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dc.contributor.author한성환-
dc.date.accessioned2017-03-27T01:47:24Z-
dc.date.available2017-03-27T01:47:24Z-
dc.date.issued2015-07-
dc.identifier.citationINTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY, v. 95, NO 7, Page. 618-634en_US
dc.identifier.issn0306-7319-
dc.identifier.issn1029-0397-
dc.identifier.urihttp://www.tandfonline.com/doi/abs/10.1080/03067319.2015.1046057-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/26321-
dc.description.abstractA selective extraction-spectrophotometric method has been developed for determination of selenium(IV) using O-methoxyphenyl thiourea (OMePT) as a chelating agent. The basis of the proposed method is the spectrophotometric determination of selenium(IV)-OMePT complex obtained after extraction of selenium(IV) from 3.5M hydrochloric acid media using OMePT in chloroform solvent. The complex shows maximum absorbance at 350nm against the reagent blank. The Beer's law was obeyed over the concentration range 5-60 mu gmL(-1) of selenium(IV). The optimum concentration range was 20-50 mu gmL(-1) as evaluated from Ringbom's plot. The molar absorptivity and Sandell's sensitivity of the selenium(IV)-OMePT complex in chloroform were 3.312x10(2) Lmol(-1)cm(-1) and 0.2384 mu gcm(-2), respectively. The composition of selenium(IV)-OMePT complex was 1:2 established from slope ratio method, mole ratio method and Job's continuous variation method. The complex was stable for more than 72h. The interfering effect of various foreign ions was studied and suitable masking agents were used wherever necessary to enhance the selectivity of the developed method. The proposed method was successfully applied for the determination of selenium(IV) from real samples, viz. pharmaceutical formulations, shampoo, vegetable sample, synthetic mixtures and environmental samples. Repetition of the method was checked by finding the relative standard deviation (RSD) for 10 determinations which was 0.35%.en_US
dc.description.sponsorshipThe authors are thankful to the University Grants Commission, New Delhi, India, for providing the Teacher Fellowship under Faculty Improvement Programme to one of the authors, Ramesh M. Naval, and financial assistance in the form of M. R. P. to Shashikant R. Kuchekar.en_US
dc.language.isoenen_US
dc.publisherTAYLOR & FRANCIS LTDen_US
dc.subjectO-methoxyphenyl thioureaen_US
dc.subjectpharmaceutical samplesen_US
dc.subjectenvironmental samplesen_US
dc.subjectseleniumen_US
dc.subjectsolvent extractionen_US
dc.subjectspectrophotometryen_US
dc.titleSelective determination of selenium(IV) from environmental samples by UV-visible spectrophotometry using O-methoxyphenyl thiourea as a chelating liganden_US
dc.typeArticleen_US
dc.relation.no7-
dc.relation.volume95-
dc.identifier.doi10.1080/03067319.2015.1046057-
dc.relation.page618-634-
dc.relation.journalINTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY-
dc.contributor.googleauthorKuchekar, Shashikant R.-
dc.contributor.googleauthorNaval, Ramesh M.-
dc.contributor.googleauthorHan, Sung H.-
dc.relation.code2015002246-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF NATURAL SCIENCES[S]-
dc.sector.departmentDEPARTMENT OF CHEMISTRY-
dc.identifier.pidshhan-
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COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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