Selective Membrane Electrode for Bromide Ion Based on Aza Pyrilium Ion Derivative as a new Ionophore.
محورهای موضوعی : Journal of Physical & Theoretical Chemistry
Hossein Aghaie
1
(not mentioned)
Karim Zare
2
(Not mentioned)
Ali Reza Abedin
3
(Not mentioned)
Mehran Aghaie
4
(Not mentioned)
کلید واژه: Bromide selective electrode, PVC membrane, Azapyrilium salt,
چکیده مقاله :
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 +.
