Periodic Pulses of Calcium Ions in a Chemical System

Periodic Pulses of Calcium Ions in a Chemical System

By coupling the bromate−sulfite−ferrocyanide oscillating chemical reaction with the complexation of calcium ion by EDTA, we construct a system that generates periodic pulses of free Ca2+ with an amplitude of 2 orders of magnitude and a period of ca. 20 min. These pulses may be observed either with a...

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Veröffentlicht in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2006-06, Vol.110 (24), p.7588-7592
Hauptverfasser: Kurin-Csörgei, Krisztina, Epstein, Irving R, Orbán, Miklós
Format: Artikel
Sprache:eng
Schlagworte:
Animals
Bromates
Calcium - chemistry
Calcium - metabolism
Calcium Signaling
Clinical Laboratory Techniques - instrumentation
Ferrocyanides
Hydrogen-Ion Concentration
Kinetics
Sulfites
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Zusammenfassung:By coupling the bromate−sulfite−ferrocyanide oscillating chemical reaction with the complexation of calcium ion by EDTA, we construct a system that generates periodic pulses of free Ca2+ with an amplitude of 2 orders of magnitude and a period of ca. 20 min. These pulses may be observed either with a calcium ion-selective electrode or with Arsenazo(III) as an indicator. We describe the systematic design procedure and the properties of this first abiotic calcium-based chemical oscillator.
ISSN:1089-5639
1520-5215
DOI:10.1021/jp0625311