Neutral carriers based polymeric membrane electrodes for selective determination of mercury (II)

Gupta, Vinod K.; Singh, Ashok Kumar; Khayat, M. Al; Gupta, Bharat

doi:10.1016/j.aca.2007.03.014

Cited by 387 publications

(113 citation statements)

References 46 publications

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“…With the rapid development of electrochemistry [4][5][6][7][8][9], various kinds of new materials including ARS have been used more frequently than before [10][11][12][13][14][15][16]. As an electroactive species, ARS has been employed for the electrochemical detection of some organic molecules [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Development of a poly(alizarin red S)/ionic liquid film modified electrode for voltammetric determination of catechol

Zhang¹,

Pan²,

Zhang³

et al. 2014

Electrochimica Acta

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a b s t r a c tA novel modified electrode for voltammetric catechol determination was fabricated by electroploymerization of alizarin red S (ARS) onto a glassy carbon electrode (GCE) in one kind of room-temperature ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate, BMIMBF 4 ). The polymeric ARS/ionic liquid (PARS/BMIMBF 4 ) film modified electrode was characterized by using scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and electrochemical methods. The EDX, XPS and FTIR results indicated that PARS/BMIMBF 4 film was successfully obtained. Compared with the GCE modified by electroploymerization of ARS in aqueous solution, the GCE modified by electroploymerization of ARS in BMIMBF 4 showed smoother and more compact morphology for coating and better electroanalytical properties. Given the combined electrochemical activity of PARS and excellent conductivity of BMIMBF 4 , the PARS/BMIMBF 4 /GCE has been successfully used for catechol determination by differential pulse voltammetry (DPV) with a linear range of 0.10 to 500 M. The sensitivity and detection limit are 42 nA/M and 0.026 M, respectively. The PARS/BMIMBF 4 modified electrode was successfully applied to the determination of catechol in real water samples and may serve as a simple but high-performance sensor for the determination of some environmental pollutants.

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Section: Introductionmentioning

confidence: 99%

Development of a poly(alizarin red S)/ionic liquid film modified electrode for voltammetric determination of catechol

Zhang¹,

Pan²,

Zhang³

et al. 2014

Electrochimica Acta

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“…Moreover, these works all involved a very complex synthesis of fluorescent materials. As far as we know, some other analytical methods have been developed for the determination of mercury, such as electrochemical method [20][21][22][23][24][25][26], atomic absorption spectrometry [27][28][29][30] or cold-vapour inductively coupled plasma atomic emission [31], chromatographic determination [32][33][34], inductively coupled plasma-mass spectrometric analysis [35,36] or electrospray ionization mass spectrometry [37], room temperature phosphorimetry [38]. Although these methods are accurate, most require a tedious sample pre-treatment, sophisticated performance and/or expensive equipment.…”

Section: Introductionmentioning

confidence: 99%

An optical sensor for mercury ion based on the fluorescence quenching of tetra(p-dimethylaminophenyl)porphyrin

Yang

Jiang

Shen

et al. 2009

Analytica Chimica Acta

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a b s t r a c tAn optical sensor for mercury ion (Hg 2+ ), based on quenching the fluorescence of the sensing reagent porphyrin immobilized in plasticized poly(vinyl chloride) (PVC) membrane, has been developed. The responses to mercury ion were compared for the sensors modified with three porphyrin compounds including 5,10,15,20-tetraphenylporphyrin (TPP), tetra(p-dimethylaminophenyl)porphyrin (TDMAPP) and tetra(N-phenylpyrazole) porphyrin (TPPP). Among them, TDMAPP showed the most remarkable response to Hg 2+ . The drastic decrease of the TDMAPP fluorescence intensity was attributed to the formation of a complex between TDMAPP and Hg 2+ , which has been utilized as the fabrication basis of a Hg 2+ -sensitive fluorescence sensor. The analytical performance characteristics of the TDMAPP modified sensor was investigated. The response mechanism, especially involving the response difference of three porphyrin compounds, was discussed in detail. The sensor can be applied to the quantification of Hg 2+ with a linear range covering from 4.0 × 10 −8 mol L −1 to 4.0 × 10 −6 mol L −1 . The limit of detection was 8.0 × 10 −9 mol L −1 . The sensor exhibited excellent reproducibility, reversibility and selectivity. Also, the TDMAPP-based sensor was successfully used for the determination of Hg 2+ in environmental water samples.

