scholarly journals Disposable gold nanoparticle functionalized and bare screen-printed electrodes for potentiometric determination of trazodone hydrochloride in pure form and pharmaceutical preparations

RSC Advances ◽  
2018 ◽  
Vol 8 (21) ◽  
pp. 11517-11527 ◽  
Author(s):  
Fathy M. Salama ◽  
Khalid A. Attia ◽  
Ragab A. Said ◽  
Ahmed El-Olemy ◽  
Ahmed M. Abdel-raoof
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Electrochemical Sensors ◽  
Pharmaceutical Preparations ◽  
Potentiometric Determination ◽  
Chemically Modified ◽  
Screen Printed Electrodes ◽  
Trazodone Hydrochloride ◽  
Screen Printed

In the present study, screen-printed electrodes unmodified and chemically modified with gold nanoparticles were used as sensitive electrochemical sensors for the determination of trazodone hydrochloride.

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.

Septonex–tetraphenylborate screen-printed ion selective electrode for the potentiometric determination of Septonex in pharmaceutical preparations

The Analyst ◽  
2011 ◽  
Vol 136 (7) ◽  
pp. 1488 ◽  
Author(s):  
Gehad G. Mohamed ◽  
M. F. El-Shahat ◽  
A. M. Al-Sabagh ◽  
M. A. Migahed ◽  
Tamer Awad Ali
Keyword(s):  
Pharmaceutical Preparations ◽  
Ion Selective Electrode ◽  
Potentiometric Determination ◽  
Selective Electrode ◽  
Screen Printed

A gold nanoparticle chemically modified gold electrode for the determination of surfactants

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106500-106507 ◽  
Author(s):  
Daniele Merli ◽  
Chiara Ferrari ◽  
Elisa Cabrini ◽  
Giacomo Dacarro ◽  
Piersandro Pallavicini ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Gold Electrode ◽  
Redox Probe ◽  
Chemically Modified

A gold nanoparticles modified gold electrode was developed for the determination of surfactants in solution, using a redox probe and exploiting the tendency of surfactants to adsorb onto the nanoparticles' surface.

Voltammetric Determination of Cocaine Using Carbon Screen Printed Electrodes Chemically Modified with Uranyl Schiff Base Films

2015 ◽  
Vol 28 (2) ◽  
pp. 320-326 ◽  
Author(s):  
Maria Fernanda Muzetti Ribeiro ◽  
José Wilmo da Cruz Júnior ◽  
Edward Ralph Dockal ◽  
Bruce Royston McCord ◽  
Marcelo Firmino de Oliveira
Keyword(s):  
Schiff Base ◽  
Voltammetric Determination ◽  
Chemically Modified ◽  
Screen Printed Electrodes ◽  
Screen Printed
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