Ferric Ion Selective Electrode Based on Graphite Carbon Electrode

Chen, Zuliang; Yang, Xinglun

doi:10.1002/(sici)1521-4109(199807)10:8<567::aid-elan567>3.0.co;2-o

Cited by 12 publications

(2 citation statements)

References 17 publications

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“…Furthermore, the detection limit for this FRET system is comparable with some other methods. For example, for the electrochemical method, the detection limit for ferric ions is 1 × 10 −6 M [45]; for the fluorescence method, the detection limit for ferric ions is 1 × 10 −6 M [46]; while for the commercial colorimetric method, the detection limit for ferric ions is 2 × 10 −8 M. However, the sensing strategy based on a micelle is not easy to construct as a reversible sensing system; this would limit the industrial applications of the sensor, and this point still needs to be improved.…”

Section: Discussionmentioning

confidence: 99%

Nanosized diblock copolymer micelles as a scaffold for constructing a ratiometric fluorescent sensor for metal ion detection in aqueous media

Zeng

et al. 2010

Nanotechnology

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A facile strategy was employed to create a fluorescence resonance energy transfer (FRET) based ratiometric sensing system for ferric ions in all-aqueous media by using nanosized poly(ethylene oxide)-b-polystyrene micelles as the scaffold. A hydrophobic fluorescent dye nitrobenzoxadiazolyl derivative (NBD), which served as the energy transfer donor, was incorporated into the micelle core during the micelle formation; a spirolactam rhodamine derivative (SRhB-OH) was chosen as a sensitive and selective sensor for Fe(III) ions and was then 'adsorbed' into the micelle core/corona interface. A highly efficient ring-opening reaction of SRhB-OH induced by Fe(III) generates the long-wavelength rhodamine B fluorophore which can act as the energy acceptor; thus, the micelle nanoparticles can serve as a FRET-based ratiometric detection system for ferric ions. The effects of PS block length on the ion sensing performance of the micelles were investigated, and it has been found that the micelles formed by the copolymer with moderate block length (PEO(113)-b-PS(115)) were preferable as the scaffold for the FRET system and exhibited a sensitive and selective sensing capacity for Fe(III) with a detection limit of 1 microM. This nanoparticle-based sensing strategy may be utilized to construct other ratiometric chemosensors by replacing the current dyes with other suitable ones.

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Section: Discussionmentioning

confidence: 99%

Nanosized diblock copolymer micelles as a scaffold for constructing a ratiometric fluorescent sensor for metal ion detection in aqueous media

Zeng

et al. 2010

Nanotechnology

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“…However, despite the urgent need for iron selective sensors for the potentiometric monitoring of Fe(III) ions, there have been only limited reports on Fe(III) ion selective electrodes in the literature (Buhlmann et al 1998;Mahmoud 2001). Some of them were prepared with ion exchangers (Hassan et al 1994;Buhlmann et al 1998) and a few of them with ionophores (Chem et al 1998;Saleh 2000). An iron selective electrode (Sil et al 2005) using PVC and 1,4,8,11-tetraazocyklotetradecane as ionophores had a slope of 60 mV and working concentration range 10 -6 to 10 -2 was used for the analysis of alloys and pharmaceutical preparations.…”

Section: Introductionmentioning

confidence: 99%

A new ion-selective electrode based on aluminium tungstate for Fe(III) determination in rock sample, pharmaceutical sample and water sample

Naushad

2008

Bull Mater Sci

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An inorganic cation exchanger, aluminum tungstate (AT), has been synthesized by adding 0⋅1 M sodium tungstate gradually into 0⋅1 M aluminium nitrate at pH 1⋅2 with continuous stirring. The ion exchange capacity for Na + ion and distribution coefficients of various metal ions was determined on the column of aluminium tungstate. The distribution studies of various metal ions showed the selectivity of Fe(III) ions by this cation exchange material. So, a Fe(III) ion-selective membrane electrode was prepared by using this cation exchange material as an electroactive material. The effect of plasticizers viz. dibutyl phthalate (DBP), dioctylphthalate (DOP), di-(butyl) butyl phosphate (DBBP) and tris-(2-ethylhexylphosphate) (TEHP), has also been studied on the performance of membrane sensor. It was observed that the membrane containing the composition AT: PVC: DBP in the ratio 2 : 20 : 15 displayed a useful analytical response with excellent reproducibility, low detection limit, wide working pH range (1-3⋅5), quick response time (15 s) and applicability over a wide concentration range of Fe(III) ions from 1 × 10 -7 M to 1 × 10 -1 M with a slope of 20 ± 1 mV per decade. The selectivity coefficients were determined by the mixed solution method and revealed that the electrode was selective for Fe(III) ions in the presence of interfering ions. The electrode was used for atleast 5 months without any considerable divergence in response characteristics. The constructed sensor was used as indicator electrode in the potentiometric titration of Fe(III) ions against EDTA and Fe(III) determination in rock sample, pharmaceutical sample and water sample. The results are found to be in good agreement with those obtained by using conventional methods.

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Recommendations for Nomenclature of Ion-Selective Electrodes

Guilbault¹

1976

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Ferric Ion Selective Electrode Based on Graphite Carbon Electrode

Cited by 12 publications

References 17 publications

Nanosized diblock copolymer micelles as a scaffold for constructing a ratiometric fluorescent sensor for metal ion detection in aqueous media

Nanosized diblock copolymer micelles as a scaffold for constructing a ratiometric fluorescent sensor for metal ion detection in aqueous media

A new ion-selective electrode based on aluminium tungstate for Fe(III) determination in rock sample, pharmaceutical sample and water sample

Recommendations for Nomenclature of Ion-Selective Electrodes

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