Amperometric Sensor for Detection of Chloride Ions

Chloride ion sensing is important in many fields such as clinical diagnosis, environmental monitoring and industrial applications. We have measured chloride ions at a carbon paste electrode (CPE) and at a CPE modified with solid AgNO3, a solution of AgNO3 and/or solid silver particles. Detection lim...

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Main Authors: Rene Kizek, Petr Babula, Jaromir Hubalek, Vojtech Adam, Libuse Trnkova
Format: Article
Language:English
Published: MDPI AG 2008-09-01
Series:Sensors
Subjects:
Online Access:http://www.mdpi.com/1424-8220/8/9/5619/
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spelling doaj-08b4d8d64f81499490a939bb94eb66302020-11-24T23:07:48ZengMDPI AGSensors1424-82202008-09-01895619563610.3390/s8095619Amperometric Sensor for Detection of Chloride IonsRene KizekPetr BabulaJaromir HubalekVojtech AdamLibuse TrnkovaChloride ion sensing is important in many fields such as clinical diagnosis, environmental monitoring and industrial applications. We have measured chloride ions at a carbon paste electrode (CPE) and at a CPE modified with solid AgNO3, a solution of AgNO3 and/or solid silver particles. Detection limits (3 S/N) for chloride ions were 100 μM, 100 μM and 10 μM for solid AgNO3, solution of AgNO3 and/or solid silver particles, respectively. The CPE modified with silver particles is the most sensitive to the presence chloride ions. After that we approached to the miniaturization of the whole electrochemical instrument. Measurements were carried out on miniaturized instrument consisting of a potentiostat with dimensions 35 × 166 × 125 mm, screen printed electrodes, a peristaltic pump and a PC with control software. Under the most suitable experimental conditions (Britton-Robinson buffer, pH 1.8 and working electrode potential 550 mV) we estimated the limit of detection (3 S/N) as 500 nM.http://www.mdpi.com/1424-8220/8/9/5619/Chloride IonsSilverCarbon Paste ElectrodeScreen Printed ElectrodeVoltammetryAmperometry
collection DOAJ
language English
format Article
sources DOAJ
author Rene Kizek
Petr Babula
Jaromir Hubalek
Vojtech Adam
Libuse Trnkova
spellingShingle Rene Kizek
Petr Babula
Jaromir Hubalek
Vojtech Adam
Libuse Trnkova
Amperometric Sensor for Detection of Chloride Ions
Sensors
Chloride Ions
Silver
Carbon Paste Electrode
Screen Printed Electrode
Voltammetry
Amperometry
author_facet Rene Kizek
Petr Babula
Jaromir Hubalek
Vojtech Adam
Libuse Trnkova
author_sort Rene Kizek
title Amperometric Sensor for Detection of Chloride Ions
title_short Amperometric Sensor for Detection of Chloride Ions
title_full Amperometric Sensor for Detection of Chloride Ions
title_fullStr Amperometric Sensor for Detection of Chloride Ions
title_full_unstemmed Amperometric Sensor for Detection of Chloride Ions
title_sort amperometric sensor for detection of chloride ions
publisher MDPI AG
series Sensors
issn 1424-8220
publishDate 2008-09-01
description Chloride ion sensing is important in many fields such as clinical diagnosis, environmental monitoring and industrial applications. We have measured chloride ions at a carbon paste electrode (CPE) and at a CPE modified with solid AgNO3, a solution of AgNO3 and/or solid silver particles. Detection limits (3 S/N) for chloride ions were 100 μM, 100 μM and 10 μM for solid AgNO3, solution of AgNO3 and/or solid silver particles, respectively. The CPE modified with silver particles is the most sensitive to the presence chloride ions. After that we approached to the miniaturization of the whole electrochemical instrument. Measurements were carried out on miniaturized instrument consisting of a potentiostat with dimensions 35 × 166 × 125 mm, screen printed electrodes, a peristaltic pump and a PC with control software. Under the most suitable experimental conditions (Britton-Robinson buffer, pH 1.8 and working electrode potential 550 mV) we estimated the limit of detection (3 S/N) as 500 nM.
topic Chloride Ions
Silver
Carbon Paste Electrode
Screen Printed Electrode
Voltammetry
Amperometry
url http://www.mdpi.com/1424-8220/8/9/5619/
work_keys_str_mv AT renekizek amperometricsensorfordetectionofchlorideions
AT petrbabula amperometricsensorfordetectionofchlorideions
AT jaromirhubalek amperometricsensorfordetectionofchlorideions
AT vojtechadam amperometricsensorfordetectionofchlorideions
AT libusetrnkova amperometricsensorfordetectionofchlorideions
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