Copper(II)-selective electrodes based on macrocyclic polythiaethers

Kamata, Satsuo; Yamasaki, Kuzutomo; Higo, Morihide; Bhale, Ajay; Fukunaga, Yumi

doi:10.1039/an9881300045

Cited by 84 publications

(39 citation statements)

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“…As can be seen, the proposed electrode shows superior selectivity behavior to most reported copper ion-selective electrodes. [4][5][6][7][8][9][10][11] It is also worth noting that the potentiometric response of the proposed sensor was found to be insensitive to the nature of the anions used.…”

Section: Sensor Selectivitymentioning

confidence: 99%

Novel PVC-Based Copper(II) Membrane Sensor Based on 2-(1′-(4′-(1″-Hydroxy-2″-naphthyl)methyleneamino)butyl iminomethyl)-1-naphthol

Golmohammadi¹,

Yousefi²,

Norouzi³

et al. 2003

ANAL. SCI.

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Section: Sensor Selectivitymentioning

confidence: 99%

Novel PVC-Based Copper(II) Membrane Sensor Based on 2-(1′-(4′-(1″-Hydroxy-2″-naphthyl)methyleneamino)butyl iminomethyl)-1-naphthol

Golmohammadi¹,

Yousefi²,

Norouzi³

et al. 2003

ANAL. SCI.

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“…[38][39][40][41] In Table 4, the selectivity coefficients for some common interfering ions of the proposed ions-selective electrodes based on AQ are compared with the corresponding values previously reported for PVC-membrane copper(II)-selective electrodes based on different neutral ionophores. [10][11][12][13][15][16][17] As can be seen, in most cases, the proposed electrodes (especially the CGE) show superior selectivity behavior to the PVC membrane sensors prepared previously. Moreover, the limit of detection obtained with the proposed CGE shows an improvement of over one order of magnitude over the most sensitive copper-selective 878 ANALYTICAL SCIENCES AUGUST 2002, VOL.…”

Section: Potmentioning

confidence: 99%

“…10,12,17,[23][24][25]30,31 Thus, different aspects of membrane preparation based on AQ for Cu 2+ were optimized; the results are summarized in Table 1. It is obvious that a membrane composition of 56% NPOE, 30% PVC, 8% OA and 6% AQ resulted in a CGE of the best sensitivity with a Nernstian slope over a very wide dynamic range.…”

Section: +mentioning

confidence: 99%

A 9,10-Anthraquinone Derivative Having Two Propenyl Arms as a Neutral Ionophore for Highly Selective and Sensitive Membrane Sensors for Copper(II) Ion

Shamsipur

Avanes²,

Javanbakht

et al. 2002

ANAL. SCI.

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The quick determination of trace quantities of cationic species by simple methods is of vital importance in chemical, environmental and industrial analyses. Potentiometric sensors based on solvent polymeric membranes with the incorporation of neutral ionophores have been shown to be very useful tools for these purposes, due to their ease of preparation, simple operation, relatively fast response, reasonable selectivity, wide linear dynamic range and low cost. [1][2][3][4][5] Due to the urgent need for selective copper determinations in many biological, 6,7 geochemical, 8 environmental and industrial samples, 9 the search for new sensitive and selective polymeric membrane sensors for its fast monitoring is still a challenging objective. 4 19 In recent years, we have successfully employed a number of new 9,10-anthraquinone derivatives as very suitable ion carriers in bulk liquid membrane transport 20 and the solid-phase extraction of metal ions, 21,22 in constructing of PVC-membrane ion-selective electrodes [23][24][25] and in stripping voltammetric analysis of lead ion. 26 In this paper we report on highly selective and sensitive solvent polymeric membrane (PME) and membrane-coated graphite electrodes (CGE) for Cu 2+ ion based on 1-hydroxy-2-(prop-2′-enyl)-4-(prop-2′-enyloxy)-9,10-anthraquinone (AQ), recently synthesized in our laboratories, 27 that manifest the properties of an excellent neutral ionophore for copper(II) ions. Experimental ReagentsReagent-grade 2-nitrophenyl octyl ether (NPOE), benzyl acetate (BA) sodium tetraphenylborate (NaTPB), oleic acid (OA), high relative molecular weight PVC and tetrahydrofuran (THF) were purchased from Merck chemical company and used as received. The nitrate salts of the cations used (all from Merck) were of the highest purity available, and used without any further purification, except for vacuum drying over P2O5. Anthraquinone AQ was synthesized and purified as described New polymeric membrane (PME) and coated graphite (CGE) copper(II)-selective electrodes based on 1-hydroxy-2-(prop-2′-enyl)-4-(prop-2′-enyloxy)-9,10-anthraquinone were prepared. The electrodes reveal linear emf-pCu 2+ responses over wide concentration ranges (1.0 × 10 -5 -1.0 × 10 -1 M with a slope of 27.3 mV decade -1 for PME and 8.0 × 10 -8 -5.0 × 10 -2 M with a slope of 29.1 mV decade -1 for CGE) and very low limits of detection (8.0 × 10 -6 M for PME and 5.0 × 10 -8 M for CGE). The potentiometric response is independent of the pH of the test solution in the pH range 3.0 -6.0. The proposed electrodes possess very good selectivities over a wide variety of other cations, including alkali, alkaline earth, transition and heavy metal ions, the selectivity coefficients for the CGE being much improved over those for the PME. The electrodes were used as indicator electrodes in the potentiometric titration of Cu 2+ and in the recovery of copper ions from wastewater.

