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Conference Paper: Determination of sulphate in water by flow-injection analysis with electrode-separated piezoelectric quartz crystal sensor

TitleDetermination of sulphate in water by flow-injection analysis with electrode-separated piezoelectric quartz crystal sensor
Authors
KeywordsFlow-injection analysis
Electrode-separated piezoelectric quartz crystal
Sulphate analysis
Issue Date2008
PublisherElsevier BV
Citation
The 11th International Meeting on Chemical Sensors (IMCS 11), Brescia, Italy, 16-19 July 2006. In Sensors and Actuators B: Chemical, 2008, v. 130 n. 1, p. 551-560 How to Cite?
AbstractA new flow-injection analysis (FIA) system with detection by an electrode-separated piezoelectric quartz crystal (ESPQC) was developed for sulphate determination in water. The method was based on the decrease in conductivity upon precipitation of barium sulphate due to the mixing between reagent and sample with change indicated by the frequency shift in the ESPQC sensor. The best performance was achieved using a three-channel FI system consisted of a carrier stream of water, a buffer stream containing 0.05% KCl, 10 mM acetic acid and l mM sodium acetate, and a reagent stream of 0.1% BaCl2. Under the optimized conditions, the linear range for sulphate determination was 0.5–50 ppm with a correlation coefficient of 0.9991, detection limit 0.3 ppm (S/N = 2) and sample throughput 50 samples/h. The effect of co-existing cations and anions were investigated and found not to cause interference for most samples except those with very high salt content. The reliability of the method was established by parallel determination using standard turbidimetric method for sulphate in drinking and pond water samples with results within statistical variation. The method developed was shown to provide a simple, sensitive, rapid and reproducible FIA detection method for ionic compounds in the liquid medium.
Persistent Identifierhttp://hdl.handle.net/10722/96785
ISSN
2015 Impact Factor: 4.758
2015 SCImago Journal Rankings: 1.305

 

DC FieldValueLanguage
dc.contributor.authorFung, YSen_HK
dc.contributor.authorWong, CWen_HK
dc.contributor.authorChoy, JTS-
dc.contributor.authorSze, KL-
dc.date.accessioned2010-09-25T16:44:54Z-
dc.date.available2010-09-25T16:44:54Z-
dc.date.issued2008en_HK
dc.identifier.citationThe 11th International Meeting on Chemical Sensors (IMCS 11), Brescia, Italy, 16-19 July 2006. In Sensors and Actuators B: Chemical, 2008, v. 130 n. 1, p. 551-560en_HK
dc.identifier.issn0925-4005-
dc.identifier.urihttp://hdl.handle.net/10722/96785-
dc.description.abstractA new flow-injection analysis (FIA) system with detection by an electrode-separated piezoelectric quartz crystal (ESPQC) was developed for sulphate determination in water. The method was based on the decrease in conductivity upon precipitation of barium sulphate due to the mixing between reagent and sample with change indicated by the frequency shift in the ESPQC sensor. The best performance was achieved using a three-channel FI system consisted of a carrier stream of water, a buffer stream containing 0.05% KCl, 10 mM acetic acid and l mM sodium acetate, and a reagent stream of 0.1% BaCl2. Under the optimized conditions, the linear range for sulphate determination was 0.5–50 ppm with a correlation coefficient of 0.9991, detection limit 0.3 ppm (S/N = 2) and sample throughput 50 samples/h. The effect of co-existing cations and anions were investigated and found not to cause interference for most samples except those with very high salt content. The reliability of the method was established by parallel determination using standard turbidimetric method for sulphate in drinking and pond water samples with results within statistical variation. The method developed was shown to provide a simple, sensitive, rapid and reproducible FIA detection method for ionic compounds in the liquid medium.-
dc.languageengen_HK
dc.publisherElsevier BV-
dc.relation.ispartofSensors and Actuators B: Chemicalen_HK
dc.subjectFlow-injection analysis-
dc.subjectElectrode-separated piezoelectric quartz crystal-
dc.subjectSulphate analysis-
dc.titleDetermination of sulphate in water by flow-injection analysis with electrode-separated piezoelectric quartz crystal sensoren_HK
dc.typeConference_Paperen_HK
dc.identifier.emailFung, YS: ysfung@hku.hken_HK
dc.identifier.authorityFung, YS=rp00697en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.snb.2007.09.070-
dc.identifier.hkuros135137en_HK
dc.identifier.spage2en_HK

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