New Screen‐Printed Ion‐Selective Electrodes for Potentiometric Titration of Cetyltrimethylammonium Bromide in Different Civilic Media

Abstract

The performance of home-made printed carbon ink in the fabrication of a simple screen-printed carbon paste electrodes (SPCPEs) was studied. Such electrodes are applied for the potentiometric titration and hence determination of cetyltrimethylammonium bromide (CTAB) in different pharmaceuticals and water samples. The performances of the new screen printed electrodes towards CTAB are compared with those for carbon paste, coated-wire, coated graphite and polyvinyl chloride electrodes. SPCPEs have been successfully used for the potentiometric titration of CTAB in the analytical grad solutions, with a potential jump amounts to 1050 mV. The effect of plasticizer type, carbon content, binding materials, printing ink formulation, response time and printing process are optimized. The method is applied for pharmaceutical preparations with a percentage recovery of 99.20 % and RSD = 0.45. The electrodes passes a near-Nernstian cationic slope of 58.70 AE 1.3 and 56.32 AE 2.4 mV and lower detection limit of 6.8 10 À7and 5.80 10 À7 M with a reproducibility of 0.145 and 3.25 % and response time of about 3 s and exhibit adequate shelf-life of 6 and 2 months for SPCPE and CPE, respectively. The frequently used CTAB of analytical and technical grade as well as different water samples has been successfully titrated and the results obtained agreed with those obtained with commercial electrode and standard two phase titration method. The sensitivity of the proposed method is comparable with the official method indicating its possibility to be used in field measurements.

Novel screen‐printed electrode for the determination of dodecyltrimethylammonium bromide in water samples

“…Modified SPEs were printed in arrays of six couples consisting of the working electrodes (each 5 × 35 mm) following the procedures previously described (Supplementary Figure 1) . A polyvinyl chloride flexible sheet (0.2 mm) was used as a substrate which was not affected by the curing temperature or the ink solvent and easily cutted by scissors.…”

“…The potentiometric screen-printed electrodes (SPE) have been used in pharmaceutical, biological analysis and water samples. [9][10][11][12][13][14][15] This is mainly due to their simple design, low cost, adequate selectivity, good accuracy, wide concentration range, and applicability to coloured and turbid solutions. However, a thorough literature survey has revealed no methods involving selective electrodes for the determination of DTAB.…”

Determination of Surfactants in Environmental Samples. Part I. Cationic Compounds / Oznaczanie Surfaktantów W Próbkach Środowiskowych. Część I. Związki Kationowe

“…This technique is based on the changes in electromotive force of solution in measuring cell after the addition of the titrant. During measurement are used ion-selective electrodes for estimation of endpoint of titration, which are made with different materials (polyvinyl chloride membranes, carbon paste electrodes, coated wire, coated graphite electrodes) [41]. The difficulties with production of electrodes (manual) and their durability, reproducibility and stability of signal, the possibility of determination only total concentration of surfactants, high values of LODs and the influence of interference on results are disadvantage related with PT technique [27].…”

Electroanalytical Determination of Doripenem using a Screen-Printed Electrode

“…Three types of the indicator electrodes were prepared depending on the method of fabrication. The fabricated electrodes were stored at 4°C and used directly for the potentiometric measurements (Khaled et al, 2008;Mohamed et al, 2010a;2010b).…”