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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4147
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dc.contributor.authorSingh A.K.-
dc.contributor.authorMehtab S.-
dc.contributor.authorSingh U.P.-
dc.contributor.authorAggarwal V.-
dc.date.accessioned2020-10-06T14:31:57Z-
dc.date.available2020-10-06T14:31:57Z-
dc.date.issued2007-
dc.identifier.citationAnalytical and Bioanalytical Chemistry (2007), 388(8): 1867-1876-
dc.identifier.issn16182642-
dc.identifier.other17622519-
dc.identifier.urihttps://doi.org/10.1007/s00216-007-1434-5-
dc.identifier.urihttp://repository.iitr.ac.in/handle/123456789/4147-
dc.description.abstractPotassium hydrotris(N-tert-butyl-2-thioimidazolyl)borate [KTt t-Bu] and potassium hydrotris(3-tert-butyl-5-isopropyl-l-pyrazolyl) borate [KTpt-Bu,i-Pr] have been synthesized and evaluated as ionophores for preparation of a poly(vinyl chloride) (PVC) membrane sensor for Zn(II) ions. The effect of different plasticizers, viz. benzyl acetate (BA), dioctyl phthalate (DOP), dibutyl phthalate (DBP), tributyl phosphate (TBP), and o-nitrophenyl octyl ether (o-NPOE), and the anion excluders sodium tetraphenylborate (NaTPB), potassium tetrakis(p-chlorophenyl)borate (KTpClPB), and oleic acid (OA) were studied to improve the performance of the membrane sensor. The best performance was obtained from a sensor with a of [KTt t-Bu] membrane of composition (mg): [KTtt-Bu] (15), PVC (150), DBP (275), and NaTPB (4). This sensor had a Nernstian response (slope, 29.4∈±∈0.2 mV decade of activity) for Zn2+ ions over a wide concentration range (1.4∈×∈10-7 to 1.0∈×∈10-1 mol L-1) with a limit of detection of 9.5∈×∈10-8 mol L-1. It had a relatively fast response time (12 s) and could be used for 3 months without substantial change of the potential. The membrane sensor had very good selectivity for Zn2+ ions over a wide variety of other cations and could be used in a working pH range of 3.5-7.8. The sensor was also found to work satisfactorily in partially non-aqueous media and could be successfully used for estimation of zinc at trace levels in biological and environmental samples. © 2007 Springer-Verlag.-
dc.language.isoen_US-
dc.relation.ispartofAnalytical and Bioanalytical Chemistry-
dc.subjectIon-selective membrane sensors-
dc.subjectPotassium hydrotris(3-tert-butyl-5-isopropyl-l-pyrazolyl) borate-
dc.subjectPotassium hydrotris(N-tert-butyl-2- thioimidazolyl)borate-
dc.subjectPVC membrane-
dc.subjectZinc-selective sensor-
dc.titleTripodal chelating ligand-based sensor for selective determination of Zn(II) in biological and environmental samples-
dc.typeArticle-
dc.scopusid57209223382-
dc.scopusid8954152100-
dc.scopusid57203181883-
dc.scopusid16444161100-
dc.affiliationSingh, A.K., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee 247 667, India-
dc.affiliationMehtab, S., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee 247 667, India-
dc.affiliationSingh, U.P., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee 247 667, India-
dc.affiliationAggarwal, V., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee 247 667, India-
dc.description.fundingAcknowledgement Sameena Mehtab and Vaibhave Aggarwal are grateful to Council of Scientific and Industrial Research, New Delhi, India, for providing financial assistance for this work.-
dc.description.correspondingauthorSingh, A.K.; Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee 247 667, India; email: akscyfcy@iitr.ernet.in-
Appears in Collections:Journal Publications [CY]

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