Construction of a new Cu2+ coated wire ion selective electrode based on 2-((2-(2-(2-(2-hydroxy-5-methoxybenzylidene amino)phenyl)disufanyl)phenylimino)methyl)-4-methoxyphenol Schiff base

Shokrollahi, Ardeshir; Abbaspour, Abdolkarim; Ghaedi, Mehrorang; Haghighi, Azadeh Naghashian; Kianfar, A.H.; Ranjbar, Maryam

doi:10.1016/j.talanta.2010.12.002

Cited by 46 publications

(15 citation statements)

References 55 publications

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“…[43][44][45][46][47][48][49][50][51] It can be concluded from the results in Table 4 that the potentiometric characteristics of this electrode are comparable with previously reported electrodes in most cases. The present sensor contains the advantages of simple operation, low cost, and fast response time.…”

Section: Discussionsupporting

confidence: 87%

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Solid-contact polyvinyl chloride membrane electrode based on the bis[(2-(hydroxyethylimino)phenolato]copper(II) complex for trace level determination of copper ions in wastewater

et al. 2014

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A miniaturized solid-contact polyvinyl chloride membrane electrode based on the bis[(2-(hydroxyethylimino)phenolato]copper(II) complex has been prepared for the determination of Cu(II) ion in real samples. The influence of coating membrane composition, pH, and possible interfering cations on the response of the ion-selective electrode was investigated. A number of membranes at different compositions were prepared and their Cu 2+ sensing capabilities were investigated. The best results for Cu 2+ sensing was obtained for the electrode membrane containing ionophore − 2-nitrophenyloctyl ether -polyvinyl chloride and potassium tetrakis(p-chlorophenyl)borate in a ratio of 4:65:30:1 (w/w, mg), respectively. The prepared electrode exhibited a near-Nernstian response (28.3 mV/decade) to Cu 2+ in the concentration range from 1.0 × 10 −6 to 1.0 × 10 −1 mol/L with a limit of detection of 8.3 × 10 −7 mol/L. The potentiometric response of the electrode was independent from the pH of the test solution in the pH range of 3.0-6.0. The electrode has a very short response time, about 15 s, and it can be used over a period of 3 months without any divergence in potential. The electrode has been successfully applied as an indicator electrode in potentiometric titration of Cu(II) ions with ethylenediaminetetraacetic acid and in the determination of Cu(II) in wastewater of the copper processing industry.Résumé : Une électrode miniaturisée à contact solide recouverte d'une membrane de chlorure de polyvinyle, à base du complexe bis-[(2-(hydroxyéthylimino)phenolato]cuivre(II) a été préparée afin de déterminer la concentration de Cu(II) dans desun échan-tillons réels. L'influence de la composition de la membrane enveloppante, du pH et d'éventuels cations interférents sur l'électrode sélective d'ion a été étudiée. Plusieurs de compositions différentes ont été préparées et leur capacité à détecter le Cu 2+ explorée. Les meilleurs résultats de détection du Cu 2+ ont été obtenus avec la membrane d'électrode composée d'un soluté ionophore, de 2-nitrophényl octyl éther, de chlorure de polyvinyle et de tétrakis(p-chlorophényl)borate de potassium dans des proportions respectives de 4:65:30:1 (fraction massique avec masses exprimées en mg). L'électrode préparée a donné une réponse quasi Nernstienne (28,3 mV/décade) en présence de Cu 2+ dans des concentrations comprises entre 1 × 10 −6 et 1 × 10 −1 mol/L, la limite de détection se situant à 8,3 × 10 −7 mol/L. La réponse potentiométrique de l'électrode était indépendante du pH de la solution d'essai lorsque le pH était compris entre 3,0 et 6,0. L'électrode a un temps de réponse très court, d'environ 15 s et peut être utilisée pendant 3 mois sans présenter la moindre divergence de potentiel. L'électrode a été utilisée avec succès comme électrode indicatrice pour le titrage potentiométrique d'ions Cu(II) en présence d'acide éthylène diamine tétraacétique et pour le dosage du Cu(II) dans les eaux usées produites par l'industrie de transformation du cuivre. [Traduit par la Rédaction] Mots-clés : potentiom...

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Section: Discussionsupporting

confidence: 87%

“…Its wide industrial, agricultural, and domestic use has increased copper concentration in the environment. 1,2 On the other hand, copper is an essential element that is present in all organisms. Small quantities of copper can be tolerated by humans; however, excessive dosage and long-term exposure may cause imbalance in cellular processes.…”

Section: Introductionmentioning

confidence: 99%

Solid-contact polyvinyl chloride membrane electrode based on the bis[(2-(hydroxyethylimino)phenolato]copper(II) complex for trace level determination of copper ions in wastewater

et al. 2014

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“…27,28 Our group has successfully used this program for calculating the stability constants for copper complexes of a new thio Schiff base. 29 The best fits to the spectrophotometric data show that two complexes for Cu 2+ ion, were obtained, these being CuL (ε = 1. Figure 2c, and 2f).…”

