EN
Blood concentration changes of 2-, 3- and 4-NT after their oral administration were examined vs. time. The results show that the process of NT isomer absorption, distribution and elimination can be described by the two-compartment open Wagner-Nelson model. The maximum blood 3-NT concentration was observed after 0.75h, whereas 2- and 4-NT reached its maximum after 3.5h and 4h, respectively. The distribution of 2-NT and 4-NT from blood to tissues is slower than that of 3-NT. 3-NT is distributed significantly faster from tissues to blood than 2- and 4-NT. The elimination rate constants show that the excretion of 2- and 4-NT is slower than that of 3-NT.