Photocured polymers in ion-selective electrode membranes

Cattrall, Robert W.; Iles, Peter J.; Hamilton, I.C.

doi:10.1016/s0003-2670(00)86248-0

Cited by 42 publications

(11 citation statements)

References 6 publications

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“…Such matrices have been proposed already more than 20 years ago [58] but only recently they have been investigated more systematically [59 -62]. By careful selection of the portion or hard (short chain) and soft (long chain) components [60,63] or alternatively the amount of cross-linking agents [64], plasticizer-free membranes of tailored hardness can be prepared.…”

Section: Suppressing Ion Fluxes In the Membranementioning

confidence: 99%

Approaches to Improving the Lower Detection Limit of Polymeric Membrane Ion‐Selective Electrodes

et al. 2006

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Section: Suppressing Ion Fluxes In the Membranementioning

confidence: 99%

Approaches to Improving the Lower Detection Limit of Polymeric Membrane Ion‐Selective Electrodes

et al. 2006

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“…Leaching out of the active component and the plasticizer from the polymeric matrix causes the deterioration of the response of the electrodes and leads to limited electrode life time [7][8][9]. Up to date, several approaches were made to solve this problem including chemical anchoring of PVC membranes containing OH groups to an oxide surface [10,11], mechanical attachment of the membrane [12], photocuring techniques [13,14], and several other polymer materials [15][16][17][18][19]. Among them, SR based membranes were formulated without a plasticizer (which is owing to their low glass transition temperature), because it adhere strongly to most solid surfaces and exhibit less interference from lipophilic anions present in biological fluids.…”

Section: Introductionmentioning

confidence: 99%

Characterization of All Solid State Hydrogen Ion Selective Electrode Based on PVC-SR Hybrid Membranes

Piao

Yoon

Jeon

et al. 2003

Sensors

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Hydrogen ion selective membranes formulated with 3140 RTV silicone rubber (SR) in PVC were studied to extend the life time of solid state ion sensors through improved membrane adhesion. All solid state hydrogen ion selective electrodes were prepared by incorporation of tridodecyl amine (TDDA) as an ionophore, potassium tetrakis[3,5-bis(pchlorophenyl)borate (KTpClPB) as a lipophilic additive, bis(2-ethylhexyl)adipate (DOA) as a plasticizer. Their linear dynamic range was pH 2.0-11.0 and showed the near Nernstian slope of 55.1±0.2 mV/pH (r=0.999). The influences from alkali and alkaline earth metal ions were studied for the response of the final ISE membrane composition. Impedance spectroscopic data showed that the resistance was increased by increasing SR content in PVC. Brewster Angle Microscopy (BAM) image showed clear differences according to the SR compositions in PVC. Life time of the all solid state membrane electrode was extended to about 2 months by preparing the membrane with PVC and SR. The standard reference material from NIST (2181 HEPES Free acid and 2182 NaHEPESate) was tested for the ISE and it gave a good result.

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“…It has been recommended to use the dioctyl phenylphosphonate plasticizer in conjunction with the calcium bis[4-(1',1',3',3'-tetramethylbutyl)phenyl] phosphate ionophore in liquid polymer membranes [16][17][18][19][20]. The selectivity coefficients over monovalent and most divalent interfering ions for the calcium ISE in this study was generally superior compared to that of a previously reported photo-cured calcium ISE [2]. The difference in the observed selectivity coefficients can be attributed to the presence of the lipophilic additive, potassium tetrakisb-chlorophenyl)borate, in the photo-cured membrane presented in this study.…”

Section: Performance Of the Photo-cured Calcium Isementioning

confidence: 81%

“…Other advantages were good sensitivity, fast response and excellent adhesion to solid-contact electrodes. Photo-cured membranes for ISEs that have been developed to-date are calcium [1][2][3], lithium [7], nitrate [6], pH [5], potassium [4] and sodium 171, most of which were applied to flow injection potentiometric (FIP) measurements.…”

Section: Introductionmentioning

confidence: 99%

A photo‐cured calcium ion‐selective electrode for use in flow injection potentiometry that tolerates high perchlorate levels

Dimitrakopoulos

Farrell²,

Iles³

1996

Electroanalysis

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An improved photo-cured membrane selective to calcium was developed based on the calcium bis[4-(l , I ,3,3-tetramethylbutyl)phenyl] phosphate ionophore and incorporates the lipophilic additive, potassium tetrakis(pchloropheny1)borate. The calcium electrode exhibited a hyper-Nernstian response of 31.0 mV change per activity decade and a log-linear range between 1 x lo-' to 0. I M in pure calcium chloride solution, in steady-state mode. The calcium electrode was fast responding, reaching 90% of steady-state value in 5 s making it ideal for flow injection measurements. The photo-cured electrode can measure calcium in a high perchlorate background, and was used to determine the total calcium level in full cream milk that was digested by a nitric/perchloric acid mixture. The results obtained were in good agreement with atomic absorption spectroscopy measurements.

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Photocured polymers in ion-selective electrode membranes

Cited by 42 publications

References 6 publications

Approaches to Improving the Lower Detection Limit of Polymeric Membrane Ion‐Selective Electrodes

Approaches to Improving the Lower Detection Limit of Polymeric Membrane Ion‐Selective Electrodes

Characterization of All Solid State Hydrogen Ion Selective Electrode Based on PVC-SR Hybrid Membranes

A photo‐cured calcium ion‐selective electrode for use in flow injection potentiometry that tolerates high perchlorate levels

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