Response mechanism of a neutral carrier Hg(ii) polymeric membrane ion-selective electrode. SEM and EDAX study

Pérez-Marín, L.; López-Valdivia, H.; Ávila-Pérez, Pedro; Otazo-Sánchez, Elena María; Macedo-Miranda, G.; Gutiérrez-Lozano, O.; Chamaro, J. Alonso; Torres-Orozco, J. De la; Carapia-Morales, L.

doi:10.1039/b004532m

Cited by 22 publications

(13 citation statements)

References 9 publications

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“…Therefore, F3DET is responsible for the selectivity of the ISE to Cd (II) cation. The relation metal/ionophore was determined by chemical microanalysis The results showed that for M2 and M3 the Cd/S relation was 1:1 which corresponds to that reported in the literature for ISE containing a neutral carrier 11 .…”

supporting

confidence: 66%

Preparation and Study of a 1-Furoyl-3,3-Diethylthiourea Electrode

Lazo

Bustamante

Jiménez

et al. 2006

J. Chil. Chem. Soc.

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Cadmium (II) electrode based on plasticized PVC membranes with 1-furoyl-3,3-diethyl thiourea as ionophore and tributylphosphate as plasticizer has been developed. The membrane was applied on a support of conducting epoxy resin. Some parameters of evaluation of the electrode are presented in this work. The constructed electrode showed linear response in the concentration range of 10-6-10-3 mol/dm 3 , had a slope of 28.5 mV/decade, a detection limit (DL) of 2.10-6 mol/dm 3 and a lower limit of lineal range (LLLR) of 4.2.10-6 mol/dm 3. The static response time obtained was less than 20 seconds. The Cd/S relationship in the membrane was 1:1, as was determined by chemical microanalysis of energy dispersive X-ray spectroscopy (EDS). The constructed electrodes had a lifetime of 5 days.

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supporting

confidence: 66%

Preparation and Study of a 1-Furoyl-3,3-Diethylthiourea Electrode

Lazo

Bustamante

Jiménez

et al. 2006

J. Chil. Chem. Soc.

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“…Test solutions were at an ionic strength of 0.1 M maintained by sodium nitrate and the pH value of the solutions was maintained at 6 with PIPES buffer 0.01 M. Before each set of measurements, the electrode surface was renovated and the ISE was introduced in 0.1 M NaNO 3 and 0.01 M PIPES solution during 15 ± 20 minutes to obtain steady potential measurements. The addition method was used as a standard technique for evaluating the electrode response characteristics [32,33]. The additions were made with micropipettes, keeping the tip of the micropipettes just above the surface of solutions while making the addition [18].…”

Section: Emf Measurementsmentioning

confidence: 99%

Copper(II) Ion‐Selective Electrodes Based on Dithiosalicylic and Thiosalicylic Acids

et al. 2003

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Potentiometric carbon paste electrodes for copper(II) based on dithiosalicylic and thiosalicylic acids are described. The sensor based on dithiosalicylic acid (DTS) exhibits a linear response with a nearly Nernstian slope of 27.7 mV per decade, whereas the electrode based on thiosalicylic acid (TS) shows a super-Nernstian slope. The limits of detection for the DTS sensor and the TS sensor are 10 À 7.9 and 10 À 6.3 M for copper(II) activity, respectively. Selectivity coefficients are tabulated, and the influence of the pH on the response of these ISEs is studied. The DTS electrode is successfully used for potentiometric titration of humic acids with copper in order to get more information about complexing properties of these acids.

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“…The construction of sensitive and correct appliances based on electrochemical sensors, capable of quantifying and detecting the concentration of contaminating substances in different ecosystems has been the subject of growing significance in recent years (Malinowska et al, 2000;Pineros et al, 1998;Perez-Marin et al, 2001;Arada Perez et al, 2003). Because ion selective electrodes show good selectivity for different ions, so they are very suitable for measuring the content of the considered ions.…”

Section: Introductionmentioning

confidence: 99%

Design, construction and investigating functionality of a nickel (II) ion selective electrode

Lari¹,

Baghdar²,

Aghaie³

et al. 2012

Int. J. Phys. Sci.

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Ni 2+ ion-selective electrode (Ni-ISE) based on plasticized poly(vinyl chloride) (PVC) membrane with 25, 26, 27 tri propoxy 28, Amino 5, 11, 17, 23-tetra-tert-butyl-calix[4]arene as ionophore and dibutyl phthalate (DBP) as plasticizer was designed and constructed. The Ni-ISE showed a linear reply in the concentration range of 1.0 × 10-1 to 1.0 × 10-4 M with slope of 29.3 ± 0.5 mV/decad. The Ni-ISE response time was ≤ 6 s and was used for two months with no deviation in the pH range 4 to 9. The best performance was obtained with a membrane composition of 30% PVC, 62% DBP, 3% 25, 26, 27-tripropoxy-28, amino 5, 11, 17, 23-tetra-tert-butyl-calix[4]arene and 5% potassium tetrakis[p-cholorophenyl]borate (KTpClPB). Its detection limit was 1.0 × 10-5 M. The selectivity coefficients , for different cations were calculated by the matched potential method (MPM). The scanning electron microscopy (SEM) of the Ni-ISE's membranes showed some morphological changes during its life span, probably due to both the reaction between the Ni 2+ ion and / or less of the membrane parts by permeation.

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Response mechanism of a neutral carrier Hg(ii) polymeric membrane ion-selective electrode. SEM and EDAX study

Cited by 22 publications

References 9 publications

Preparation and Study of a 1-Furoyl-3,3-Diethylthiourea Electrode

Preparation and Study of a 1-Furoyl-3,3-Diethylthiourea Electrode

Copper(II) Ion‐Selective Electrodes Based on Dithiosalicylic and Thiosalicylic Acids

Design, construction and investigating functionality of a nickel (II) ion selective electrode

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