PL
Oznaczano zawartość azotanów i azotynów w mleku surowym pochodzącym z różnych rejonów kraju. W 37,5% próbek stwierdzono nieznacznie podwyższony poziom azotanów, a w 31,9% azotynów.
EN
The content of nitrates and nitrites in raw milk in different regions of the country was studied. The results obtained dependet both on the factory from which the samples origin and on the seasons of the year. In 37% of samples there was insignificant increase in the level of nitrates, and in 31.9 of nitrites.