Analityczna i obliczeniowa ocena pobrania kadmu, rteci i olowiu z calodziennymi racjami pokarmowymi osob doroslych

W całodobowych racjach pokarmowych osób dorosłych z terenu województwa lubelskiego oceniono zawartość kadmu, rtęci i ołowiu. Oceny poziomu pobrania toksycznych pierwiastków dokonano techniką obliczeniową Z wykorzystaniem programu FOOD oraz metodą atomowej spektrometrii absorpcyjnej. Kadm i ołów oznaczono techniką ekstrakcyjną po spopieleniu próbek, natomiast rtęć techniką zimnych par po mineralizacji próbek kwasem azotowym i siarkowym.

Eighty three whole day rations of forty one adults from the Lublin province were examined in 1995 and 1996 for cadmium, mercury and lead content. Cadmium and lead were determined by flame atomic absorption spectrometry using ammonium pyrrolidinedithiocarbamate (APDC) as the complexing agent and 4-methyl-2-pentanone as the organic phase. Mercury was determined by cold vapour atomic absorption spectrometry after wet digestion with nitric and sulphuric acids. The level of the daily intake of cadmium, mercury and lead was also calculated by the „FOOD" programme based on Polish „Tables of trace elements in food products". Average cadmium, mercury and lead intakes with women's diets were: 19 ± 6.5 µg, 5.4 ± 1.4 µg, 90 ± 18 µg in 1995, and 15 ± 4.5 µg, 4.6 ± 1.1 µg, 85 ± 22 µg in 1996, respectively. The corresponding figures for men's diets were 31 ± 8.4 µg, 7.313.3 µg, 135 ± 34 µg in 1995, and 20 ± 5.1 µg, 5.5 ± 1.8 µg, 104 ± 133 µg in 1996, respectively. There were significant differences between the analytical and calculated results (the calculated values sometimes were almost 100% higher). In the majority of the studied diets, the levels of the toxic elements were below 50% PTWI (Provisional Tolerable Weekly Intake).