Direct determination of aluminium in foods and pharmaceutical preparations by potentiometry using an AlMCM-41 modified polymeric membrane sensor

2010 ◽  
Vol 55 (23) ◽  
pp. 6946-6952 ◽  
Author(s):  
Majid Arvand ◽  
Maryam Kermanian ◽  
Mohammad A. Zanjanchi
Keyword(s):  
Direct Determination ◽  
Pharmaceutical Preparations ◽  
Polymeric Membrane ◽  
Membrane Sensor

scholarly journals Membrane Sensors for the Selective Determination of Donepezil Hydrochloride

2010 ◽  
Vol 93 (2) ◽  
pp. 549-555 ◽  
Author(s):  
Gamal Abdel Hafiz Mostafa ◽  
Mohamed Hefnawy ◽  
Abdulrahman Al-Majed
Keyword(s):  
Direct Determination ◽  
Pharmaceutical Preparations ◽  
Ion Association ◽  
Phosphomolybdic Acid ◽  
Hplc Method ◽  
Pvc Membrane ◽  
Selective Determination ◽  
Response Characteristics ◽  
Sodium Tetraphenyl Borate

Abstract The construction and electrochemical response characteristics of polyvinylchloride (PVC) membrane sensors for donepezil HCl (DP) are described. The sensing membranes incorporated ion-association complexes of DP cation and sodium tetraphenyl borate (sensor 1), phosphomolybdic acid (sensor 2), or phosphotungstic acid (sensor 3) as electroactive materials. The sensors displayed a fast, stable, and near-Nernstian response over a relatively wide DP concentration range (1 102 to 1 106 M), with cationic slopes of 53.0, 54.0, and 51.0 mV/ concentration decade over a pH range of 4.0 to 8.0. The sensors showed good discrimination of DP from several inorganic and organic compounds. The direct determination of 2.54000.0 g/mL DP showed average recoveries of 99.0, 99.5, and 98.5, and mean RSDs of 1.6, 1.5, and 1.7 at 100.0 g/mL for sensors 1, 2, and 3, respectively. The proposed sensors have been applied for direct determination of DP in two pharmaceutical preparations. The results obtained for determination of DP in tablets using the proposed sensors compared favorably with those obtained using an HPLC method. The sensors have been used as indicator electrodes for potentiometric titration of DP.

scholarly journals Utility of Nickel for Atomic Absorption Spectrophotometric Determination of Selected Acidic Drugs

2001 ◽  
Vol 69 (2) ◽  
pp. 189-201 ◽  
Author(s):  
Hesham Salem ◽  
Khadiga Kelani ◽  
Abdalla Shalaby
Keyword(s):  
Atomic Absorption ◽  
Diclofenac Sodium ◽  
Direct Determination ◽  
Pharmaceutical Preparations ◽  
Accurate Method ◽  
Flufenamic Acid ◽  
Indirect Determination ◽  
Acidic Drugs ◽  
Precision And Accuracy

A simple and accurate method is described for the quantitative determination of flufenamic acid, mefenamic acid, tranexamic acid, furosemide, diclofenac sodium and thiaprofenic acid by precipitation reactions with nickel(II) followed by direct determination of the ions in the precipitate or indirect determination of the ions in the filtrate by atomic absorption spectroscopy. Statistical analysis of the results compared to assays used in pharmacopeas and the Amax. methods revealed equal precision and accuracy. Furthermore the assays were also applied for the determination of these drugs in pharmaceutical preparations.

Development of Polymeric Membrane Sensor for the Determination of Histamine: Experimental and Theoretical Study

2008 ◽  
Vol 41 (4) ◽  
pp. 619-639 ◽  
Author(s):  
M. Javanbakht ◽  
M. R. Ganjali ◽  
P. Norouzi ◽  
M. Abdouss ◽  
S. Riahi
Keyword(s):  
Theoretical Study ◽  
Polymeric Membrane ◽  
Membrane Sensor

Modified Screen-Printed Ion Selective Electrodes for Potentiometric Determination of Sodium Dodecylsulfate in Different Samples

2015 ◽  
Vol 98 (1) ◽  
pp. 116-123 ◽  
Author(s):  
Tamer Awad Ali ◽  
Gehad G Mohamed
Keyword(s):  
Response Times ◽  
Inorganic Compounds ◽  
Cetylpyridinium Chloride ◽  
Sodium Dodecylsulfate ◽  
Direct Determination ◽  
Pharmaceutical Preparations ◽  
Ion Association ◽  
Potentiometric Determination ◽  
Screen Printed

