Solid-State valproate ion selective sensor based on conducting polypyrrole films for determination of valproate in pharmaceutical preparations

Sabah, Simin; Aghamohammadi, Mohammad; Alizadeh, Naader

doi:10.1016/j.snb.2005.05.035

Cited by 33 publications

(15 citation statements)

References 33 publications

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“…SPME has been used for the preconcentration and cleanup of numerous different classes of compounds in a variety of matrices. [1][2][3][4][5][6][7] It has advantages of simplicity, low cost, ease of use and rapid preconcentration and extraction of analytes that exist in low concentrations. The method successfully combines sample cleanup and preconcentration into one step.…”

mentioning

confidence: 99%

Dye-doped Nanostructure Polypyrrole Film for Electrochemically Switching Solid-phase Microextraction of Ni(II) and ICP-OES Analysis of Waste Water

Shamaeli

Alizadeh

2012

ANAL. SCI.

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A nanostructure fiber based on conducting polypyrrole synthesized by an electrochemical method has been developed, and used for electrochemically switching solid-phase microextraction (ES-SPME). The ES-SPME was prepared by the doping of eriochrome blue in polypyrrole (PPy-ECB) and used for selectively extracting the Ni(II) cation in the presence of some transition and heavy metal ions. The cation-exchange behavior of electrochemically prepared polypyrrole on stainless-steel with and without eriochrome blue (ECB) dye was characterized using ICP-OES analysis. The effects of the scan rate for electrochemical synthesis, uptake and the release potential on the extraction behavior of the PPy-ECB conductive fiber were studied. Uptake and release time profiles show that the process of electrically switched cation exchange could be completed within 250 s. The results of the present study point concerning the possibility of developing a selective extraction process for Ni(II) from waste water was explored using such a nanostructured PPy-ECB film through an electrically switched cation exchange.

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mentioning

confidence: 99%

Dye-doped Nanostructure Polypyrrole Film for Electrochemically Switching Solid-phase Microextraction of Ni(II) and ICP-OES Analysis of Waste Water

Shamaeli

Alizadeh

2012

ANAL. SCI.

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“…(5), the shift in the resonant frequency of the crystal was then used to calculate the mass of the polymer. This equation assumes the current efficiency for the electropolymerisation of pyrrole is 100% and that no water is incorporated into the film [43]. The PPyDF polymer was deposited directly onto the Au on the quartz crystal as the presence of the underlying polymer film (prelayer) resulted in the film being too thick and subsequently deviations from the Sauerbrey equation, Eq.…”

Section: Characterisation Of Ppy Doped With Df By Electrochemical Quamentioning

confidence: 99%

“…The formation of VPA − doped PPy was first attempted following a technique reported by Sabah et al [43]. In that paper, the authors reported the preparation of a PPy film doped with VPA − using a pulsed galvanostatic technique, where the polymer was deposited at platinum in 0.10 M NaVPA and 0.10 M Py with the application of five pulses, each 200 s, at 0.10 mA cm −2 with a rest of 60 s between each pulse.…”

Section: Ppy Doped With Vpa −mentioning

confidence: 99%

The effect of dopant pKa and the solubility of corresponding acid on the electropolymerisation of pyrrole

Ryan

Breslin

Moulton

et al. 2013

Electrochimica Acta

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a b s t r a c tIn this paper, attempts to dope polypyrrole (PPy) with two small sized anionic drugs, diclofenac sodium salt (NaDF) and valproic acid sodium salt (NaVPA), are described. For PPy doped with DF − , unusual patterns in growth and morphology were observed. During the deposition of the polymer, the rate of electropolymerisation decreased with increasing time and higher applied potentials. The polymer had features of an insulating film, while SEM confirmed the presence of crystal-like shards on the surface of the polymer. Analyses of these crystals indicate them to be drug that may have precipitated out of solution. These findings suggest that insoluble drug crystals are formed during electropolymerisation. The formation of PPy doped with a small soluble anti-epilepsy anionic drug, VPA − , was also studied; however it was not possible to incorporate this drug during electrochemical polymerisation. Again, this was explained in terms of the equilibrium between the anion and the acid forms of VPA. At pH values below 5.6, the equilibrium of the VPA − is shifted towards the insoluble HVPA. As the monomer is oxidised, there is a decrease in the local pH in the vicinity of the electrode and this causes the HVPA to precipitate from solution. This, in turn, prevents any PPy from being deposited at the electrode.

