Cost effective dual-stage flow injection/sequential injection hybrid for continuous liquid-liquid extraction

A simple and cost effective analytical system combining flow injection (FI) continuous liquid-liquid extraction and sequential injection colorimetric detection was exploited. The standard or sample was injected into a reagent stream to form a less polar ion-association compound in the aqueous phase...

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Main Authors: Somnam S., Jakmunee J., Grudpan K.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-84860739860&partnerID=40&md5=9cf351eb53a2bfc0ab61971a5b43b1e1
http://cmuir.cmu.ac.th/handle/6653943832/6696
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Institution: Chiang Mai University
Language: English
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spelling th-cmuir.6653943832-66962014-08-30T03:51:07Z Cost effective dual-stage flow injection/sequential injection hybrid for continuous liquid-liquid extraction Somnam S. Jakmunee J. Grudpan K. A simple and cost effective analytical system combining flow injection (FI) continuous liquid-liquid extraction and sequential injection colorimetric detection was exploited. The standard or sample was injected into a reagent stream to form a less polar ion-association compound in the aqueous phase before merging with organic solvent to produce tiny segments of aqueous and organic phases alternately. The extraction occurred at the interface of the two phases while they were flowing through an extraction coil to be collected in a test tube. Phase separation occurred in the test tube, then the organic phase was aspirated by a sequential injection (SI) system to monitor the absorbance signal with a simple LED-LDR colorimeter. The extraction and detection processes could be operated independently. That means that while the detection of the signal was in operation, a new sample could be immediately injected for the new cycle of extraction to minimize the use of chemicals and time consumption. The system has been successfully demonstrated for the determination of anionic surfactant in wastewater samples and diphenhydramine hydrochloride in pharmaceutical samples. 2014-08-30T03:51:07Z 2014-08-30T03:51:07Z 2012 Article 1252526 http://www.scopus.com/inward/record.url?eid=2-s2.0-84860739860&partnerID=40&md5=9cf351eb53a2bfc0ab61971a5b43b1e1 http://cmuir.cmu.ac.th/handle/6653943832/6696 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description A simple and cost effective analytical system combining flow injection (FI) continuous liquid-liquid extraction and sequential injection colorimetric detection was exploited. The standard or sample was injected into a reagent stream to form a less polar ion-association compound in the aqueous phase before merging with organic solvent to produce tiny segments of aqueous and organic phases alternately. The extraction occurred at the interface of the two phases while they were flowing through an extraction coil to be collected in a test tube. Phase separation occurred in the test tube, then the organic phase was aspirated by a sequential injection (SI) system to monitor the absorbance signal with a simple LED-LDR colorimeter. The extraction and detection processes could be operated independently. That means that while the detection of the signal was in operation, a new sample could be immediately injected for the new cycle of extraction to minimize the use of chemicals and time consumption. The system has been successfully demonstrated for the determination of anionic surfactant in wastewater samples and diphenhydramine hydrochloride in pharmaceutical samples.
format Article
author Somnam S.
Jakmunee J.
Grudpan K.
spellingShingle Somnam S.
Jakmunee J.
Grudpan K.
Cost effective dual-stage flow injection/sequential injection hybrid for continuous liquid-liquid extraction
author_facet Somnam S.
Jakmunee J.
Grudpan K.
author_sort Somnam S.
title Cost effective dual-stage flow injection/sequential injection hybrid for continuous liquid-liquid extraction
title_short Cost effective dual-stage flow injection/sequential injection hybrid for continuous liquid-liquid extraction
title_full Cost effective dual-stage flow injection/sequential injection hybrid for continuous liquid-liquid extraction
title_fullStr Cost effective dual-stage flow injection/sequential injection hybrid for continuous liquid-liquid extraction
title_full_unstemmed Cost effective dual-stage flow injection/sequential injection hybrid for continuous liquid-liquid extraction
title_sort cost effective dual-stage flow injection/sequential injection hybrid for continuous liquid-liquid extraction
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-84860739860&partnerID=40&md5=9cf351eb53a2bfc0ab61971a5b43b1e1
http://cmuir.cmu.ac.th/handle/6653943832/6696
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