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INDIRECT SPECTROPHOTOMETRIC DETERMINATION OF MICROAMOUNTS OF THIOSULFATE

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dc.contributor.authorDEMIRATA, B
dc.contributor.authorAFSAR, H
dc.date.accessioned2026-06-27T12:58:31Z
dc.date.issued1992
dc.description.abstractA spectrophotometric method for microdetermination of S2O32- has been developed. The method is based on the oxidation of thiosulfate with chlorine (Cl2) and the residual chlorine is determined by the color reactions with o-tolidine (3,3'-dimethylbenzidine). A linear calibration graph (0 - 8 x 10(-6) M S2O32-) is obtained under optimum reaction conditions at room temperature and pH 11. The stoichiometric mole ratio of chlorine, Cl2, to thiosulfate is 4. The effective molar absorptivity for thiosulfate with o-tolidine is 2.15 x 10(5) M-1 cm-1 at pH 1.6. The lower limit of determination is 4.65 x 10(-8) or 5.21 ppb (0.026-mu-g thiosulfate in 5 ml).en
dc.description.urihttps://doi.org/10.2116/analsci.8.225
dc.identifier.doi10.2116/analsci.8.225
dc.identifier.endpage227
dc.identifier.issn0910-6340
dc.identifier.issue2
dc.identifier.startpage225
dc.identifier.urihttps://hdl.handle.net/20.500.14981/48413
dc.identifier.volume8
dc.identifier.wosA1992HM97900020
dc.language.isoeng
dc.publisherJAPAN SOC ANALYTICAL CHEM
dc.relation.ispartofANALYTICAL SCIENCES
dc.subjectINDIRECT THIOSULFATE DETERMINATION
dc.subjectSPECTROPHOTOMETRY
dc.subjectO-TOLIDINE
dc.subjectMICRO-AMOUNTS
dc.subjectChemistry
dc.titleINDIRECT SPECTROPHOTOMETRIC DETERMINATION OF MICROAMOUNTS OF THIOSULFATE
dc.typeArticle
dspace.entity.typePublication
local.import.sourceWOS

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