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Using the Ethanolamine-Modified Nanoporous Silica as a PVC Membrane Electrode Modifier to Determination of Lead Ions
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نویسنده
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Hajiaghababaei Leila ,Kazemi Sara ,Badiei Alireza ,Zarabadi-Poor Pezhman ,Ganjali Mohammad Reza ,Mohammadi Ziarani Ghodsi
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منبع
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analytical and bioanalytical electrochemistry - 2012 - دوره : 4 - شماره : 3 - صفحه:246 -261
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چکیده
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A pvc membrane electrode to determination of lead ions based on hydroxymethyl-modified sba-15 nanoporous silica as a carrier was prepared. the electrode exhibits anernstian response for pb2+ over a concentration range (1.0?10-1 to 1.0?10-4 mol l-1) with aslope of 28.9±0.2 mv per decade. the limit of detection of the sensor is 5.5?10-5 mol l-1.the sensor has a relatively fast response time (?10s) and a useful working ph range of 3.5–8.0. interference of some divalent cations was also evaluated. it was used as an indicatorelectrode in potentiometric titration of pb2+ with edta and in direct determination of leadion in wastewater and pepper samples. the results indicate that this electrode is sensitive fordetermination of pb2+.
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کلیدواژه
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Lead ,Hydroxymethyl-Modified Nanoporous Silica ,PVC Membrane Electrode
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آدرس
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islamic azad university, Department of Chemistry, Islamic Azad University, Shahre Rey Branch, Tehran, Iran, ایران, islamic azad university, Department of Chemistry, Islamic Azad University, Shahre Rey Branch, Tehran, Iran, ایران, university of tehran, School of Chemistry, College of Science, University of Tehran, Tehran, Iran, ایران, university of tehran, School of Chemistry, College of Science, University of Tehran, Tehran, Iran, ایران, university of tehran, Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran, ایران, alzahra university, ایران
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Authors
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