Determination of nitrate in water with a new construction of ion-selective electrode

Hulanicki, Adam; Lewandowski, Rafał; Maj, Magdalena

doi:10.1016/s0003-2670(01)80906-5

Cited by 36 publications

(8 citation statements)

References 3 publications

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“…Simplicity of design, lower costs, mechanical flexibility and the possibility of miniaturization and microfabrication have widened the applications for wire type electrodes, especially in the fields of medicine and biotechnology. Sometimes these electrodes [22][23][24][25][26][27][28][29] exhibit better selectivities than conventional type electrodes with an internal solution. But the standard potential of CWEs are often unstable, varying for one electrode during its lifetime, as well as differing among electrodes of the same type.…”

Section: Introductionmentioning

confidence: 99%

All Solid State Hydrogen Ion Selective Electrode Based on a Tribenzylamine Neutral Carrier in a Poly(vinyl chloride) Membrane with a Poly(aniline) Solid Contact

et al. 2001

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Section: Introductionmentioning

confidence: 99%

All Solid State Hydrogen Ion Selective Electrode Based on a Tribenzylamine Neutral Carrier in a Poly(vinyl chloride) Membrane with a Poly(aniline) Solid Contact

et al. 2001

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“…In CWEs, the electro active component is usually embedded in polymer membrane and the wire dip coated until a bead is formed. This type of sensor has been developed for calcium [12], nitrate [13], potas sium [14], chloride [15], lithium [16], and perchlorate [17], and sometimes these electrodes exhibit better selectivity than conventional type electrodes with an internal solution. But the standard potential of CWEs is often unstable, varying for one electrode during its lifetime, as well as differing among electrodes of the same type.…”

Section: Introductionmentioning

confidence: 99%

Mercury ion selective poly(aniline) solid contact electrode based on 2-mercaptobenzimidazol ionophore

Han

Park

et al. 2012

Russ J Electrochem

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A mercury(II) ion selective poly(aniline) solid contact electrode based on 2 mercaptobenzimida zol (2MBI) ionophore as a sulfur containing sensing material was successfully developed. The electrode exhibits a good linear response of 29.1 mV/decade (at 20 ± 0.2°C, r 2 = 0.997) within the concentration range of 1 × 10 -2 -1 × 10 -7 M Hg(II). The composition of this electrode was: ionophore 0.100, polyvinylchloride (PVC) 0.330, dibutylphthalate (DBP) 0.470, potassiumtetrakis(4 chlorophenyl)borate (KTpCIPB) 0.090, and oleic acid (OA) 0.010. A poly(aniline) solid contact electrode based on 2MBI with DBP and OA plasti cizers exhibited the best response characteristics of the results obtained for similarly coated wire type electrodes and solid contact electrodes based on only one DBP plasticizer. The electrode shows good selectivity for mer cury(II) ions in comparison with alkali, alkaline earth, transition and heavy metal ions. This electrode is suitable for use with aqueous solutions of pH 3.3-8.0 and the standard deviation in the measured EMF difference was ±0.5 mV in a mercury nitrate sample solution of 1.0 × 10 -2 M and ±1.1 mV in a mercury nitrate sample solution of 1.0 × 10 -3 M. The stabilization time was less than 15 min and the response time was less than 33 s. The elec trode was applied as a sensor for the determination of Hg(II) content in a sea water sample and some amalgam alloys. The results show good correlation with data obtained by atomic absorption spectrometry.

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“…[11][12][13][14] These electrodes sometimes exhibit better selectivities than conventional-type electrodes with an internal solution. [15][16][17][18][19][20][21][22] However, the standard potential of coated-wire electrodes is often unstable, varying for one electrode during its lifetime, as well as differing among electrodes of the same type. These systems cannot provide very reproducible potentials due to blocking the electrons between the PVC membrane coating and the metal.…”

Section: Introductionmentioning

confidence: 99%

The Behavior of a Poly(aniline) Solid Contact pH Selective Electrode Based on N,N,N′,N′-Tetrabenzylethanediamine Ionophore

et al. 2001

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A glass electrode is the most popular electrode in the determination of acidity owing to its high selectivity, reliability and dynamic pH range. However, the disadvantages of glass electrodes, such as high ohmic resistance, the need for an internal solution and the fragility of glass, suggest that other materials might be more suitable. Thus, non-glass hydrogen ion-selective electrodes have been studied by many researchers. Among them, especially, hydrogen ion-selective solvent polymeric membrane electrodes have been studied more than others. The first solvent polymeric membrane pH electrodes containing an ionophore, instead of glass, have been proposed by Ammann et al. and Schulthess et al. 1,2 This electrode has a PVC layer with tridodecylamine used as an ion carrier and an internal filling solution. Later, other researchers continued to study pH sensing materials and the electrode configuration. Thus, other various compounds (aliphatic, heteroaromatic and their derivatives) 3-9 have been studied as carriers of hydrogen ions; various configurations of this hydrogen ion-selective electrode have also been investigated. These compounds yielded a wider applicable pH range and a better selectivity coefficient. The results were particularly good when tertiary amine compounds were applied. Also, there have been developments concerning the configuration of ion-selective electrodes (ISEs). The configurations of ISEs were changed from the traditional barrel configuration 10 to wire-type electrodes. 11-14 These electrodes sometimes exhibit better selectivities than conventional-type electrodes with an internal solution. [15][16][17][18][19][20][21][22] However, the standard potential of coated-wire electrodes is often unstable, varying for one electrode during its lifetime, as well as differing among electrodes of the same type. These systems cannot provide very reproducible potentials due to blocking the electrons between the PVC membrane coating and the metal. 23 Thus, many researchers have utilized an electron conducting polymer layer with an anionic dopant. 24 They made an electroconductive layer on a metal surface by employing the electrochemical method. This layer, such as poly(aniline), poly(pyrrole), or poly(thiophene), increased the adhesion between the metal substrate and a PVC layer containing ionophore, thus enabling anion or electron transfer at the interface. Especially, poly(aniline) is a versatile material and has many different applications. This poly(aniline) film may be used to construct all solid state sensors by taking advantage of the electronic as well as ionic conductivity. 25 In this study, we used poly(aniline), which could act as a solid contact between a pH-selective PVC membrane containing the ion carrier and a metal contact. In this paper, an all solid state potentiometric sensor for hydrogen ion based on poly(aniline), covered with a plastic PVC membrane and activated by N,N,N′,N′-tetrabenzylethanediamine ionophore, is presented and evaluated in the terms of the analytical application. We a...

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Determination of nitrate in water with a new construction of ion-selective electrode

Cited by 36 publications

References 3 publications

All Solid State Hydrogen Ion Selective Electrode Based on a Tribenzylamine Neutral Carrier in a Poly(vinyl chloride) Membrane with a Poly(aniline) Solid Contact

All Solid State Hydrogen Ion Selective Electrode Based on a Tribenzylamine Neutral Carrier in a Poly(vinyl chloride) Membrane with a Poly(aniline) Solid Contact

Mercury ion selective poly(aniline) solid contact electrode based on 2-mercaptobenzimidazol ionophore

The Behavior of a Poly(aniline) Solid Contact pH Selective Electrode Based on N,N,N′,N′-Tetrabenzylethanediamine Ionophore

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