Document Type

Article

Publication Date

7-14-2006

Source Publication

Analytica Chimica Acta

Source ISSN

0003-2670

Abstract

Ten Ag+-selective ionophores have been characterized in terms of their potentiometric selectivities and complex formation constants in solvent polymeric membranes. The compounds with π-coordination show much weaker interactions than those with thioether or thiocarbamate groups as the coordinating sites. Long-term studies with the best ionophores show that the lower detection limit of the best Ag+ sensors can be maintained in the subnanomolar range for at least 1 month. The best ionophores have also been characterized in fluorescent microspheres. The so far best lower detection limits of 3 × 10−11 M (potentiometrically) and 2 × 10−11 M Ag+ (optically) are found with bridged thiacalixarenes.

Comments

Accepted version. Analytica Chimica Acta, Vol. 572, No. 1 (July 2006): 1-10. DOI. © Elsevier 2006. Used with permission.

NOTICE: this is the author’s version of a work that was accepted for publication in Analytica Chimica Acta. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Analytica Chimica Acta, VOL 572, ISSUE 1, July 14, 2006, DOI.

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