Section: Study Of Complexation Between Bhah Ligand and Metal Ionsmentioning

confidence: 91%

Sodium dodecyl sulfate coated γ-alumina support modified by a new Schiff base for solid phase extraction and flame-AAS determination of lead and copper ions

et al. 2013

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Recebido em 21/3/13; aceito em 16/5/13; publicado na web em 25/7/13 A simple and fast approach for solid phase extraction is herein described, and used to determine trace amounts of Pb 2+ and Cu 2+ metal ions. The solid phase support is sodium dodecyl sulfate (SDS)-coated γ-alumina modified with bis(2-hydroxy acetophenone)-1,6-hexanediimine (BHAH) ligand. The adsorbed ions were stripped from the solid phase by 6 mL of 4 M nitric acid as eluent. The eluting solution was analyzed by flame atomic absorption spectrometry (FAAS). The sorption recovery of metal ions was investigated with regard to the effects of pH, amount of ligand, γ-alumina and surfactant and the amount and type of eluent. Complexation of BHAH with Pb 2+ or Cu 2+ ions was examined via spectrophotometry using the HypSpec program. The detection limit for Cu 2+ was 7.9 µg L -1 with a relative standard deviation of 1.67%, while that for Pb 2+ was 6.4 µg L -1 with a relative standard deviation of 1.64%. A preconcentration factor of 100 was achieved for these ions. The method was successfully applied to determine analyte concentrations in samples of liver, parsley, cabbage, and water.

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“…7B inset). [44][45][46][47][48][49] Interference tests Interestingly, the calibration curve no longer obeys the static quenching rule based on Poisson statistics, 43 that the Cu 2+ concentration is proportional to the ECL signal not its inverse value (Fig.…”

Section: Quantication Of Ecl Sensor and Analytical Performancementioning

confidence: 99%

Chronopotentiometric synthesis of quantum dots with efficient surface-derived near-infrared electrochemiluminescence for ultrasensitive microchip-based ion-selective sensing

Deng

Zhang

et al. 2014

RSC Adv.

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A novel QD with near-infrared (NIR) electrochemiluminescence (ECL) emission was prepared electrolytically by hydrodynamic chronopotentiometry, using Unithiol, a clinically-known metalantidote, as the capping agent for the fabrication of an ultrasensitive ion-selective microchip. The proposed synthetic route as well as the optical properties of QD was clarified with both morphological and spectroscopic characterization. In air-saturated pH 8.0 phosphate buffer with dissolved oxygen as the endogenous coreactant, an intensive NIR-ECL emission at 692 nm arose which was ascribed to the unique surface states of multidentate-chelated QDs. By tuning electrolytes, a low-potential ECL peaking at À0.79 V (vs. Ag/AgCl) could further be achieved. Based on the validated competition of heavy metallic cations with the stabilizer Unithiol as it stabilizes the aqueous dispersion of QDs, the ECL emission could be significantly quenched and a home-made ECL ion-selective chip was manufactured. It was further found that capping with a cation exchange membrane enabled accelerated adsorption of metal ions and sensitized the ECL signal. Using cupric cations as a model analyte, the devised sensor showed a linear range from 10.0 pM to 1.0 mM with a detection limit down to 6.7 pM, and was successfully used in the direct detection of a Bordeaux mixture with an inorganic pesticide residue on the grape skin with high accuracy and selectivity. The proposed strategy could also be extended to quantify Hg 2+ and Pb 2+ with stronger thiol-bonding capability than Cd 2+ . The developed microsensing system with replicable onestep synthesis should facilitate portable and integrated QD-based NIR-ECL applications for food hygiene inspection and environmental monitoring.

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Construction of a new Cu2+ coated wire ion selective electrode based on 2-((2-(2-(2-(2-hydroxy-5-methoxybenzylidene amino)phenyl)disufanyl)phenylimino)methyl)-4-methoxyphenol Schiff base

Cited by 46 publications

References 55 publications

Solid-contact polyvinyl chloride membrane electrode based on the bis[(2-(hydroxyethylimino)phenolato]copper(II) complex for trace level determination of copper ions in wastewater

Solid-contact polyvinyl chloride membrane electrode based on the bis[(2-(hydroxyethylimino)phenolato]copper(II) complex for trace level determination of copper ions in wastewater

Sodium dodecyl sulfate coated γ-alumina support modified by a new Schiff base for solid phase extraction and flame-AAS determination of lead and copper ions

Chronopotentiometric synthesis of quantum dots with efficient surface-derived near-infrared electrochemiluminescence for ultrasensitive microchip-based ion-selective sensing

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Construction of a new Cu2+ coated wire ion selective electrode based on 2-((2-(2-(2-(2-hydroxy-5-methoxybenzylidene amino)phenyl)disufanyl)phenylimino)methyl)-4-methoxyphenol Schiff base

Cited by 46 publications

References 55 publications

Solid-contact polyvinyl chloride membrane electrode based on the bis[(2-(hydroxyethylimino)phenolato]copper(II) complex for trace level determination of copper ions in wastewater

Solid-contact polyvinyl chloride membrane electrode based on the bis[(2-(hydroxyethylimino)phenolato]copper(II) complex for trace level determination of copper ions in wastewater

Sodium dodecyl sulfate coated &#947;-alumina support modified by a new Schiff base for solid phase extraction and flame-AAS determination of lead and copper ions

Chronopotentiometric synthesis of quantum dots with efficient surface-derived near-infrared electrochemiluminescence for ultrasensitive microchip-based ion-selective sensing

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Product

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Sodium dodecyl sulfate coated γ-alumina support modified by a new Schiff base for solid phase extraction and flame-AAS determination of lead and copper ions