Selective Membrane Electrode for Bromide Ion Based on Aza Pyrilium Ion Derivative as a new Ionophore.
الموضوعات : Journal of Physical & Theoretical ChemistryHossein Aghaie 1 , Karim Zare 2 , Ali Reza Abedin 3 , Mehran Aghaie 4
1 - not mentioned
2 - Not mentioned
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4 - Not mentioned
الکلمات المفتاحية: Bromide selective electrode, PVC membrane, Azapyrilium salt,
ملخص المقالة :
A highly selective electrode for Bromide ion based on aza pyrilium derivative as an excellentionophore is described.The sensor exhibits a good linear response with a slope of ( 60±1 ) mV per decadeover the concentration range of ( 1×10-3 9×10-6 M ) , and a detection limit of ( 3×10-6 M ) of Bromideions .The electrode response is independent of pH in the range of(4.0 9.5).Selectivity coefficientsdetermined by the matched potential method ( MPM ) . Indicate that the interference from inorganic andorganic anions is negligible. The proposed sensor shows a fast response time of approximately (20 s).Ithas been used as an indicator electrode in titration of Bromide with Ag +.
