Design and application of neutral carrier-based ion-selective electrodes. Plenary lecture

Simon, W.; Pretsch, E.; Morf, Werner E.; Ammann, D.; Oesch, U.; Dinten, O.

doi:10.1039/an9840900207

Cited by 36 publications

(14 citation statements)

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“…Ionized calcium measurement in a solution may be performed by several methods based on different analytical principles: the biological "frog heart" method (1), spectrophotometry with calcium indicators (2)(3)(4)(5), and potentiometry with calcium ion-selective electrodes (ISE) (6)(7)(8)(9)(10)(11)(12)(13)(14) which respond to changes in thermodynamic activity of calcium ions. For ionized calcium measurement in plasma, potentiometry is the method of choice for the reference method.…”

Section: Methods Of Measurementmentioning

confidence: 99%

IFCC Recommended Reference Method for the Determination of the Substance Concentration of Ionized Calcium in Undiluted Serum, Plasma or Whole Blood

Burnett¹,

Christiansen²,

Covington³

et al. 2000

Clinical Chemistry and Laboratory Medicine

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A reference method is described for the determination of the substance concentration of ionized calcium in plasma by which ionized calcium (free or unbound) may be reliably determined on the basis of calibration with aqueous solutions with known concentration of ionized calcium. The composition of the calibration solutions is chosen such that the activity coefficient of the calcium ion is assumed to be identical both in the calibration solutions and in "normal" plasma, i.e. by convention, the ionic strength (Im) is 0.160 mol/kg. The convention is adopted of reporting ionized calcium measurements as concentration expressed as mmol/l. The proposed reference method for ionized calcium measurement in plasma is based on the use of a cell consisting of an external reference electrode with a saturated potassium chloride liquid/liquid junction in combination with a calcium ion-selective membrane electrode of defined construction and performance. Procedures for using the reference cell and a protocol for sample measurement are described. The preparation of the calibration solutions to be used are described in detail in Appendix A, secondary calibration solutions and check standards in Appendix B, and reference cell vessel design in Appendix C.

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Section: Methods Of Measurementmentioning

confidence: 99%

IFCC Recommended Reference Method for the Determination of the Substance Concentration of Ionized Calcium in Undiluted Serum, Plasma or Whole Blood

Burnett¹,

Christiansen²,

Covington³

et al. 2000

Clinical Chemistry and Laboratory Medicine

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show abstract

“…The response slopes typical for monovalent and divalent ions as well as intermediate slopes were observed, which complicates significantly the interpretation of selectivity coefficients. Some neutralcarrier based lead ion selective electrodes were based on oxa-or dioxadicarboxylic acid diamides, [34][35][36][37] and exhibited nearly Nernstian responses to PbA + (where A is Cl -, OH -, Ac -or NO 3-).…”

Section: Ion-selective Sensorsmentioning

confidence: 99%

Developing Sensing Materials for Multisensor Systems on the Basis of Extraction Data

Kirsanov¹,

Бабаин²

2014

Multisensor Systems for Chemical Analysis

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Modern analytical chemistry is a highly multidisciplinary research field, and advances within one branch are often adopted by neighbouring research directions. This is especially true in liquid extraction and sensor development fields. The elementary act of binding of a target ion with an organic ligand is of crucial importance in both of these research areas. This chapter reviews how one can use data and substances developed for liquid extraction of various metals to prepare chemical sensors that can be employed in multisensor systems for simultaneous determination of several metals in complex mixtures. Three case studies involving sensor arrays employing various extracting agents of different chemical nature are described.

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“…These compounds also play an important role as carriers for alkali and alkaline-earth metal ions in ionselective electrodes (23)(24)(25)(26). In recent years, this field of application has been opened up by Simon and co-workers specially for the structure type of the polyfunctional podands with ether diamide structure (27,28). The authors have shown that such non cyclic amide-functionalized ionophores are equal and superior, EXTRACTION OF STRONTIUM WITH AMID0 PODANDS 437 respectively, to macrocyclic compounds such as crown compounds and cryptands with regard to selectivity towards alkaline-earth ions (29,30).…”

Section: Stephan Et Almentioning

confidence: 99%

Liquid-Liquid Extraction of Strontium With Amido Podands

Stephan¹,

Gloe²,

Beger³

et al. 1991

Solvent Extraction and Ion Exchange

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Design and application of neutral carrier-based ion-selective electrodes. Plenary lecture

Cited by 36 publications

References 0 publications

IFCC Recommended Reference Method for the Determination of the Substance Concentration of Ionized Calcium in Undiluted Serum, Plasma or Whole Blood

IFCC Recommended Reference Method for the Determination of the Substance Concentration of Ionized Calcium in Undiluted Serum, Plasma or Whole Blood

Developing Sensing Materials for Multisensor Systems on the Basis of Extraction Data

Liquid-Liquid Extraction of Strontium With Amido Podands

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