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PVC membrane potentiometric sensor based on a schiff base for determination of Ho3+ ions
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نویسنده
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tamaddon Atefeh ,Bagheri Sadeghi Hayedeh ,mollaei Somayeh ,Afshar ebrahimi Arash
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منبع
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analytical and bioanalytical electrochemistry - 2014 - دوره : 6 - شماره : 6 - صفحه:676 -687
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چکیده
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Due to the importance of selective determination of the rare earth elements, construction of a novel holmium pvc membrane sensor based on 3-[(pyridine-2- ylmethylene)-amino]-2-thioxo-4-one (pmat) as a neutral carrier, (dbp) as a plasticizer and (ktpclpb) as anionic additive is reported. the sensor has a nernstian slope of 21.0±0.4 mv per decade and a linear dynamic range between 1.0×10-6 and 1.0×10-2 mol l-1. the mentioned sensor can be used in ph range of 4-7.5 and has a detection limit of 7.0×10-7 mol l-1. it has at least 4 weeks applicability life time, possesses the advantages of fast response time, and very good selectivity over a large number of cations, especially for lanthanide ions. the sensor was used as an indicator electrode in the potentiometric titration of fluoride ions of mouthwash with 1.0×10-3 mol l-1 solution of ho3+ ion.
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کلیدواژه
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Holmium ,Ion-Selective Electrode (ISE) ,Potentiometry ,Sensor ,Mouthwash
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آدرس
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islamic azad university, central tehran branch, department of chemistry, ایران, islamic azad university, central tehran branch, department of chemistry, ایران, islamic azad university, central tehran branch, department of chemistry, ایران, islamic azad university, east tehran branch, department of chemistry, ایران
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Authors
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