Coated-Graphite Electrode Based on Poly(vinyl chloride)– Aluminum Phthalocyanine Membrane for Determination of Salicylate

Shahrokhian, Saeed; Amini, Mohammad K.; Kolagar, S.; Tangestaninejad, Shahram

doi:10.1006/mchj.1999.1794

Cited by 27 publications

(15 citation statements)

References 32 publications

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“…In particular, they have been successfully used as ionophores for potentiometric sensing, which takes advantage of their selective coordination chemistry and structural diversity [29,30]. The type of phthalocyanine ring, the nature of their peripheral substituents, and the choice of the central metal control the axial ligation of different anions to these compounds [31,32]. We attached the phthalocyanine ionophores I and II covalently to polyacrylamide (PAA) through the condensation reaction between the carboxyl groups of the ionophores I and II and the NH 2 groups of PAA, giving ionophores III and IV, respectively.…”

Section: Effect Of Ionophores Type Plasticizer and Ionic Sites On Rmentioning

confidence: 99%

Solid-Contact Perchlorate Sensor with Nanomolar Detection Limit Based on Cobalt Phthalocyanine Ionophores Covalently Attached to Polyacrylamide

Abbas¹,

Radwan²,

Bühlmann³

et al. 2011

AJAC

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Novel solid-contact perchlorate sensors based on cobalt phthalocyanine-C-monocarboxylic acid (I), and cobalt phthalocyanine-C,C,C,C-tetracarboxylic acid (II) as free ionophores and covalently attached to polyacrylamide (PAA)-ionophores III and IV, respectively were prepared. The all solid-state sensors were constructed by the application of a thin film of a polymer cocktail containing a phthalocyanine ionophore and cetyltrimethylammonium bromide (CTMAB) as a lipophilic cationic additive onto a gold electrode precoated with the conducting polymer poly (3,4-ethylenedioxythiophene) (PEDOT) as an ion and electron transducer. The sensor with 10.3% of ionophore (III) covalently attached to plasticizer-free poly (butyl methacrylate-co-dodecyl methacrylate) (PBDA) exhibited a good selectivity for perchlorate and discriminated many ions, in- -2 mol·L -1 with a lower detection limit (LDL) of 1 × 10 -9 mol·L -1 and gave a stable response over a pH range of 4 -10.5. The all-solid state sensors were utilized for the selective flow injection potentiometric determination of perchlorate in natural water and human urine samples in the nanomolar concentration range.

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Section: Effect Of Ionophores Type Plasticizer and Ionic Sites On Rmentioning

confidence: 99%

Solid-Contact Perchlorate Sensor with Nanomolar Detection Limit Based on Cobalt Phthalocyanine Ionophores Covalently Attached to Polyacrylamide

Abbas¹,

Radwan²,

Bühlmann³

et al. 2011

AJAC

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show abstract

“…Tetraphenylporphyrin complexes of Sn(IV), Mn(III) and Co(III) have been used as ionophore for the preparation of salicylate and thiocyanate sensors [9 ± 13]. Some complexes of Al(III) and Sn(IV) have been used for preparation of highly selective electrodes for salicylate [14,15]. Lipophilic derivatives of vitamin B12 [16] and Schiff base complexes of Co(II) [17] have been employed as ionophores in iodide-selective electrodes.…”

Section: Introductionmentioning

confidence: 99%

Iodide‐Selective Electrode Based on Copper Phthalocyanine

2002

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Copper phthalocyanine was used as ion carrier for preparing polymeric membrane selective sensor for detection of iodide. The electrode was prepared by incorporating the ionophore into plasticized poly(vinyl chloride) (PVC) membrane, coated on the surface of graphite electrode. This novel electrode shows high selectivity for iodide with respect to many common inorganic and organic anions. The effects of membrane composition, pH and the influence of lipophilic cationic and anionic additives and also nature of plasticizer on the response characteristics of the electrode were investigated. A calibration plot with near-Nernestian slope for iodide was observed over a wide linear range of five decades of concentration (5 Â 10 À6 À 1 Â 10 À1 M). The electrode has a fast response time, and micromolar detection limit (ca. 1 Â 10 À6 M iodide) and could be used over a wide pH range of 3.0 ± 8.0. Application of the electrode to the potentiometric titration of iodide ion with silver nitrate is reported. This sensor is used for determination of the minute amounts of iodide in lake water samples.

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“…The use of tin tetrakis-tert-butyl phthalocyanate [9] in membrane salicylate-selective electrodes gave the ISE with the best characteristics. Recently, we and others reported on the high selectivity of Al(III) phthalocyanates to salicylate [11,12]. It is assumed that the hard metal center, Al(III), strongly interacts with salicylate.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the data on Sn(IV) and Al(III) phthalocyanates as salicylate ionophores [9,11] are obtained for various membrane compositions; selectivity coef®cients were determined by different techniques and even the design of electrodes was different.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of the Metal Phthalocyanates as Active Components in Salicylate-Selective Electrodes

et al. 2001

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Coated-Graphite Electrode Based on Poly(vinyl chloride)– Aluminum Phthalocyanine Membrane for Determination of Salicylate

Cited by 27 publications

References 32 publications

Solid-Contact Perchlorate Sensor with Nanomolar Detection Limit Based on Cobalt Phthalocyanine Ionophores Covalently Attached to Polyacrylamide

Solid-Contact Perchlorate Sensor with Nanomolar Detection Limit Based on Cobalt Phthalocyanine Ionophores Covalently Attached to Polyacrylamide

Iodide‐Selective Electrode Based on Copper Phthalocyanine

Comparative Study of the Metal Phthalocyanates as Active Components in Salicylate-Selective Electrodes

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