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“…Depending on the ligand structure and cation size, complex (or ion-pair) formation or extractability is the determining factor for selectivity. 27 In this work, the selectivity coefficients of the sensor toward different species were evaluated by using separate solution method (SSM) with a fixed concentration of interference compounds at 1.0 × 10 -3 mol L -1 at pH 7.0. The selectivity coefficient values of the electrodes reflect a high selectivity of these electrodes towards amiloride.…”

Section: Potentiometric Selectivitymentioning

confidence: 99%

A DNA-based coated wire membrane sensor for selective determination of amiloride in pharmaceutical compounds, plasma and urine

Allafchian¹,

Ensafi²

2010

J. Braz. Chem. Soc.

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A construção e características do desempenho de um eletrodo de membrana polimérica baseadas na formação de par iônico para quantificação de amilorida em ds-DNA-amilorida de esperma de salmão são descritas. O filme de ds-DNA-amilorida em esperma de salmão pode ser facilmente preparado como uma camada de cobertura em um eletrodo de fio de platina. Este eletrodo apresenta uma boa resposta potenciométrica para amilorida. As características do desempenho são influenciadas pela composição da membrana e a resposta potenciométrica do eletrodo pode melhorar substancialmente. A melhor performance foi obtida com o eletrodo apresentando uma composição da membrana (m/m) de 6,4% de ds-DNA-amilorida como par iônico, 62,9% de cloreto de polivinila como matriz e 30,7% de nitrofenil octileter (NPOE) como um íon exclusor. O eletrodo proposto exibe resposta Nernstiniana no intervalo de concentração de 1,6 × 10 -6 a 1,0 × 10 -2 mol L -1 de amilorida com um limite de detecção de 1,5 × 10 -6 mol L -1 de amilorida e um rápido tempo de resposta, de 5 s. Coeficientes de seletividade para amilorida relativa aos números de substâncias interferentes foram investigados. O sensor foi altamente seletivo para amilorida, em um grande número de compostos. O uso analítico do eletrodo proposto foi avaliado pela aplicação na determinação de amilorida em amostras reais.Herein, the construction and performance characteristic of a polymeric membrane electrode based on ion-pair formation of salmon sperm ds-DNA-amiloride for quantification of amiloride is described. Salmon sperm ds-DNA-amiloride layer can be prepared easily as a coating layer on a Pt-wire electrode. This electrode has a good potentiometric response to amiloride. The influences of the membrane compositions on the potentiometric response of the electrode have been found to substantially improve the performance characteristics. The best performance was obtained with the electrode having a membrane composition (m/m) of ds-DNA-amiloride as an ion pair (6.4%), polyvinyl chloride (PVC) matrix (62.9%), and 2-nitrophenyl octylether (NPOE) as an ion excluder (30.7%). The proposed electrode exhibits Nernstian response in the concentration range of 1.6 × 10 -6 to 1.0 × 10 -2 mol L -1 amiloride with a detection limit of 1.5 × 10 -6 mol L -1 amiloride, performs satisfactorily with a fast response time of 5 s. Selectivity coefficients for amiloride relative to a numbers of potential interfering substances were investigated. The sensor was highly selective for amiloride over a large number of compounds. The analytical usefulness of the proposed electrode has been evaluated by its application in the determination of amiloride in real samples.

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Neutral carriers based polymeric membrane electrodes for selective determination of mercury (II)

Cited by 387 publications

References 46 publications

Development of a poly(alizarin red S)/ionic liquid film modified electrode for voltammetric determination of catechol

Development of a poly(alizarin red S)/ionic liquid film modified electrode for voltammetric determination of catechol

An optical sensor for mercury ion based on the fluorescence quenching of tetra(p-dimethylaminophenyl)porphyrin

A DNA-based coated wire membrane sensor for selective determination of amiloride in pharmaceutical compounds, plasma and urine

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