Institucio Catalana De Recerca I Estudis Avancats

Universitat Rovira I Virgili

Fundacio Institut Catala D'investigacio Quimica (iciq)

Universidad Rovira I Virgili (urv)

Fundacio Institut Catala D'investigacio Quimica

Pascal Blondeau

Francisco Javier Andrade

Tomás De Aquino Guinovart Pavón

Louis Adriaenssens

Pau Ballester

Francesc Xavier Rius

Daniel Hernandez Alonso

Marta Novell Recasens

Jhonattan Frank Baez Vasquez

Pär Robert Erik William Blanking

Rafael Wytze Fenwick Hoekstra

Daniel HERNÁNDEZ Alonso

Tomás De Aquino Guinovart PAVÓN

A potentiometric cell capable of selectively measuring potassium comprising an ion-selective working electrode composition prepared from a carrier solvent composition comprising between 1.5 and 2.4 mg of Valinomycin, between 0.4 and 0.6 mg of potassium Tetrakis (4-chlorophenyl) borate (KTFPB), between 52.48 and 78.72 mg of Poly(vinylchloride) (PVC), and between 103.52 and 155.28 mg of Bis(2-ethylhexyl) sebacate (DOS) per ml of the carrier solvent in combination with a specially adapted reference electrode. The cell exhibits improved precision in potassium ion determinations and high selectivity for potassium ions over other cations in a sample specimen such as whole blood or saliva. The electrode compositions exhibits improved properties over a long period of time and therefore has greater shelf life.

Point-of care device for the selective detection of potassium

Compounds are of the formula (Ia), (Ib), (Ic), or are stereoisomers thereof, wherein: R1 is hydrogen, (C1-C20)alkyl; (C3-C20)alkenyl; (C3 C20)alkynyl; (C1-C6)alkyl-O&#x2014;; (C3-C20)cycloalkyl; (C1 C20)haloalkyl; (C6-C20)aryl optionally substituted; (C6-C20)heteroaryl optionally substituted; R2 and R2' are hydrogen; (C1-C20)alkyl; (C1-C6)alkyl-O&#x2014;; (C1-C6)haloalkyl; halogen; cyano; and nitro; Z1 to Z4 are diradicals of formula (III) wherein A1 and A2 are O&#x2014; or NR3-, wherein R3 is selected from the group consisting of hydrogen and (C1-C20)alkyl; and G is (C1-C6)alkyl; &#x2014;P(&#x2550;S)R5-; &#x2014;P(&#x2550;O)R4; &#x2014;P(&#x2550;O)(OR4)-; &#x2014;P(&#x2550;O)(NR6R7)-; &#x2014;S(&#x2550;O)2-; S(&#x2550;O)&#x2014;; or &#x2014;C(&#x2550;O)&#x2014;; and Y1 to Y4 are (C1-C8)alkyl; (C3-C7)cycloalkyl; (C6-C20)aryl optionally substituted; or (C6-C20)heteroaryl optionally substituted; and FG1 and FG2 are H, OH, or NHR8.

Calixpyrrole compounds and creatinine-selective electrodes comprising them

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Tarragona, Spain

Pascal Blondeau