RP .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1981, 126 (1-3) :55-71

[2] ION NEUTRAL CARRIER TRANSPORT IN OPEN AND CLOSED SYSTEMS [J].

BUCK, RP .

JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (09) :2347-2350

[3] CONCENTRATION PROFILE OF CU-2+ ION NEAR A PLANE VERTICAL CATHODE IN ELECTROLYTES CONTAINING CUSO4 AND AN EXCESS OF H2SO4 AS A SUPPORTING ELECTROLYTE [J].

FUKUNAKA, Y ;

DENPO, K ;

IWATA, M ;

MARUOKA, K ;

KONDO, Y .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1983, 130 (12) :2492-2500

[4] ENHANCED LIFETIME AND ADHESION OF K+-SENSITIVE, NH4+-SENSITIVE, AND CA-2+-SENSITIVE MEMBRANES ON SOLID-SURFACES USING HYDROXYL-MODIFIED POLYVINYLCHLORIDE MATRICES [J].

HARRISON, DJ ;

CUNNINGHAM, LL ;

LI, XZ ;

TECLEMARIAM, A ;

PERMANN, D .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1988, 135 (10) :2473-2478

[5] PLASTICIZED POLYVINYL-CHLORIDE) PROPERTIES AND CHARACTERISTICS OF VALINOMYCIN ELECTRODES .1. HIGH-FREQUENCY RESISTANCES AND DIELECTRIC-PROPERTIES [J].

HORVAI, G ;

GRAF, E ;

TOTH, K ;

PUNGOR, E ;

BUCK, RP .

ANALYTICAL CHEMISTRY, 1986, 58 (13) :2735-2740

[6] HIGH-RESOLUTION SPATIALLY RESOLVED VISIBLE ABSORPTION SPECTROMETRY OF THE ELECTROCHEMICAL DIFFUSION LAYER [J].

JAN, CC ;

MCCREERY, RL .

ANALYTICAL CHEMISTRY, 1986, 58 (13) :2771-2777

[7]

LEPLA K, 1989, THESIS U ALBERTA EDM

[8] CATION-RESPONSE MECHANISM OF NEUTRAL CARRIER BASED ION-SELECTIVE ELECTRODE MEMBRANES [J].

MORF, WE ;

SIMON, W .

HELVETICA CHIMICA ACTA, 1986, 69 (05) :1120-1131

[9] TRANSPORT PROPERTIES OF NEUTRAL CARRIER ION-SELECTIVE MEMBRANES [J].

MORF, WE ;

WUHRMANN, P ;

SIMON, W .

ANALYTICAL CHEMISTRY, 1976, 48 (07) :1031-1039

[10]

MORF WE, 1981, STUDIES ANAL CHEM, V2