Abstract : A simple but high performance potentiometric titration technique using pulsating sensors has been d
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Abstract : A simple but high performance potentiometric titration technique using pulsating sensors has been developed for assay of dissolved oxygen (DO) in water samples down to 10.0 microg L(-1) levels. The technique involves Winkler titration chemistry commonly used for determination of dissolved oxygen in water at mg L(-1) levels with modification in methodology for accurate detection of end point even at 10.0 microg L(-1) levels DO present in the sample. An indigenously built sampling cum pretreatment vessel has been deployed for collection and chemical fixing of dissolved oxygen in water samples from flowing water line without exposure to air. A potentiometric titration facility using pulsating sensors developed in-house is used to carry out titration. The power of the titration technique has been realised in estimation of very dilute solution of iodine equivalent to 10 microg L(-1) O(2). Finally several water samples containing dissolved oxygen from mg L(-1) to microg L(-1) levels were successfully analysed with excellent reproducibility using this new technique. The precision in measurement of DO in water at 10 microg L(-1) O(2) level is 0.14 (n=5) RSD 1.4. Probably for the first time a potentiometric titration technique has been successfully deployed for assay of dissolved oxygen in water samples at 10 microg L(-1) levels.Copyright 2010 Elsevier B.V. All rights reserved.PMID 20510898 PubMedLinkOut - more resourcesFull Text SourcesElsevier ScienceEBSCOOhioLINK Electronic Journal CenterSwets Information Services Supplemental Content Related citations Sequential injection analysis for automation of the Winkler methodology with real-time SIMPLEX optimization and shipboard application. Anal Chim Acta. 2010 Sequential injection analysis for automation of the Winkler methodology with real-time SIMPLEX optimization and shipboard application.Horstkotte B Tovar Sánchez A Duarte CM Cerdà V. Anal Chim Acta. 2010 Jan 25 658(2)147-55. Epub 2009 Nov 16. Optimization of a novel two-phase potentiometric titration method of barbiturates with mercury (II). Part II Experimental evaluation. Pharm Weekbl Sci. 1983 Optimization of a novel two-phase potentiometric titration method of barbiturates with mercury (II). Part II Experimental evaluation.Coenegracht PM Metting HJ Doornbos DA. Pharm Weekbl Sci. 1983 Oct 21 5(5)243-7. Headspace liquid-phase microextraction using ionic liquid as extractant for the preconcentration of dichlorodiphenyltrichloroethane and its metabolites at trace levels in water samples. Anal Chim Acta. 2006 Headspace liquid-phase microextraction using ionic liquid as extractant for the preconcentration of dichlorodiphenyltrichloroethane and its metabolites at trace levels in water samples.Ye CL Zhou QX Wang XM. Anal Chim Acta. 2006 Jul 21 572(2)165-71. Epub 2006 May 26. Liquid chromatography-tandem mass spectrometry application for the determination of extracellular hepatotoxins in Irish lake and drinking waters. Anal Chem. 2007 Liquid chromatography-tandem mass spectrometry application for the determination of extracellular hepatotoxins in Irish lake and drinking waters.Allis O Dauphard J Hamilton B Shuilleabhain AN Lehane M James KJ Furey A. Anal Chem. 2007 May 1 79(9)3436-47. Epub 2007 Apr 3. A multisyringe flow injection Winkler-based spectrophotometric analyzer for in-line monitoring of dissolved oxygen in seawater. Talanta. 2010 A multisyringe flow injection Winkler-based spectrophotometric analyzer for in-line monitoring of dissolved oxygen in seawater.Horstkotte B Alonso JC Miró M Cerdà V. Talanta. 2010 Jan 15 80(3)1341-6. See reviews... See all... Recent activity Clear Turn Off Turn On Pulsating potentiometric titration technique for assay of dissolved oxygen in wa... Pulsating potentiometric titration technique for assay of dissolved oxygen in water at trace level.Anal Chim Acta. 2010 Jun 11 669(1-2)17-24. Epub 2010 May 14 . PubMed Your browsing activity is empty. Activity recording is turned off. Turn recording back on See more... You are here NCBI gt Literature gt PubMed Write to the Help Desk Simple NCBI Directory Getting Started NCBI Education NCBI Help Manual NCBI Handbook Training amp Tutorials Resources Chemicals amp BioassaysData amp SoftwareDNA amp RNADomains amp StructuresGenes amp ExpressionGenetics amp MedicineGenomes amp MapsHomologyLiteratureProteinsSequence AnalysisTaxonomyTraining amp TutorialsVariation Popular PubMed Nucleotide BLAST PubMed Central Gene Bookshelf Protein OMIM Genome SNP Structure Featured GenBank Reference Sequences Map Viewer Genome Projects Human Genome Mouse Genome Influenza Virus Primer-BLAST Sequence Read Archive NCBI Information About NCBI Research at NCBI NCBI Newsletter NCBI FTP Site NCBI on Facebook NCBI on Twitter NCBI on YouTube NIH DHHS USA.gov Copyright | Disclaimer | Privacy | Accessibility | Contact National Center for Biotechnology Information U.S. National Library of Medicine 8600 Rockville Pike Bethesda MD 20894 USA
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