Nutritive value of daily food rations reproduced in severalregions of Poland VII.Evaluation of cobalt,chromium,nickel and selenium intakes

W racjach pokarmowych odtworzonych w latach 1987 i 1988 w Lublinie, Olsztynie, Poznaniu, Warszawie i Wrocławiu oznaczono zawartości chromu, kobaltu, niklu i selenu. Oceniono pokrycie zapotrzebowania organizmu człowieka na wymienione pierwiastki w świetle limitów uważanych w chwili obecnej za bezpieczne i odpowiednie.On the basis of the data of the Chief Census Bureau, concerning the consuption of more than 80 food products, we reproduced in years 1987 and 1988 in Lublin, Olsztyn, Poznan, Warszawa and Wrocław the food rations characteristic of manual workers' families and of other families with medium incomes. In samples of these diets, chromium, cobalt and nickel were determined by the ASA method, and selenium-spectrophotometrically. Daily intakes were: for cobalt 15-32 µg, chromium 65-187 µg, nickel 138-316 µg and selenium 93-233 µg. It was found that the investigated food rations cover the requirements of these elements, and create no risk of their excess in food. The present results indicate that the levels of the investigated elements are mainly related to the kind of food products and to their composition, whereas they depend to a lesser extent on the region in which the food ration has been preproduced