Portal absorption of ~14C after ingestion of spiked milk with ~14C-phenanthrene, ~14C-benzo[a]pyrene or ~14C-TCDD in growing pigs

摘要

Polycyclic aromatic hydrocarbons(PAHs) and dioxins are lipophilic organic pollutants occurring widely in the terrestrial environment. In order to study the PAHs and 2,3,7,8-tetrachlorodibenzo-p-dioxin(TCDD) transfer in the food chain, pigs have been fed with milk mixed either with ~14C-phenanthrene, with ~14C-benzo[a]pyrene or with ~14C- TCDD. The analysis of portal and arterial blood radioactivity showed that both PAHs and TCDD were absorbed with A maximum concentration at 4-6 h after milk ingestion. Then, the blood radioactivity decreased to reach background Levels 24 h after milk ingestion.