Studies on the potentiometric thallium(III)-selective carbon paste electrode and its possible applications.
Construction, performance characteristics and applications of a carbon paste thallium(III) ion-selective electrode are described. The electrode, which is based on ion-associate compounds formed between cetylpyridinium and chlorothallate(III) complexes dissolved in tricresyl phosphate as pasting liquid, showed near-Nernstian response over the concentration range of 5.8 x 10(-6) - 2.9 x 10(-3) mol/L. Potentiometric titrations of thallium(III) with cetylpyridinium chloride were affected by higher concentrations of excess halides, probably due to the formation of higher halogenothallates.
Vytras
K
K
Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Czech Republic.
Khaled
E
E
Jezková
J
J
Hassan
H N
HN
Barsoum
B N
BN
D002138:Calibration; D004566:Electrodes; D004787:Environmental Pollution / Q000032:analysis; D011199:Potentiometry / Q000295:instrumentation / Q000379:methods; D013793:Thallium / Q000032:analysis*
D013793:Thallium