MEASUREMENT UNCERTAINTY OF SPECTROPHOTOMETRIC DETERMINATION OF HEXAVALENT CHROMIUM IN WATER

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dc.contributor.authorKarakurt, Sevtap
dc.contributor.authorKarakurt, Serdar
dc.date.accessioned2020-03-26T19:42:03Z
dc.date.available2020-03-26T19:42:03Z
dc.date.issued2017
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractHexavalent chromium, + 6 oxidation state of chromium, is known to be human carcinogen besides damaging respiratory system, kidney, liver, skin and eyes and it can be discharged to surface waters through industrial processes such as welding on stainless steel, painting and electroplating. For the determination of this carcinogen hexavalent chromium in water, one of the most common analytical methods is the colorimetric diphenylcarbazide method. But, in order to report an analysis accurately, the measurement uncertainty of the parameter must be accompanied to the result of the analysis. The aim of this study is to present the measurement uncertainty of hexavalent chromium in water that is determined by the colorimetric method. The sources of uncertainty are specified by a cause-effect diagram and enlarged by using the calculations, thus giving the budget of uncertainty. At the end of the calculations, it was found that the measurement uncertainty was dominantly affected by the calibration curve whereas the precision had no significant effect on the measurement uncertainty. The expanded relative uncertainty was determined as +/- 0.05 with 95% confidence level.en_US
dc.identifier.endpage194en_US
dc.identifier.issn1454-2331en_US
dc.identifier.issue4en_US
dc.identifier.pmid#YOKen_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage181en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12395/35280
dc.identifier.volume79en_US
dc.identifier.wosWOS:000424134600017en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPOLYTECHNIC UNIV BUCHARESTen_US
dc.relation.ispartofUNIVERSITY POLITEHNICA OF BUCHAREST SCIENTIFIC BULLETIN SERIES B-CHEMISTRY AND MATERIALS SCIENCEen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectHexavalent chromiumen_US
dc.subjectmeasurement uncertaintyen_US
dc.subjectUV-visible spectrophotometryen_US
dc.titleMEASUREMENT UNCERTAINTY OF SPECTROPHOTOMETRIC DETERMINATION OF HEXAVALENT CHROMIUM IN WATERen_US
dc.typeArticleen_US

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