Construction of New Ion Selective Electrodes for Determination Fe(III) and Their Application in Pharmaceutical samples

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Khaleda H. Al-Saidi
Weaam R. Aziz

Abstract

Liquid membrane electrodes for the determination iron(III) were constructed based on chloramphenicol sodium succinate and iron(III) CPSS-Fe(III) as ion pair complex, with four plasticizers Di-butyl phosphate (DBP); Di-butyl phthalate (DBPH); Di-octyl phthalate (DOP); Tri-butyl phosphate (TBP); in PVC matrix . These electrodes give Nernstian and sub-Nernstian slopes (19.79, 24.60, 16.01 and 13.82mV/decade) and linear ranges from (1x10-5-1x10-2 M, 1x10-5-1x10-2 M, 1x10-6-1x10-2 M and 1x10-5-1x10-2 M) respectively. The best electrode was based on DBP plasticizer which gave a slope 19.79 mV/decade, correlation coefficient 0.9999, detection limit of 9×10-6 M, lifetime 37 day displayed good stability and reproducibility and used to determine iron(III) in pharmaceutical samples. The selectivity coefficient interferences of (K+, Na+, Cu+2, Mn+2, Zn2+, Al3+,Folic acid) were studied using separate and mixed methods for selectivity coefficient determination. The pH and life time of the electrodes were also studied.

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Construction of New Ion Selective Electrodes for Determination Fe(III) and Their Application in Pharmaceutical samples. Baghdad Sci.J [Internet]. 2013 Dec. 1 [cited 2024 Mar. 29];10(4):1211-7. Available from: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2834
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How to Cite

1.
Construction of New Ion Selective Electrodes for Determination Fe(III) and Their Application in Pharmaceutical samples. Baghdad Sci.J [Internet]. 2013 Dec. 1 [cited 2024 Mar. 29];10(4):1211-7. Available from: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2834

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