DETERMINATION OF CADMIUM SPECIES IN MINER AL MATTER

A method for cadmium species diagnostics in mineral matter has been de veloped, which combines thermal and atomic absorption analyses and an experimental-analytical approach. It is shown that the temperature int ervals of the release of three main inorganic Cd species (sorbed, mine ral, and isomorphic) are overlapped only to a small extent, thus provi ding a reliable diagnostics of the latter. The method is quantitativel y tested on the samples of meteorites and tektites. The predominance o f sorbed Cd in them is shown. It is confirmed that diagnostics of the species of volatiles (Hg, Cd) can change the views of their abundance in the cosmos and of the temperature conditions of formation of the ob jects under consideration.