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Development of Chloride Electrode Coated Wire and Composite Systems for Determination Chloride Ion in Gunungkidul Spring Water
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作者 Suyanta Sunarto Susila Kristianingrum Tanti Hidayah 《Journal of Chemistry and Chemical Engineering》 2014年第7期662-667,共6页
The purpose of this research was to fmd out effectiveness of chloride solid membrane electrode of coated wire system compared to solid membrane electrode of composite system, the Nernstian response and character's po... The purpose of this research was to fmd out effectiveness of chloride solid membrane electrode of coated wire system compared to solid membrane electrode of composite system, the Nernstian response and character's potential response (detection limit, selectivity and response time). The chloride ISEs (ion selective electrodes) in this research were the solid membrane chloride ISEs based AgC1. There were two types of chloride ISEs that were developed, namely the chloride ISEs of coated wire and composite systems. Both types of electrodes were characterized. The selectivity was done by comparing Esel of the chloride standard solutions and Esel of the interference ions (Br- and I-). The measurement of chloride ions in water samples was done by using the coated wire chloride ISE, the composite chloride ISE and the Mohr method. We compared the result of the two chloride ISE methods to that of standard method for chloride determination (Mohr) by using F-test and Post Hoc Test LSD (least significant difference) and Duncan. Analysis by using F-test and Post Hoc Test (LSD and Duncan) and characterization results of both the methods showed that coated wire chloride ISE was more effective compared to composite chloride ISE. Nemstian response was 59.83 mV/decade, linier range measurement was 10-1-10-5 M, limit detection was 1.23 × 10-5 M, response time along was 25 s and interfering ion was 10-4 M Br-. 展开更多
关键词 Chloride ISEs coated wire electrode composite electrode Gunungkidul spring water.
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Electrochemical Determination of Dapoxetine HCI in Biological Fluids Using Coated Wire Electrode
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作者 Amani Salim Alturiqi 《Journal of Chemistry and Chemical Engineering》 2016年第6期277-282,共6页
Coated wire sensor for potentiometric determination ofDAP (dapoxetine HCI) in pure form and in biological fluidsbased on DAP-TPB (dapoxetine-tetraphenyl borate) as the sensing element in the presence of DOP (dioc... Coated wire sensor for potentiometric determination ofDAP (dapoxetine HCI) in pure form and in biological fluidsbased on DAP-TPB (dapoxetine-tetraphenyl borate) as the sensing element in the presence of DOP (dioctylphthalate) as the plasticizing solvent mediator was prepared. The best performance was obtained with a membrane composition of 10.0% (w/w) ion-pair, 45.0% DOP (w/w) and 45.0% PVC (w/w). The electrode showed a Nemstian response (with a slope of 58.70 mV decade-1) for the concentration range of 4.2 × 10-5-1.0 ×10-2 mol/L. It illustrates a relatively fast response time in the whole concentration range (-15 s) in a pH range of 3.0-7.5. The selectivity coefficients were determined in relation to several inorganic and organic species. DAP is determined successfully in pure solutions and in biological fuids using the standard additions and petentiometric titrations methods. 展开更多
关键词 DAP coated wire electrode biological fluids.
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Development of new potentiometric sensors for the determination of proguanil hydrochloride in serum and urine 被引量:1
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作者 Fatehy M.Abdel-Haleem Mohamed Saad Mohamed S.Rizk 《Chinese Chemical Letters》 SCIE CAS CSCD 2016年第6期857-863,共7页
Potentiometric electrodes were developed for the rapid determination of proguanil hydrochloride in pure samples, pharmaceutical preparations and spiked serum and urine samples using PVC membrane,screen printed(SPE),... Potentiometric electrodes were developed for the rapid determination of proguanil hydrochloride in pure samples, pharmaceutical preparations and spiked serum and urine samples using PVC membrane,screen printed(SPE), coated wired(CWE), carbon paste(CPE) and modified carbon paste(MCPE)electrodes based on the ion-exchanger of proguanil with phosphotungestic acid(Pr-PT) as a chemical modifier. The prepared electrodes showed Nernestian slopes of 59.7, 58.1, 58.5, 58.5 and 57.0 for the PVC,SPE, CWE, CPE and MCPE for the proguanil ions in a wide concentration range of 1.0 * 10^-5–1.0 * 10^-2mol L^-1 at 25°C with detection limits of 7.94 * 10^-6, 1.0 * 10^-5, 1.0 * 10^-6, 7.07 * 10^-6 and 2.5 * 10^-6 mol L^-1, respectively. The prepared electrodes exhibited high proguanil selectivity in relation to several inorganic ions and sugars and they could be successfully utilized for its determination in pure solutions, pharmaceutical preparations and serum and urine samples using the direct potentiometry and standard addition methods with very good recovery values. 展开更多
关键词 Proguanil hydrochloride PVC membrane electrode Carbon paste electrode Screen printed electrode MWCNTS coated wire electrode
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