Santiago de Cuba, Cuba
Santiago de Cuba, Cuba

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Arada Perez M.De.M.L.A.,Eastern University of Cuba | LAndazury Y.S.,Eastern University of Cuba | Cardona M.,Eastern University of Cuba | Aguilera L.,Eastern University of Cuba | Yazdani-Pedram M.,University of Chile
Journal of the Chilean Chemical Society | Year: 2010

l-furoyl-3,3-diethylthiourea was used as a novel neutral carrier in ion selective electrode for copperII detection and determination. The Cu2+ selective plasticized polyvinyl chloride (PVC) membrane electrode exhibited reversible potential responses with Nernstian slope of 29.34± 0.6 mV/decade for Cu2+ ions in the concentration range from l.0×l0-7 to l.0×l0-2 mol/dm3 with a practical detection limit (PDL) of 3.84xl0-7 and lower limit of linear response (LLLR) of 6.l5×l0-7 mol/dm3 and a life-time of 20 days. The response time, pH effect and other characteristics of the electrodes were also studied.


De Los Arada Perez M.A.,Eastern University of Cuba | Yazdani-Pedram M.,University of Chile
Journal of the Chilean Chemical Society | Year: 2013

The construction and evaluation of an all-solid-state type electrode selective to nitrate based on poly(vinyl chloride) (PVC) as polymeric membrane, diethyl phthalate as plasticizer and tetradecilammonium nitrate (TDAN) as positively charged ionophore is reported. The constructed electrode showed fast potentiometric response to nitrate in the concentration range from 10 -6 to 10-2 mol/dm3 with Nernstian slope of -73.15 ± 0.28 mV/decade, response time of 15 seconds and lifetime of 1 month.


Perez M.D.L.A.A.,Eastern University of Cuba | Yazdani-Pedram M.,University of Chile
Journal of the Chilean Chemical Society | Year: 2013

ABSTRACT Chloride selective polymeric liquid membrane electrode has been developed by using Bis-(2-ethylhexyl) Sebacate (DOS) as plasticizer and 2-[5-(4-nitrophenyl) furyl]-4,5-diphenyl imidazole (FFDFIN) as ionophore. Some parameters of evaluation of the electrode are presented in this work. The constructed electrode showed fast potentiometric response to chloride ion in the concentration range from 10-6 to 10-2 mol.dm-3 with Nernstian slope of -63.43 ± 0.85 mV/decade, response time of 25 seconds and life time of 15 days.

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