[Iron determination by carbon rod atomizer (author's transl)].

A method is described for direct analysis of iron in proteins. The organic and inorganic matrices can be removed during the ashing step. The results obtained with simple aqueous standards were confirmed for all determinations by the standard addition method. The interpretation of the results by means of regression analysis showed, in dependence on the biological material (Haemoglobin, suspension of Microsomes, Cytochrome P 450), relative standard deviations between 4 and 20%.