Response properties, applications and limitations of carbonate-selective polymer membrane electrodes

Greenberg, J A; Meyerhoff, Mark E.

doi:10.1016/s0003-2670(01)95310-3

Cited by 48 publications

(21 citation statements)

References 11 publications

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“…EC was measured by direct instrumental determination according to Rhoades [61]. The different forms of available mineral nitrogen were determined by ion-selective electrodes [62] on substrate samples dissolved in deionized water. Table 2.…”

Section: Substrate Characterizationmentioning

confidence: 99%

Morpho-Physiological Responses of Pisum sativum L. to Different Light-Emitting Diode (LED) Light Spectra in Combination with Biochar Amendment

et al. 2020

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Light quality and nutrient availability are the primary factors that influence plant growth and development. In a research context of improving indoor plant cultivation while lowering environmental impact practices, we investigated the effect of different light spectra, three provided by light-emitting diodes (LEDs), and one by a fluorescent lamp, on the morpho-physiology of Pisum sativum L. seedlings grown in the presence/absence of biochar. We found that all morpho-physiological traits are sensitive to changes in the red-to-far-red light (R:FR) ratio related to the light spectra used. In particular, seedlings that were grown with a LED type characterized by the lowest R:FR ratio (~2.7; AP67), showed good plant development, both above- and belowground, especially when biochar was present. Biochar alone did not affect the physiological traits, which were influenced by the interplay with lighting type. AP67 LED type had a negative impact only on leaf fluorescence emission in light conditions, which was further exacerbated by the addition of biochar to the growing media. However, we found that the combination of biochar with a specific optimal light spectrum may have a synergetic effect enhancing pea seedling physiological performances and fruit yield and fostering desired traits. This is a promising strategy for indoor plant production while respecting the environment.

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Section: Substrate Characterizationmentioning

confidence: 99%

Morpho-Physiological Responses of Pisum sativum L. to Different Light-Emitting Diode (LED) Light Spectra in Combination with Biochar Amendment

et al. 2020

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“…The gas- permeable membrane used was microporous PTFE (0.2~pm pore; W. L. Gore and Assoc.). The tubular flow-through pH electrodes were prepared as described previously for ammonium and carbonate systems [9,11].…”

Section: Preparation Of Polymer Ph Electrodes and Gas Sensorsmentioning

confidence: 99%

Polymer-membrane pH electrodes as internal elements for potentiometric gas-sensing systems

Opdycke

Parks

Meyerhoff

1983

Analytica Chimica Acta

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The use of polymer-membrane pH electrodes as internal sensing elements for the fabrication of inexpensive ammonia and carbon dioxide gas sensing systems is reported. The pH-responsive polymer membranes are prepared by incorporating tridodecylamine as the neutral carrier in plasticized poly(viny1 chloride) membranes. Both static and continuous-flow gas-sensing arrangements are described. For miniature static gas sensors, the internal polymer pH electrode can be made with or without an internal reference solution. In the latter case, the polymeric membrane is coated directly onto a graphite substrate. The polymer pH electrode can also be prepared in tubular form and used in conjunction with a gas dialysis chamber for automated continuous-flow determinations of carbon dioxide and ammonia. Slopes, response times, and reproducibility of these new gas-sensing systems are evaluated using optimized internal electrolytes, flow rates, and gas-permeable membrane materials. When appropriate reagents and materials are used, the static sensors exhibit slopes in the range 48-62 mV/decade with potentials reproducible to less than +1.5 mV at gas concentrations greater than lo3 M.

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“…An alternative approach could be the use of a carbonate ion-selective electrode (CO 3 2--ISE). Trifluoroacetophenone derivatives are well known as neutral carriers for carbonate ions [1,2,3,4,5,6]. It has been confirmed previously that such electrodes are sensitive to carbonate and not to hydrogencarbonate ions [7].…”

Section: Introductionmentioning

confidence: 93%

Improved selectivity and detection limit of the carbonate-selective electrode

Maj-Żurawska

Ziemianek

Mikołajczuk

et al. 2003

Analytical and Bioanalytical Chemistry

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The properties of the carbonate neutral carrier 4-( n-hexadecyl)-3-nitro-1-trifluoroacetylbenzene were compared with those of a similar carrier, without a nitro group, studied previously. In spite of differences in the Hammett constant of the carbonyl group responsible for interaction with the analyte, the analytical characteristics of both carriers, measured under the same conditions, were comparable. Special care was taken to avoid the presence of an excessive carbon dioxide level in the diffusion layer at the membrane-solution interface. The internal reference solution was prepared without carbonate components; the external solution was protected from contact with atmospheric carbon dioxide. Under such conditions the detection limit of both electrodes was extended to 10(-11 )mol L(-1), and the selectivity towards salicylate, chloride, and acetate was significantly improved.

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Response properties, applications and limitations of carbonate-selective polymer membrane electrodes

Cited by 48 publications

References 11 publications

Morpho-Physiological Responses of Pisum sativum L. to Different Light-Emitting Diode (LED) Light Spectra in Combination with Biochar Amendment

Morpho-Physiological Responses of Pisum sativum L. to Different Light-Emitting Diode (LED) Light Spectra in Combination with Biochar Amendment

Polymer-membrane pH electrodes as internal elements for potentiometric gas-sensing systems

Improved selectivity and detection limit of the carbonate-selective electrode

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