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“…17 The activities of the metal ions were based on the activity coefficient (γ) data calculated from the modified form of the Debye-Hückel equation 18,19 and the ionic strength were kept constant by using 0.1 M NaCl.…”

Section: Membrane Preparationmentioning

confidence: 99%

Lead(II)-Selective Electrode Based on Phenyl Disulfide

Abbaspour

Khajeh

2002

ANAL. SCI.

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Potentiometric ion sensors based on polymeric membranes are well established and used in many laboratories; and sensors for about 60 analytes are currently known. 1 The increased industrial use of lead, and its serious effect on human health 2 have caused the electrochemical properties and preparation of the lead ion selective membrane electrodes to be extensively studied.During 1986 -1992, compounds such as dibenzo-18-crown-6 and diazadibenzo-18-crown-6 3 dibenzo-18-crown-6 and 3,17-diazadibenzo-18-crown-6 4 and monobenzo-15-crown-5 (MB15C5), MB15C5-tungstophosphoric acid and MB15C5-molybdophosphoric acid 5 were used as ionophores in lead ISEs. Later, lead in environmental samples was determined by an ISE by Li and Liu 6 . The pH of the medium was 4 and the Nernstian range was 1 × 10 -6 -1 × 10 -2 M with slope of 26.4 mV per decade.In 1999 Abbaspour and Tavakol 7 prepared a PVC leadselective electrode by using benzyl disulfide as an ionophore and dimethylsebacate (DMS) as a plasticizer. The linear range was 2 × 10 -5 -5 × 10 -2 M for Pb 2+ with a Nernstian slope of 29.2 ± 1.3 mV per decade.Also in 1999, lead selective membrane electrodes based on selected thiacrown ethers were prepared by Radacka et al. 8 In 2000, a PVC membrane electrode for Pb 2+ based on tetraphenylporphyrin was prepared by Shamsipur et al. 9 The linear range was 1.0 × 10 -5 -1.0 × 10 -2 M and the Nernstian slope was 30.0 mV/decade. In 2001, caprice acid was used for a PVC based lead selective electrode by Mousavi et al. 10 The electrode had a Nernstian slope of 29.0 ± 0.5 mV/decade for lead ions over a linear range of 1.0 × 10 -5 -1.0 × 10 -2 . The present lead-selective electrode is a PVC-based membrane using phenyl disulfide as ionophore and onitrophenyl octyl ether (NPOE) as a plasticizer. The proposed electrode shows a wide linear range and is applicable over a wide pH range. In this electrode, no additive such as sodium tetraphenylborate or potassium tetrakis (p-chlorophenyl) Experimental ReagentsReagent grade o-nitrophenyloctylether (NPOE) was obtained from Fluka; tetrahydrofuran (THF), dimethylsebacate (DMS), polyvinylcholoride (PVC), dibutylphetalate (DBP), benzyl acetate (BA) acetophenone (AP), and potassium tetrakis (pchlorophenyl) borate (KTpClPB) were all obtained from Merck Chemical Company. Phenyl disulfide was synthesized and used after purification according to the suggestion of described Firouzabadi et al. elsewhere. 11 Nitrate salts of all cations used (all from Merck) were of the highest purity available and were used without any further purification. All solutions were prepared from analytical reagents grade using triply distilled water and their measurements were performed in unbuffered solutions. Membrane preparationThe PVC membrane electrode was fabricated as in our previous works. 7,12,13 The membrane composition was 32.6 mg of PVC powder and 2.6 mg of phenyl disulfide as ionophore, with 64.8 mg of NPOE as solvent mediator. [14][15][16] Electrode system and EMF measurements All electromotive force (emf) meas...

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Copper(II)-selective electrodes based on macrocyclic polythiaethers

Cited by 84 publications

References 0 publications

Novel PVC-Based Copper(II) Membrane Sensor Based on 2-(1′-(4′-(1″-Hydroxy-2″-naphthyl)methyleneamino)butyl iminomethyl)-1-naphthol

Novel PVC-Based Copper(II) Membrane Sensor Based on 2-(1′-(4′-(1″-Hydroxy-2″-naphthyl)methyleneamino)butyl iminomethyl)-1-naphthol

A 9,10-Anthraquinone Derivative Having Two Propenyl Arms as a Neutral Ionophore for Highly Selective and Sensitive Membrane Sensors for Copper(II) Ion

Lead(II)-Selective Electrode Based on Phenyl Disulfide

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