Abstract Fabrication and general performance characteristics of novel screen-printed sensors for potentiometric determination of sodium dodecylsulfate (SDS) are described. The sensors are based on the use of ion-association complexes of SDS with cetylpyridinium chloride (electrode I) and cetyltrimethylammonium bromide (electrode II) as exchange sites in a screen-printed electrode matrix. Electrodes (I) and (II) show fast, stable, and near-Nernstian response for the mono-charge anion of SDS over the concentration range of1 × 10–2 – 5.8 × 10–7 and 1 × 10–2 – 6.3 × 10–7 mol/L at 25°C and the pH range of 2.0–9.0 and 2.0–8.0 with anionic slope of 57.32 ± 0.81 and 56.58 ± 0.65 mV/decade, respectively. Electrodes (I) and (II) have lower LODs of 5.8 × 10–7 and 6.3 × 10–7 mol/L and response times of about 8 and 13 s, respectively. Shelf life of5 months for both electrodes is adequate. Selectivity coefficients of SDS related to a number of interfering cations, and some inorganic compounds were investigated. There were negligible interferences causedby most of the investigated species. The direct determination of 0.10–13.50 mg of SDS by electrodes (I) and (II) shows average recoveries of 99.96 and 99.85%, and mean RSDs of 0.83 and 1.04%, respectively. In the present investigation, both electrodes were used successfully as end point indicators for determination of SDS in pure pharmaceutical preparations and real spiked water samples. The results obtained using the proposed sensors to determine SDS in solution compared favorably with those obtained by thestandard addition method.

Modified carbon paste and polymeric membrane electrodes for determination of hydroxychloroquine sulfate in pharmaceutical preparations and human urine

RSC Advances ◽  
2015 ◽  
Vol 5 (102) ◽  
pp. 83657-83667 ◽  
Author(s):  
M. M. Khalil ◽  
Y. M. Issa ◽  
G. A. El Sayed
Keyword(s):  
Human Urine ◽  
Pharmaceutical Preparations ◽  
Polymeric Membrane ◽  
Membrane Electrodes ◽  
Sodium Tetraphenylborate ◽  
Carbon Paste

This article describes characteristics, performance and application of hydroxychloroquine (HCQ) polymeric membrane (PMEs) and modified carbon paste (CPEs) electrodes which are based on sodium tetraphenylborate (NaTPB) or ammonium reineckate (Rt) as sensing materials.

Polymeric membrane sensor for potentiometric determination of vanadyl ions

2004 ◽  
Vol 527 (2) ◽  
pp. 169-175 ◽  
Author(s):  
M. Moghimi ◽  
M.A. Bagherinia ◽  
M. Arvand ◽  
M.A. Zanjanchi
Keyword(s):  
Potentiometric Determination ◽  
Polymeric Membrane ◽  
Membrane Sensor

Potentiometric Membrane Sensor for the Selective Determination of Pethidine in Pharmaceutical Preparations and Biological Fluids

2007 ◽  
Vol 97 (10) ◽  
pp. 1065-1074 ◽  
Author(s):  
Abdalla Shalaby ◽  
Maha El-Tohamy ◽  
Magda El-Maamly ◽  
Hassan Y. Aboul-Enein
Keyword(s):  
Biological Fluids ◽  
Pharmaceutical Preparations ◽  
Membrane Sensor ◽  
Selective Determination

New Polymeric Membrane Sensor Doped with N,N’-Bis(benzoin)-1,2-Phenylenediamine for Selective Determination of Aluminum

2012 ◽  
Vol 466-467 ◽  
pp. 336-341 ◽  
Author(s):  
Xin Lu Liu ◽  
Bin Xie ◽  
Xun Hai Pan ◽  
Kang Quan Qiao ◽  
Ying Wang
Keyword(s):  
Fast Response ◽  
Polymeric Membrane ◽  
Indicator Electrode ◽  
Response Mechanism ◽  
Neutral Carrier ◽  
Membrane Sensor ◽  
Selective Determination ◽  
Impedance Technique ◽  
Ph Range

A new polymeric membrane sensor for Al3+based on bis(benzoin)-1,2-phenylenediamine as a neutral carrier was investigated. The proposed sensor exhibits a near-Nernstian response for Al3+over a wide linear range of 3.0×10-7to 1.0×10-1mol/L, with a detection limit of 1.0×10-7mol/L and a slope of 19.7±0.3 mV/decade. The sensor displays a good selectivity toward Al3+over other cations in pH range of 2.5 to 4.0. It has relatively fast response time (8 s) and can be used at least for 3 months without considerable divergence in potential. The response mechanism was discussed in view of the A.C. impedance technique. It was successfully used as an indicator electrode in the determination of aluminum in real samples.

Sign in / Sign up

Export Citation Format

Share Document