Mercury(II) Ion-Selective Electrode Based on Dibenzo-diazathia-18-crown-6-dione

Javanbakht, Mehran; Ganjali, M. R.; Eshghi, Hossein; Sharghi, Hashem; Shamsipour, M

doi:10.1002/(sici)1521-4109(199902)11:2<81::aid-elan81>3.3.co;2-h

Cited by 99 publications

(14 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was observed that the membranes incorporating the ingredients with composition:ionophore (L 1 or L 2 ):NaTBP:plasticizer:PVC as (w/w; mg) of 5:5:300:150, exhibited the linear potential response for neodymium (III). This indicates that synergism between lipophilicity and polarity, exist at the composition used and the best result of detection limit was obtained when these properties reach an intermediate value [32][33][34].…”

Section: Membrane Compositionmentioning

confidence: 86%

Comparative studies of neodymium (III)-selective PVC membrane sensors

Gupta

Goyal

Sharma

2009

Analytica Chimica Acta

186

View full text Add to dashboard Cite

a b s t r a c tSensors based on two neutral ionophores, N,N -bis((1H-pyrrol-2-yl)methylene)cyclohexane-1,2-diamine (L 1 ) and 3,3 -(cyclohexane-1,2-diylbis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene)bis(5-hydroxymethyl)pyridine-2-ol) (L 2 ) are described for quantification of neodymium (III). Effect of various plasticizers; 2-nitrophenyloctylether (o-NPOE), dibutyl butylphosphonate (DBBP), tri-n-butyl phosphates (TBP), dioctylpthalate (DOP) and chloronapthalen (CN) and anion excluder, sodiumtetraphenylborate (NaTPB) has been studied. The membrane composition of PVC:o-NPOE:ionophore (L 1 ):NaTPB (w/w; mg) of 150:300:5:5 exhibited best performance. The sensor with ionophore (L 1 ) exhibits significantly enhanced selectivity towards neodymium (III) in the concentration range 5.0 × 10 −7 to 1.0 × 10 −2 M with a detection limit of 1.0 × 10 −7 M and a Nernstian compliance (19.8 ± 0.3 mV decade −1 of activity) within pH range 4.0-8.0. The response time of sensor was found as 10 s. The influence of the membrane composition and possible interfering ions has also been investigated on the response properties of the electrode. The fast and stable response, good reproducibility and long-term stability of the sensor are observed. The sensor has been found to work satisfactorily in partially non-aqueous media up to 20% (v/v) content of methanol, ethanol or acetonitrile and could be used for a period of 3 months. The selectivity coefficients determined by using fixed interference method (FIM) indicate high selectivity for neodymium. The proposed electrode shows fairly good discrimination of neodymium (III) from other cations. The application of prepared sensor has been demonstrated in the determination of neodymium (III) in spiked water samples.

show abstract

Section: Membrane Compositionmentioning

confidence: 86%

Comparative studies of neodymium (III)-selective PVC membrane sensors

Gupta

Goyal

Sharma

2009

Analytica Chimica Acta

186

View full text Add to dashboard Cite

show abstract

“…44,51 To assess the selectivity of the proposed silver ion-selective electrode over other cations, M n+ , the methods of fixed interference (FIM) 52 and mixed solution (MSM) 53 were employed as described in our previous publications. 12,13,[28][29][30][31]40 The resulting K Ag,M values for the proposed Ag + ion-selective electrode are summarized in Table 1. As seen, in all cases studied, the selectivity coefficients are in the order of 10 −3 and smaller, emphasizing the highly selective behavior of the proposed membrane electrode for Ag + ion over many other monovalent and divalent cations of vastly different soft-hard character.…”

Section: Resultsmentioning

confidence: 99%

“…26,27 Recently, we have used some new macrocyclic diamide derivatives, synthesized in our laboratories, as suitable neutral ionophores in the construction of PVC-membrane electrodes for Sr 2+ , 28 Zn 2+ , 29 Cu 2+ 30 and Hg 2+ ions. 31 In the present paper, we report the first synthesis of 3,5-diaza-4,5;13,14-dibenzo-21-hydroxy-19-methoxy-9-thia-6,12-dioxabicyclo[15.3.1]heneicosa-1(21),17,19-triene-2,16-dione (I) and its successful use as an excellent neutral ionophore for the preparation of a highly selective and stable plasticized PVC-membrane electrodes for the potentiometric determination of Ag + ion over a wide concentration range.…”

Section: Introductionmentioning

confidence: 99%

A New PVC-Membrane Electrode Based on a Thia-Substituted Macrocyclic Diamide for Selective Potentiometric Determination of Silver Ion

Shamsipur¹,

Kazemi²,

Niknam³

et al. 2002

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

A new PVC-membrane electrode for Ag + ion based on a thia-substituted macrocyclic diamide has been prepared. The electrode exhibited a Nernstian response for Ag + over a wide concentration range (1.7 × 10It has a response time <15 s and can be used for at least 3 months without divergence. The proposed membrane sensor revealed good selectivities for Ag + over a variety of metal ions and can be used in a pH range 3.0-7.5. It has been used successfully for direct determination of Ag + in different real samples and, as an indicator electrode, in the titration of silver ion.

show abstract

“…The ionophore, membrane composition, nature of plasticizer and additive used affect the potential response of PVC membrane [15,[22][23][24] which is the function of praseodymium ion free concentration. The measured potentials were plotted against active concentration of Pr(III) and shown in Figs.…”

Section: Potential Response Of Membranementioning

confidence: 99%

Comparative studies of praseodymium(III) selective sensors based on newly synthesized Schiff's bases

Gupta

Goyal

Pal

et al. 2009

Analytica Chimica Acta

View full text Add to dashboard Cite

a b s t r a c tPraseodymium ion selective polyvinyl chloride (PVC) membrane sensors, based on two new Schiff's bases 1,3-diphenylpropane-1,3-diylidenebis(azan-1-ylidene)diphenol (M 1 ) and N,Nbis(pyridoxylideneiminato) ethylene (M 2 ) have been developed and studied. The sensor having membrane composition of PVC: o-NPOE: ionophore (M 1 ): NaTPB (w/w; mg) of 150: 300: 8: 5 showed best performances in comparison to M 2 based membranes. The sensor based on (M 1 ) exhibits the working concentration range 1.0 × 10 −8 to 1.0 × 10 −2 M with a detection limit of 5.0 × 10 −9 M and a Nernstian slope 20.0 ± 0.3 mV decade −1 of activity. It exhibited a quick response time as <8 s and its potential responses were pH independent across the range of 3.5-8.5.The influence of the membrane composition and possible interfering ions have also been investigated on the response properties of the electrode. The sensor has been found to work satisfactorily in partially non-aqueous media up to 15% (v/v) content of methanol, ethanol or acetonitrile and could be used for a period of 3 months. The selectivity coefficients determined by using fixed interference method (FIM) indicate high selectivity for praseodymium(III) ions over wide variety of other cations. To asses its analytical applicability the prepared sensor was successfully applied for determination of praseodymium(III) in spiked water samples.

show abstract

Mercury(II) Ion-Selective Electrode Based on Dibenzo-diazathia-18-crown-6-dione

Cited by 99 publications

References 10 publications

Comparative studies of neodymium (III)-selective PVC membrane sensors

Comparative studies of neodymium (III)-selective PVC membrane sensors

A New PVC-Membrane Electrode Based on a Thia-Substituted Macrocyclic Diamide for Selective Potentiometric Determination of Silver Ion

Comparative studies of praseodymium(III) selective sensors based on newly synthesized Schiff's bases

Contact Info

Product

Resources

About