DETERMINATION OF ARSENIC, CHROMIUM, MERCURY, SELENIUM AND ZINC IN TROPICAL MARINE FISH BY NEUTRON-ACTIVATION

Determination of arsenic, chromium, mercury, selenium and zinc in seve ral commonly consumed tropical marine fishes have been carried out by neutron activation followed by radiochemical separation to remove the interfering activities of sodium, potassium, bromine, and phosphorus, etc., in order to establish the baseline data and to measure the level s of contamination, if any. The results of this study positively indic ate that the marine fishes of Bangladesh have concentrations much belo w the permissible levels for these toxic elements. A radiochemical sch eme for the separation of seven trace elements in biological material is also presented in this paper.