An exploiting of cost-effective direct current conductivity detector in gas diffusion flow injection system

© 2017 Elsevier B.V. In this work, a homemade direct current (DC) conductivity detector as an alternative cost-effective detection device has been fabricated and investigated to use in flow analysis system. Under the selected appropriate conditions of flow system, the electrolysis of a carrier strea...

Full description

Saved in:
Bibliographic Details
Main Authors: Wasin Somboot, Jaroon Jakmunee, Tinakorn Kanyanee
Format: Journal
Published: 2018
Subjects:
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85017548230&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/56973
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Chiang Mai University
id th-cmuir.6653943832-56973
record_format dspace
spelling th-cmuir.6653943832-569732018-12-14T04:18:56Z An exploiting of cost-effective direct current conductivity detector in gas diffusion flow injection system Wasin Somboot Jaroon Jakmunee Tinakorn Kanyanee Chemistry Biochemistry, Genetics and Molecular Biology © 2017 Elsevier B.V. In this work, a homemade direct current (DC) conductivity detector as an alternative cost-effective detection device has been fabricated and investigated to use in flow analysis system. Under the selected appropriate conditions of flow system, the electrolysis of a carrier stream at the conductivity detector was negligible and provides well-defined signal. The cost-effective DC conductivity detector was demonstrated to couple with gas diffusion flow injection system for determination of dissolved inorganic carbon (DIC) in water. The method is based on the conversion of DIC (dissolved CO2, HCO3-and CO32-) presented in the injected sample to carbon dioxide in an acidic donor stream and then CO2gas diffuses through a hydrophobic porous membrane to an acceptor stream. As a result, the change of conductivity signal was observed corresponding to DIC concentration. A linear calibration range of DIC in 1.0–10 mmol L−1, with limit of detection of 70 µmol L−1, repeatability of <3% RSD and 15 injections h−1sample throughput can be obtained. This method was applied for DIC determination in natural water. 2018-09-05T03:32:51Z 2018-09-05T03:32:51Z 2017-08-01 Journal 00399140 2-s2.0-85017548230 10.1016/j.talanta.2017.04.015 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85017548230&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/56973
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemistry
Biochemistry, Genetics and Molecular Biology
spellingShingle Chemistry
Biochemistry, Genetics and Molecular Biology
Wasin Somboot
Jaroon Jakmunee
Tinakorn Kanyanee
An exploiting of cost-effective direct current conductivity detector in gas diffusion flow injection system
description © 2017 Elsevier B.V. In this work, a homemade direct current (DC) conductivity detector as an alternative cost-effective detection device has been fabricated and investigated to use in flow analysis system. Under the selected appropriate conditions of flow system, the electrolysis of a carrier stream at the conductivity detector was negligible and provides well-defined signal. The cost-effective DC conductivity detector was demonstrated to couple with gas diffusion flow injection system for determination of dissolved inorganic carbon (DIC) in water. The method is based on the conversion of DIC (dissolved CO2, HCO3-and CO32-) presented in the injected sample to carbon dioxide in an acidic donor stream and then CO2gas diffuses through a hydrophobic porous membrane to an acceptor stream. As a result, the change of conductivity signal was observed corresponding to DIC concentration. A linear calibration range of DIC in 1.0–10 mmol L−1, with limit of detection of 70 µmol L−1, repeatability of <3% RSD and 15 injections h−1sample throughput can be obtained. This method was applied for DIC determination in natural water.
format Journal
author Wasin Somboot
Jaroon Jakmunee
Tinakorn Kanyanee
author_facet Wasin Somboot
Jaroon Jakmunee
Tinakorn Kanyanee
author_sort Wasin Somboot
title An exploiting of cost-effective direct current conductivity detector in gas diffusion flow injection system
title_short An exploiting of cost-effective direct current conductivity detector in gas diffusion flow injection system
title_full An exploiting of cost-effective direct current conductivity detector in gas diffusion flow injection system
title_fullStr An exploiting of cost-effective direct current conductivity detector in gas diffusion flow injection system
title_full_unstemmed An exploiting of cost-effective direct current conductivity detector in gas diffusion flow injection system
title_sort exploiting of cost-effective direct current conductivity detector in gas diffusion flow injection system
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85017548230&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/56973
_version_ 1681424792074321920