The influence of CO2 on ISFETs with polymer membranes and characterization of a carbonate ion sensor

被引：12

作者：

Abramova, Natalia ^{[1
]}

Levichev, Sergey ^{[2
]}

Bratov, Andrey ^{[1
]}

机构：

[1] IMB CNM CSIC, Barcelona 08193, Spain

[2] St Petersburg State Univ, Chem Sensors Lab, Fac Chem, St Petersburg 199034, Russia

来源：

TALANTA | 2010年 / 81卷 / 4-5期

关键词：

ISFET; Photocured polymer membrane; Carbonate ion sensor; FIELD-EFFECT TRANSISTORS; INTEGRATED MULTISENSOR CHIP; SELECTIVE ELECTRODE; CHEMICAL SENSORS; DIOXIDE; SOLVENT; PH; SERUM; INTERFERENCE; INTERFACE;

D O I：

10.1016/j.talanta.2010.03.034

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The influence of CO2 and acetic acid on the response of ISFET sensors with PVC and photocured polyurethane polymer membranes with valinomycin as an ionophore was assessed. Experimental results show that the presence of these compounds has no effect on sensors parameters even after prolonged soaking in a water solution Using a photocured polyurethane polymer as an ion-selective membrane matrix for an ISFET, a carbonate ion sensor was developed with hexyl-p-trifluoroacetylbenzoate (HE) as an ionophore Effect of cationic and anionic lipophilic additives on the sensors response was studied Sensors with the optimized membrane composition based on HE (79%. w/w) and tridodecylmethylammonium chloride (5 7%, w/w) show sensitivity of 27-30 mV per decade of carbonate ion concentration, sufficient selectivity in front of chloride ions, and a lifetime of 3-5 months (C) 2010 Elsevier B V All rights reserved

引用

页码：1750 / 1754

页数：5

共 52 条

[1] Integrated multi-sensor chip with photocured polymer membranes containing copolymerised plasticizer for direct pH, potassium, sodium and chloride ions determination in blood serum [J].