MAGNETIC-RESONANCE-IMAGING OF RUTHENIUM-CATALYZED, CERIUM-CATALYZED, AND FERROIN-CATALYZED BELOUSOV-ZHABOTINSKY REACTIONS

Magnetic resonance imaging studies of the manganese-catalyzed Belousov -Zhabotinsky (B-Z) reaction have been previously reported. In this pap er the results of an investigation of the magnetic relaxation properti es of cerium, ruthenium, and iron ions as catalysts for the B-Z system are presented. Criteria are given for the selection of imaging parame ters which should yield maximum contrast. Magnetic resonance images of the cerium- and ruthenium-catalyzed B-Z reactions are obtained for th e first time. However, the attempt to image the ferroin-catalyzed reac tion is unsuccessful. The reason for the failure is identified.