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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MDPI AG
2008-09-01
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Online Access: | http://www.mdpi.com/1424-8220/8/9/5619/ |
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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 |
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