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(searched for: (10.5155/eurjchem.4.2.124-131.741))
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Mohammad Abdalla El-Sayed
European Journal of Chemistry, Volume 4; https://doi.org/10.5155/eurjchem.4.2.124-131.741

Abstract:
Novel miniaturized polyvinyl chloride membrane sensors in all-solid state graphite and platinum wire supports were developed, electrochemically evaluated and used for the assay of naftidrofuryl oxalate. The naftidrofuryl oxalate sensors were based on the formation of an ion-association complex between the drug cation and tetrakis-(4-chlorophenyl)borateanionic exchanger as electroactive material and sulfocalix-8-arene as ionophore dispersed in a polyvinyl chloride matrix. Linear responses of 10-2-10-6 M and 10-2-10-5 M with cationic slopes of 56.9 mV and 54.1 mV over the pH range 2-5 were obtained by using the naftidrofuryl oxalate-coated graphite (Sensor 1) and platinum wire (Sensor 2) membrane sensors, respectively. The utility of 4-sulfocalix-8-arene as ionophore had a significant influence on increasing the membrane sensitivity and selectivity. The methods were also used to determine the intact drug in the presence of it’s degradate in Praxilene® tablets, plasma and cerebrospinal fluid with good recovery. Sensor 1 was used to study the kinetics of naftidrofuryl oxalate alkaline degradation that was found to follow a pseudo first-order reaction. The activation energy could be estimated from the Arrhenius plot to be 12.572 Kcal/mol.
Huang Yuanyuan, Bai Fang, Gao Guowei, Men Jian
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Riya Dattaa, Ramya Vittalacharya, Bubbly S Gudennavar
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Ikram Dhouib, Philippe Guionneau, Stanislav Pechev, Tahar Mhiri, Zakaria Elaoud
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S. Saeed, N. Rashid, P. Jones, R. Hussain
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E.A. El-Sawi, T.B. Mostafa, H.A. Radwan
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A. Saeed, H. Rafique, U. Florke
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Z.Z. Donia, H. Boughzala, A. Driss
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A. Saeed, A. Mumtaz, U. Florke
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J.N. Low, L.M.N.B.F. Santos, C.F.R.A.C. Lima, P. Brandao, L.R. Gomes
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John Nicholson Low
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M.A. Mohamed, E.K.A. Abdelall, Y.H. Zaki, A.O. Abdelhamid
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M.A. El-Apasery, S.M. Al-Mousawi, M.H. Elnagdi
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G. Binzet, U. Florke, N. Kulcu, H. Arslan
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A. Hameed, A. Anwar, S. Yousaf, K.M. Khan, F.Z. Basha
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A. Hameed, A. Anwar, S. Yousaf, K.M. Khan, F.Z. Basha
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G. Binzet, U. Florke, N. Kulcu, H. Arslan
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M. Ziaulla, M.N. Manjunatha, K.R. Nagasundra, N.S. Begum
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S. Saeed, N. Rashid, M. Ali, R. Hussain, P. Jones
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Vitor H. Rodrigues, Maria M. R. R. Costa, Etelvina M. Gomes, Dmitry Isakov, Michael S. Belsley
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Susma Das, Shilpika Khanikar, Shunan Kaping, Jayanti Datta Roy, Arnab Sen, Philippe Helissey
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Kazuki Ogata, Atsushi Nagasawa, Noriyuki Yonezawa, Akiko Okamoto
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Anastasiia M. Mishura, Anna S. Sklyarova, Dmitriy I. Sharapa, Igor’ A. Levandovsky, Michael Serafin, Andrey A. Fokin, Vladimir N. Rodionov
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Ikram Dhouib, Philippe Guionneau, Tahar Mhiri, Zakaria Elaoud
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Federica Castriconi, Marco Paolino, Germano Giuliani, Maurizio Anzini, Giuseppe Campiani, Laura Mennuni, Chiara Sabatini, Marco Lanza, Gianfranco Caselli, Francesca De Rienzo, et al.
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Masaki Ichitani, Soh-Ichi Kitoh, Keiko Tanaka, Shuhei Fujinami, Mitsuhiro Suda, Mitsunori Honda, Akio Kuwae, Kazuhiko Hanai, Ko-Ki Kunimoto
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Iryna O. Lebedyeva, Sean M. Sileno, Kunal Patel, Ion Ghivririga, Peter J. Steel, Alan R. Katritzky
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K. Ramalingam, R. Thiruneelakandan, G. Bocelli, L. Righi
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Z. Repicka, M. Puchonova, L. Husarikova, J. Moncol, M. Koman, M. Mazur, D. Valigura
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M. Ghandi, P. Asgari, A. Taheri, A. Abbasi
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Patrick Ferland, Kathleen E. Prosser, Jeremy L. Bourque, Ian C. Edwards, Nathan S. Hamilton, Lori E. Joyce, Mathew C. Finniss, Scott R. Yorke, Christopher M. Vogels, Frédéric-Georges Fontaine, et al.
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Patrick Ferland, Kathleen E. Prosser, Jeremy L. Bourque, Ian C. Edwards, Nathan S. Hamilton, Lori E. Joyce, Mathew C. Finniss, Scott R. Yorke, Christopher M. Vogels, Frédéric-Georges Fontaine, et al.
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Andrii Vakulka, Evgeny Goreshnik
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Andrii Vakulka, Evgeny Goreshnik
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E.S. Aazam, M.P. Coles
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K.A. Al-Farhan, I. Warad, S.I. Al-Resayes, M.M. Fouda, M. Ghazzali
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J.L.S. Doimeadios
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S. Saeed, N. Rashid, P.G. Jones, R. Hussain, M.H. Bhatti
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W. Ginzinger, V.B. Arion, G. Giester, M. Galanski, B.K. Keppler
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P.T. Todorov, R.N. Petrova, E.D. Naydenova, B.L. Shivachev
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Agnieszka Chylewska, Artur Sikorski, Aleksandra Dąbrowska, Lech Chmurzyński
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M. Toma, A. Sanchez, M.S. Gracia-Tasende, J.S. Casas, J. Sordo, E.E. Castellano, J. Ellena
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M. Toma, A. Sanchez, M.S. Gracia-Tasende, J.S. Casas, J. Sordo, E.E. Castellano, J. Ellena
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Yu.M. Chumakov, Yu.A. Simonov, M. Grozav, M. Crisan, G. Bocelli, A.A. Yakovenko, D. Lyubetsky
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Yu.M. Chumakov, Yu.A. Simonov, M. Grozav, M. Crisan, G. Bocelli, A.A. Yakovenko, D. Lyubetsky
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M. Sladkovicova, P. Mach, L. Smrcok, H. Rundlof
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A. Ahmedova, M.G.F. Vaz, S. Ciattini, G. Gochev, A. Caneschi, M. Mitewa
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M. Toma, A. Sanchez, J.S. Casas, J. Sordo, M.S. Garcia-Tasende, E.E. Castellano, J. Ellena, I. Berdan
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Matthew Wood, Ivan Bernal, Roger Lalancette
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