COATED WIRE LEAD ION SELECTIVE ELECTRODE BASED ON DITHIZONE | ||||
| Al-Azhar Bulletin of Science | ||||
| Article 5, Volume 2011, Issue 12, December 2011, Page 45-52 PDF (140.55 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/absb.2011.7016 | ||||
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| Authors | ||||
| Ali M. HASSAN1; SOHAIR A. ELREEFY2; AHMED RAGAA ELSALAMOUNY3 | ||||
| 1Chemistry department, Faculty of Science Al-Azhar University, Cairo, Egypt | ||||
| 2Hot Labs Center, Atomic Energy Authority, Cairo, Egypt | ||||
| 3Chemistry Department, Faculty of Science Al-Azhar University, Cairo, Egypt | ||||
| Abstract | ||||
| PVC based membrane of 1,5-diphenylthiocarbazone (dithizone) reveals a Nernstain potentiometric response with the slope of 29 + 2 mV per decade for Pb2+ over a concentration range (5.0×10-6-1.0×10-2 M). The used electrode was suitable in aqueous solutions in a pH range of 8 to 10. The response time of the electrode is about 15 s and was used for a period of 45 days. The proposed electrode was used in two different applications such as the determination of lead concentration in a part of lead water pipe and as an indicator electrode for potentiometric titration of Pb2+ions. | ||||
| Keywords | ||||
| Lead ion selective electrode; Potentiometric titration; INDICATOR ELECTRODE | ||||
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