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Anions Selective Electrodes with Unusual Half Nernstian Response
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نویسنده
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Riad M Safaa ,Rezk R Mamdouh ,khattab I Fatma ,Abd El-Rahman K Mohamed ,Marzouk M Hoda
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منبع
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analytical and bioanalytical electrochemistry - 2014 - دوره : 6 - شماره : 4 - صفحه:392 -402
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چکیده
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Selective poly (vinylchloride) membrane electrodes based on a quaternaryammonium compound, malachite green as a novel ion exchanger for anionic species wereprepared. the developed membrane electrodes were used successfully for the quantificationof sulphadimethoxine, iodide ions and thiocyante ions in their pure powdered forms, fishwater and/or pharmaceutical formulation. linear responses were obtained within aconcentration range of 10-5-10-2 m for the three selected monovalent anionic species. theelectrodes exhibited unusual half nernstian slopes when the divalent cationic malachite greenis used as a novel lipophilic ion exchanger in pvc based membranes for determination ofmonovalent anions. they have fast response times about 20 s, satisfactory reproducibility,and long life times
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کلیدواژه
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Anions selective electrodes ,Fish water ,Half Nernstian response ,Malachite green ,Novel ion exchanger
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آدرس
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Cairo University, Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St , 11562 Cairo, Egypt, Egypt, Cairo University, Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St , 11562 Cairo, Egypt, Egypt, Cairo University, Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St , 11562 Cairo, Egypt, Egypt, Cairo University, Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St , 11562 Cairo, Egypt, Egypt, Cairo University, Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St , 11562 Cairo, Egypt, Egypt
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پست الکترونیکی
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h.marzouk@yahoo.com
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Authors
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