Trace elements fractionation food

NAA method has been apphed to study the concentration distributions of typical toxic heavy metals in small amounts of industrial type air particulate fractions. Generally, toxic components are distributed in two forms in the particulates, e.g., in a matrix involved form and in a surface deposited form of which the latter one can be considerably enriched. Bnme (1973) has hsted various methods for the determination of interference-free trace elements in water, biological specimens, and food sources by means of NAA involving the use of a cold neutron irradiation procedure. 

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