A New Europium(III) PVC Membrane Potentiometric Sensor Based on 4-(2-Hydroxybenzylideneamino)-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2<i>H</i>)-one

Zamani, Hassan Ali; Rajabzadeh, Ghadier; Ganjali, Mohammad Reza

doi:10.1246/bcsj.80.172

Cited by 53 publications

(13 citation statements)

References 56 publications

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“…A Pyrex tube (3-5 mm o.d. on top) was dipped into the mixture for about 5 s, in order to achieve a transparent membrane formation of about 0.3 mm in thickness (Ganjali et al 2005a;Ganjali et al 2005b;Zamani et al 2005a;Zamani et al 2005b;Zamani et al 2006a;Ganjali et al 2006a;Ganjali et al 2006b;Ganjali et al 2006c;Zamani et al 2006 h;Zamani et al 2007b). In the end, the tube was removed from the solution, kept at room temperature for 12 h and filled with an internal solution (1.0 Â 10 23 M Fe(NO 3 ) 3 ).…”

Section: Electrode Preparationmentioning

confidence: 99%

Fe(III) Ion‐Selective Membrane Electrode Based on 4‐Amino‐6‐methyl‐3‐methylmercapto‐1,2,4‐triazin‐5‐one

Pooyamanesh¹,

Zamani²,

Rajabzadeh³

et al. 2007

Analytical Letters

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An original highly selective and sensitive PVC membrane sensor, working as a Fe(III) ion selective electrode and using 4-amino-6-methyl-3-methylmercapto-1,2,4-triazin-5-one (AMMTO) as an ionophore, has been developed. This cetain sensor demonstrated the following performance; a linear dynamic range between 1.0 Â 10 26 and 1.0 Â 10 21 M with a near Nernstian slope of 19.4 + 0.5 mV per decade; a detection limit of 6.8 Â 10 27 M; characteristically, the best performance was obtained with a membrane composition of 30% poly(vinyl chloride), 65.5% nitrophenyl octyl ether, 2% sodium tetraphenyl borate and 2.5% AMMTO. Furthermore, the potentiometric response of the developed electrode is independent of the solution pH in the range of 2.2 -4.8. The sensor possesses the advantages of short conditioning time, fast response time (,15 s) and, especially, great selectivity towards transition and heavy metal ions and some mono, di-and trivalent cations. The electrode can be used for at least 9 weeks without any considerable potential divergence. It was effectively used as an indicator electrode in the potentiometric

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Section: Electrode Preparationmentioning

confidence: 99%

Fe(III) Ion‐Selective Membrane Electrode Based on 4‐Amino‐6‐methyl‐3‐methylmercapto‐1,2,4‐triazin‐5‐one

Pooyamanesh¹,

Zamani²,

Rajabzadeh³

et al. 2007

Analytical Letters

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“…[51][52][53][54][55][56][57][58] Thus, the influences of membrane compositions sensor were studied, on the potential responses of the Ag + and the results are given in Table 1. In accordance with Table 1, using 4% of DLCE in the membrane electrode displays Nernstian slope towards silver ion (membrane No.…”

Section: Effect Of Membrane Composition On the Potential Response Of mentioning

confidence: 99%

A Silver(i) PVC-Membrane Sensor Based on Synthesized Dilaktam Crown Ether

Masrournia

Zamani

Mohamadzadeh

et al. 2009

J. Chil. Chem. Soc.

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In this work, we introduce a highly selective and sensitive silver(I) PVC-membrane sensor. Dilaktam Crown ether (DLCE) was used as a membrane-active component to prepare a highly sensitive Ag(I)-selective polymeric membrane electrode. This sensor illustrated very good selectivity and sensitivity towards silver ions over a wide variety of cations, including alkali, alkaline earth, transition and heavy metal ions. The sensor exhibited a Nernstian behavior (with a slope of 59.8 ± 0.2 mV per decade) for a concentration range (1.0 × 10 -5__ 1.0 × 10 -1 M) with a detection limit of 6.8×10 -6 M. It displayed a response time in the whole concentration range (~20 s) and its usage exceeded a 75 days period in the pH range of 5.1-7.2. The proposed electrode application was found to be successful as an indicator electrode in the titration with NaCl.

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“…The nature of the plasticizer influences both the dielectric constant of the membrane and the mobility of the ionophore and its complex [35][36][37]. In addition to plasticizer, the presence of lipophilic negatively charged additives improves the potentiometric behavior of certain selective electrodes.…”

Section: Membrane Composition Influencementioning

confidence: 99%

Fabrication of an iron(III)-selective PVC membrane sensor based on a bis-bidentate Schiff base ionophore

Zamani

Salavati‐Niasari

2008

Transition Met Chem

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A Fe 3? ion-selective membrane sensor was fabricated from polyvinyl chloride (PVC) matrix membrane containing bis-bidentate Schiff base (BBS) as a neutral carrier, sodium tetraphenyl borate (NaTPB) as anionic excluder, and o-nitrophenyloctyl ether (NPOE) as a plasticizing solvent mediator. The effects of the membrane composition, pH, and additive anionic influence on the response properties were investigated. The best performance was obtained with a membrane containing 32% PVC, 62.5% NPOE, 3% BBS, and 2.5% NaTPB. The electrode shows a Nernstian behavior (slope of 19.3 ± 0.6) over a very wide iron ion concentration range (1.0 9 10 -7 -1.0 9 10 -2 M) and has a low detection limit (7.4 9 10 -8 M). The potentiometric response of the sensor is independent of pH of the solution in the pH range 1.9-5.1. The proposed sensor has a very low response time (\15 s) and a good selectivity relative to a wide variety of other metal ions including common alkali, alkaline earth, heavy, and transition metal ions. The electrode can be used for at least 60 days without any considerable divergence in potentials. The proposed sensor was successfully applied as an indicator electrode for the potentiometric titration of 1.0 9 10 -2 M Fe 3? ions with a 1.0 9 10 -4 M EDTA and the direct determination of Fe 3? in mineral water and wastewater samples.

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A New Europium(III) PVC Membrane Potentiometric Sensor Based on 4-(2-Hydroxybenzylideneamino)-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one

Cited by 53 publications

References 56 publications

Fe(III) Ion‐Selective Membrane Electrode Based on 4‐Amino‐6‐methyl‐3‐methylmercapto‐1,2,4‐triazin‐5‐one

Fe(III) Ion‐Selective Membrane Electrode Based on 4‐Amino‐6‐methyl‐3‐methylmercapto‐1,2,4‐triazin‐5‐one

A Silver(i) PVC-Membrane Sensor Based on Synthesized Dilaktam Crown Ether

Fabrication of an iron(III)-selective PVC membrane sensor based on a bis-bidentate Schiff base ionophore

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