Author/Authors :
Elsalamouny، Ahmed Ragaa نويسنده Faculty of Science, Al-azhar University, Cairo, Egypt , , Elreefy، Sohair Abd-Elfatah نويسنده Hot Labs Center, Atomic Energy Authority, Cairo, Egypt , , Aly Hassan، Aly Mustafa نويسنده 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.
