Oscillatory concentration pulses of some divalent metal ions induced by a redox oscillator

Physical Chemistry Chemical Physics : PCCP
Viktor HorváthMiklós Orbán

Abstract

Oscillations in the concentration of divalent ions Cd(2+), Ca(2+), Zn(2+), Co(2+) and Ni(2+) are induced by adding these species to the BrO(3)(-)-SO(3)(2-) chemical oscillator in a flow reactor. Producing periodic pulses in the concentrations of these non-redox ions extends our earlier approach to generating forced periodic behavior. Instead of driving pH-dependent equilibrium reactions of the target ion by a pH oscillator backward and forward, we now couple a redox core oscillating reaction to two consecutive reactions taking place between the components of the oscillator and the target element. In the systems examined here, the oscillatory reductant SO(3)(2-) binds the free metal ion in a MSO(3) precipitate, reducing its level to a minimal value when [SO(3)(2-)] is high, followed by release of the metal ion when the sulfite is oxidized by BrO(3)(-).

References

Jan 15, 2005·Nature·Krisztina Kurin-CsörgeiMiklós Orbán
Jun 16, 2006·The Journal of Physical Chemistry. a·Krisztina Kurin-CsörgeiMiklós Orban
Jul 15, 2006·The Journal of Physical Chemistry. a·Tibor G Szantó, Gyula Rabai
May 2, 2008·The Journal of Physical Chemistry. a·Viktor HorvathMiklós Orban

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Citations

Oct 5, 2010·Angewandte Chemie·István LagziBartosz A Grzybowski
Jun 28, 2012·The Journal of Physical Chemistry. a·Lin JiXiangting Hou
Apr 12, 2017·The Journal of Physical Chemistry. a·Gábor HollóIstván Lagzi
Aug 14, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·István LagziBartosz A Grzybowski
Dec 16, 2020·The Journal of Physical Chemistry. a·Norbert NémetIstván Lagzi
Feb 5, 2019·The Journal of Physical Chemistry. a·Gábor Holló, István Lagzi

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