The presence of toxic species, including heavy metals and organometals, has significantly altered the character of the Chesapeake Bay and other waterways. In order to control these species, their chemical transformations and interactions in water and in sediment must be understood. The occurrence of several organometal substances in the aquatic environment will be discussed with special emphasis on silicones, methylmercury species, and tributyltin species. The analytical problems of measuring these species, which occur at ultratrace levels, will be discussed. Some of the analogous problems, e.g., cadmium, facing the newly emerging democracies of Eastern Europe, with special emphasis on the Czech Republic, will also be mentioned.
Mr. Bellama received his Ph.D in chemistry from the University of Pennsylvania in 1966 and immediately joined the faculty of the Department of Chemistry, University of Maryland, College Park. He has been a Science Research Council fellow in Great Britain, a National Academy of Sciences Exchange Scientist on several occasions in the Czech Republic, an invited lecturer for the (former) Soviet Academy of Sciences, a visiting Professor at the University of Paris (XI), and a Senator J. W. Fulbright scholar in the Czech Republic. His research interests comprise the above environmental topics, organosilicon chemistry, nuclear magnetic resonance, and science education.
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