Cobalt(II)-selective electrode based on a newly synthesized macrocyclic compound

Singh, Ashok Kumar; Singh, Rupam; Saxena, Puja

doi:10.1016/j.snb.2005.06.011

Cited by 55 publications

(20 citation statements)

References 18 publications

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“…In addition, the nature of plasticizer is well-known to influence largely the measuring concentration range of the solvent polymeric sensors as well as their selectivity coefficients [12][13][14][15][16][17][18][19][20][21][22][23][29][30][31][32][33][34][35][36][37][38]52].…”

Section: Effect Of Membrane Compositionmentioning

confidence: 99%

“…Thus, due to the urgent need for specific monitoring of Co 2+ ion in many industrial, environmental medicinal and food samples, there have been a number of recent reports on potentiometric cobalt ion-selective electrodes in the literature [29][30][31][32][33][34][35][36][37][38]. However, most of these electrodes possess either one, two or, in some cases, all of the following drawbacks: (1) narrow working concentration range, (2) high limit of detection and (3) significant interferences from many cations.…”

Section: Introductionmentioning

confidence: 99%

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An efficient and selective flourescent optode membrane based on 7-[(5-chloro-8-hydroxy-7-quinolinyl)methyl]-5,6,7,8,9,10-hexahydro-2H-1,13,4,7,10-benzodioxatriazacyclopentadecine-3,11(4H,12H)-dione as a novel fluoroionophore for determination of cobalt(II) ions

Shamsipur

Sadeghi

Alizadeh

et al. 2008

Analytica Chimica Acta

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Section: Effect Of Membrane Compositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An efficient and selective flourescent optode membrane based on 7-[(5-chloro-8-hydroxy-7-quinolinyl)methyl]-5,6,7,8,9,10-hexahydro-2H-1,13,4,7,10-benzodioxatriazacyclopentadecine-3,11(4H,12H)-dione as a novel fluoroionophore for determination of cobalt(II) ions

Shamsipur

Sadeghi

Alizadeh

et al. 2008

Analytica Chimica Acta

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“…The measurement of the electromotoric force of the system with cobalt electrode, reference electrode Orion 90-02 was carried out at room temperature in a solution stirred with a mechanic stirrer by means of potentiometric system consisting of a custom made 16 …”

Section: Apparatusmentioning

confidence: 99%

“…So far only limited number of cobalt-selective sensors has been described in the literature on the topic [9][10][11][12][13][14][15][16][17]. Moreover, most of these electrodes suffer a lack of stability, a limited concentration range with theoretical response, and exhibit low lifetime and high response time.…”

Section: Introductionmentioning

confidence: 99%

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Cobalt(II) ion-selective electrode with solid contact

Wardak

2008

Open Chemistry

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Abstract:A new all plastic sensor for Co 2+ ions based on 2-amino-5 (hydroxynaphtyloazo-1')-1,3,4 thiadiazole (ATIDAN) as ionophore was prepared. The electrode exhibits a low detection limit of 1.5 x 10 -6 mol L -1 and almost theoretical Nernstian slope in the activity range 4.0 x 10of cobalt ions. The response time of the sensor is less than 10 s and it can be used over a period of 6 months without any measurable divergence in potential. The proposed sensor shows a fairly good selectivity for Co(II) over other metal ions. The electrode was successfully applied for determination of Co 2+ in real samples and as an indicator electrode in potentiometric titration of Co 2+ ions with EDTA.© Versita Warsaw and Springer-Verlag Berlin Heidelberg.

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Self‐assembly of p‐Aminothiophenol on Gold Surface: Application for Impedimetric and Potentiometric Sensing of Cobalt (II) Ions – A Comparative Study

Kaur

2019

Electroanalysis

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Cobalt, despite an essential biological element, imposes threat to humans when exposed to high concentration or even to low concentration for long term which demands the development of highly sensitive and selective analytical methods for its trace analysis. In the present work, self‐assembly of p‐aminothiophenol (p‐ATP) on gold surface (Au−ATP SAM) was carried out and for the first time, applied as a platform for impedimetric and potentiometric sensing of Co2+. Au−ATP SAM was characterized using electrochemical techniques: cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), in the presence of two redox probes: [Fe(CN)6]3−/4− and [Ru(NH3)6]2+/3+ to evaluate associated passivating behaviour. Au−ATP SAM completely blocked [Fe(CN)6]3−/4− as compared to [Ru(NH3)6]2+/3+ which may be attributed to inner‐sphere and outer‐sphere ET mechanisms, respectively. Au−ATP SAM was found to exhibit excellent sensitivity towards Co2+ in a wider concentration range from 1.0×10−12 M to 1.0×10−5 M (r2=0.963) at pH 5.5 with a detection limit of 6.0×10−13 M and superior selectivity. Further, carbon paste electrode (CPE) was prepared by incorporating p‐ATP bound gold nanoparticles and explored for potentiometric sensing of Co2+ which exhibited Nernstian slope of 29.2±0.2 mV/dec in linear concentration range of 1.0×10−6 M–1.0×10−1 M (r2=0.971) with a detection limit of 8.0×10−7 M. The proposed sensors were successfully applied for estimation of Co2+ content in water samples.

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Cobalt(II)-selective electrode based on a newly synthesized macrocyclic compound

Cited by 55 publications

References 18 publications

An efficient and selective flourescent optode membrane based on 7-[(5-chloro-8-hydroxy-7-quinolinyl)methyl]-5,6,7,8,9,10-hexahydro-2H-1,13,4,7,10-benzodioxatriazacyclopentadecine-3,11(4H,12H)-dione as a novel fluoroionophore for determination of cobalt(II) ions

An efficient and selective flourescent optode membrane based on 7-[(5-chloro-8-hydroxy-7-quinolinyl)methyl]-5,6,7,8,9,10-hexahydro-2H-1,13,4,7,10-benzodioxatriazacyclopentadecine-3,11(4H,12H)-dione as a novel fluoroionophore for determination of cobalt(II) ions

Cobalt(II) ion-selective electrode with solid contact

Self‐assembly of p‐Aminothiophenol on Gold Surface: Application for Impedimetric and Potentiometric Sensing of Cobalt (II) Ions – A Comparative Study

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