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Article: Polarographic determination of sorbic acid in fruit juices and soft drinks

TitlePolarographic determination of sorbic acid in fruit juices and soft drinks
Authors
Issue Date1990
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/analyst
Citation
Analyst, 1990, v. 115 n. 9, p. 1219-1221 How to Cite?
AbstractA simple differential-pulse polarographic method using a laboratory-built hanging mercury drop electrode as the working electrode was developed for the determination of sorbic acid in fruit juices and soft drinks. Sorbic acid was extracted from the samples with diethyl ether. After reduction of the ethereal solution to a small volume by direct evaporation, the residual ether was dissolved in the supporting electrolyte (25 ml of acetonitrile + 1 ml of 0.06 M acetic acid + 0.8 g of tetraethylammonium bromide). Peak current was measured at –1.7 V. The working range of the method, without dilution or pre-concentration of the samples, was from 4 to 229 p.p.m. for the original juice and drink samples. The validity of the method was confirmed by parallel determinations using the method of the Association of Official Analytical Chemists and by recovery tests on a large variety of juice samples. Satisfactory recoveries and agreement in results from the two methods were obtained. The recovery and precision (relative standard deviation) of the method were 97 ± 4 and 100 ± 3%, respectively, for blackcurrant juice for five determinations.
Persistent Identifierhttp://hdl.handle.net/10722/167488
ISSN
2015 Impact Factor: 4.033
2015 SCImago Journal Rankings: 1.300
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorFung, YSen_US
dc.contributor.authorLuk, SFen_US
dc.date.accessioned2012-10-08T03:07:36Z-
dc.date.available2012-10-08T03:07:36Z-
dc.date.issued1990en_US
dc.identifier.citationAnalyst, 1990, v. 115 n. 9, p. 1219-1221en_US
dc.identifier.issn0003-2654en_US
dc.identifier.urihttp://hdl.handle.net/10722/167488-
dc.description.abstractA simple differential-pulse polarographic method using a laboratory-built hanging mercury drop electrode as the working electrode was developed for the determination of sorbic acid in fruit juices and soft drinks. Sorbic acid was extracted from the samples with diethyl ether. After reduction of the ethereal solution to a small volume by direct evaporation, the residual ether was dissolved in the supporting electrolyte (25 ml of acetonitrile + 1 ml of 0.06 M acetic acid + 0.8 g of tetraethylammonium bromide). Peak current was measured at –1.7 V. The working range of the method, without dilution or pre-concentration of the samples, was from 4 to 229 p.p.m. for the original juice and drink samples. The validity of the method was confirmed by parallel determinations using the method of the Association of Official Analytical Chemists and by recovery tests on a large variety of juice samples. Satisfactory recoveries and agreement in results from the two methods were obtained. The recovery and precision (relative standard deviation) of the method were 97 ± 4 and 100 ± 3%, respectively, for blackcurrant juice for five determinations.-
dc.languageengen_US
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/analysten_US
dc.relation.ispartofAnalysten_US
dc.subject.meshBeverages - Analysisen_US
dc.subject.meshCarbonated Beverages - Analysisen_US
dc.subject.meshFruit - Analysisen_US
dc.subject.meshPolarography - Standards - Statistics & Numerical Dataen_US
dc.subject.meshQuality Controlen_US
dc.subject.meshSorbic Acid - Analysisen_US
dc.titlePolarographic determination of sorbic acid in fruit juices and soft drinksen_US
dc.typeArticleen_US
dc.identifier.emailFung, Y:ysfung@hku.hken_US
dc.identifier.authorityFung, Y=rp00697en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1039/AN9901501219-
dc.identifier.pmid2091491-
dc.identifier.scopuseid_2-s2.0-0025013434en_US
dc.identifier.volume115en_US
dc.identifier.issue9en_US
dc.identifier.spage1219en_US
dc.identifier.epage1221en_US
dc.identifier.isiWOS:A1990DZ78200015-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridFung, Y=13309754700en_US
dc.identifier.scopusauthoridLuk, S=7005840604en_US

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