A PVC plasticized membrane sensor for nickel ions

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A PVC plasticized membrane sensor for nickel ions

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dc.contributor.author Girish Kumar,K
dc.contributor.author Remalakshmy,Poduval
dc.contributor.author Sareena,John
dc.contributor.author Pearl,Augustine
dc.date.accessioned 2008-07-29T09:46:08Z
dc.date.available 2008-07-29T09:46:08Z
dc.date.issued 2006-05-11
dc.identifier.uri http://dyuthi.cusat.ac.in/purl/512
dc.description.abstract A new PVC membrane sensor, which is highly selective towards Ni (II) ions, has been developed using a thiophene-derivative Schiff base as the ionophore. The best performance was exhibited by the membrane having the composition percentage ratio of 5:3:61:31 (ionophore:NaTPB:DBP:PVC) (w=w), where NaTPB is the anion excluder, sodium tetraphenylborate and DBP is the plasticizing agent (dibutyl phthalate). The membrane exhibited a good Nernstian response for nickel ions over the concentration range of 1.0 10 1– 5.0 10 6M (limit of detection is 1.8 10 6 M) with a slope of 29.5 1.0mV per decade of activity. It has a fast response time of<20 s and can be used for a period of 4 months with good reproducibility. The sensor is suitable for use in aqueous solutions of a wide pH range of 3.2–7.9. The sensor shows high selectivity to nickel ions over a large number of mono-, bi- and trivalent cations. It has been successfully used as an indicator electrode in the potentiometric titration of nickel ions against EDTA and also for direct determination of nickel content in real samples – wastewater samples from electroplating industries and Indian chocolates. en_US
dc.language.iso en en_US
dc.publisher Department of Applied Chemistry en_US
dc.subject Nickel-selective sensor en_US
dc.subject PVC matrix en_US
dc.subject thiophene-derivative Schiff base en_US
dc.subject potentiometry en_US
dc.title A PVC plasticized membrane sensor for nickel ions en_US
dc.type Working Paper en_US


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