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“…Histamine [265], histidine [266], imidazole [267,268], ketamine [269], ascorbic acid [270], oxalate [271], triamterene [272], naphazoline [273], valproate [274], cystein [275], theophiline [276], sulfosalicylic acid [277], thiosalicylic acid [278], salicylate [279,280], ketoconazole [281], clotrimazole [282], cimetidine [283], diclofenac [284], atenolol [285], picrate [286], linear alkylbenzene sulfonate [287,288], sodium dodecylsulfate [289][290][291], dodecylbenzene sulfonate [292] aresepecies the sensors of which have been introduced by Iranian researchers.…”

Section: Selective Electrodes For Drugs and Organic Speciesmentioning

confidence: 99%

“…As it is seen from Table 3, these sensors were based on ionophores like different complexes of iron(III) [265], iron(II) [270], copper(II) [271], zirconyl(IV) [277], nickel(II) [279], tin(IV) [280], lead(II) [275], aluminum(III) [278] and manganese(III) [265], 2,4,6- ClO 4 -, SCN -PME/ CGE [279] triphenylthiopyrilium perchlorate [267], 4-methyl-2,6-diphenylthiopyrylium [268], ion-exchanger sites [269], tetraphenylborate ion [272], tetraphenylborate [273], conducting polypyrrole films [274], 2,6-bis(phenyl)-4(phenyl) 3H-thiopyran [276], phthalocyanine [278], ketoconazoletetraphenyl borate ion pair [281], phosphomolybdate [282], phospoho tungstate [283], hexadecylpyridinium bromide [284], tetrakis(p-chlorophenyl) borate [285], polypyrrole [287,290], and hyamine [288], polyaniline-dodecylsulfate [289], cetylpyridinium cation [291], polyaniline [292], which have different natures and hence different selection mechanisms.…”

Section: Selective Electrodes For Drugs and Organic Speciesmentioning

confidence: 99%

One decade of research on ion-selective electrodes in Iran (1996–2006)

Ganjali

Norouzi

Faridbod

et al. 2007

JICS

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This review presents a general overview about the development of ion-selective electrodes in Iran during the past decade (1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006). All of the reported ion-selective sensors (for cations, anions and organic species) are cited in this review. Sensors for 39 cations, 12 anions, and 23 organic compounds and drugs have been reported in this reivew. Some of the main group cations (e.g. beryllium) as well as most of the lanthanide ion (i.e., presidium, erbium, lutetium, cerium, neodymium, europium, gadolinium, terbium, dysprosium, holmium, ytterbium, and thulium) sensors have been reported for the first time. It is noticable that the best reported sensors for HPO 4 2-, SO 4 2-, Cl -, ClO 4 -, Br -, and I 3 -have been designed and constructed by the Iranian researchers.

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Solid-State valproate ion selective sensor based on conducting polypyrrole films for determination of valproate in pharmaceutical preparations

Cited by 33 publications

References 33 publications

Dye-doped Nanostructure Polypyrrole Film for Electrochemically Switching Solid-phase Microextraction of Ni(II) and ICP-OES Analysis of Waste Water

Dye-doped Nanostructure Polypyrrole Film for Electrochemically Switching Solid-phase Microextraction of Ni(II) and ICP-OES Analysis of Waste Water

The effect of dopant pKa and the solubility of corresponding acid on the electropolymerisation of pyrrole

One decade of research on ion-selective electrodes in Iran (1996–2006)

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