Influence of different plasticizers on the response of chemical sensors based on polymeric membranes for nitrate ion determination

Pérez, María de los Ángeles Arada; Marı́n, Leonel Pérez; Quintana, Josefina Calvo; Yazdani‐Pedram, Mehrdad

doi:10.1016/s0925-4005(02)00475-6

Cited by 135 publications

(19 citation statements)

References 15 publications

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“…As can be seen from Table 2, the values for the slope (S) correspond to those predicted by Nernst for monovalent anions. The most sensible value of S corresponds to sensor constructed by using DEP as plasticizer, which is much higher than those already found for this ISE by using other plasticizers such as dibutylphthalate (DBP) and dioctylphthalate (DOP) [20]. The values obtained for the slope has the following order: DEP (-73.15 mV/decade) > DOP(-61.2 mV/decade) > DBP (-59.6 mV/decade).…”

Section: Resultsmentioning

confidence: 64%

“…The epoxy conducting resin was prepared by mixing a commercial two component epoxy adhesive form Ciba-Geigy with graphite powder from Merck as already described by Arada Pérez et.al. [20] for nitrate sensors obtaining a resistance of ≤ 2 kΩ.…”

Section: Methodsmentioning

confidence: 99%

“…The preparation of the electrode was carried out in a similar manner as the method used for the construction of the all-solid-state ion selective electrodes reported in the literature [20].…”

Section: Preparation Of the Membranementioning

confidence: 99%

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Chemical Sensor Based on Tetradecil Ammonium Nitrate

Pérez

Yazdani‐Pedram

2013

J. Chil. Chem. Soc.

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The construction and evaluation of an all-solid-state type electrode selective to nitrate based on poly(vinyl chloride) (PVC) as polymeric membrane, diethyl phthalate as plasticizer and tetradecilammonium nitrate (TDAN) as positively charged ionophore is reported. The constructed electrode showed fast potentiometric response to nitrate in the concentration range from 10 -6 to 10 -2 mol/dm 3 with Nernstian slope of -73.15 ± 0.28 mV/decade, response time of 15 seconds and lifetime of 1 month.

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Section: Resultsmentioning

confidence: 64%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Chemical Sensor Based on Tetradecil Ammonium Nitrate

Pérez

Yazdani‐Pedram

2013

J. Chil. Chem. Soc.

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“…For plasticizer to be adequate for use in sensors, it should gather certain properties and characteristics, such as having high lipophilicity, high molecular weight, low vapor pressure, and high capacity to dissolve the substrate and other additives present in the matrix [31]. The influence of the plasticizer type and its quantity on the characteristics of the studied sensors was investigated using five plasticizers with different polarities including DBP, DOP, DOS, TCP and o-NPOE.…”

Section: Effect Of Plasticizer Typementioning

confidence: 99%

Chemically Modified Carbon Paste Electrode for Determination of Cesium Ion by Potentiometric Method

Aglan¹,

Mohamed²

2012

AJAC

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A new chemically modified carbon paste electrode for cesium(I) ion determination based on potassium zinc hexacyanoferrate (PZHCF) as an ionophore was prepared. The electrode exhibits a Nernstian response for Cs(I) ions over a wide concentration range from 1 × 10 -6 to 1 × 10 -1 mol·L -1 with a slope of 58 ± 0.5 mV·decade -1. It has a response time of about 35 s and can be used for a period of 3 months with good reproducibility. Detection limit obtained in the optimal conditions was 3 × 10 -7 mol·L -1. The potentiometric response is independent of the pH of the solution in the pH range 4.0 -8.0. The electrode possesses the advantages of low resistance, fast response over a variety of other cations. The proposed electrode is applied as a sensor for the determination of Cs(I) ion concentration in different samples solutions. The results showed a good correlation with the data obtained by atomic absorption spectrometric method.

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“…Nitrate is well known for being a weak coordinator requiring a complexation site of a specific size, shape and charge. Many approaches have been tried to prepare nitrate ionophores [4][5][6]. Most ionophores for nitrate are employed in conventional membrane ion selective electrodes.…”

Section: Introductionmentioning

confidence: 99%

Nitrate Ion Selective Electrode Based on Ion Imprinted Poly(N-methylpyrrole)

2017

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Abstract:A poly(N-methylpyrrole) based ion selective electrode (ISE) has been prepared by electro-polymerization of N-methylpyrrole using potassium nitrate as the supporting electrolyte. Electrochemical and chemical variables were used to optimize the potentiometric response of the electrodes and to maximize the selectivity for nitrate over potential interferences. The selectivity, longevity and stability of the ion-imprinted polymer give this electrode advantages over traditional nitrate ISEs. The best prototype electrode exhibits a linear potential response to nitrate ion within the concentration range of 5.0 × 10 −6 to 0.1 M nitrate with a near Nernstian slope of −56.3 mV per decade (R 2 = 0.9998) and a strong preference for the nitrate ion over other anions. The selectivity coefficients of the electrode were evaluated by the fixed interference method. The use of N-methylpyrrole has advantages over pyrrole in terms of selectivity and pH insensitivity.

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Influence of different plasticizers on the response of chemical sensors based on polymeric membranes for nitrate ion determination

Cited by 135 publications

References 15 publications

Chemical Sensor Based on Tetradecil Ammonium Nitrate

Chemical Sensor Based on Tetradecil Ammonium Nitrate

Chemically Modified Carbon Paste Electrode for Determination of Cesium Ion by Potentiometric Method

Nitrate Ion Selective Electrode Based on Ion Imprinted Poly(N-methylpyrrole)

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