Occurrence of and exposure to N-nitrosamines in Sweden: a review.

During the last ten years, over 900 samples of foods, snuff and other products on the Swedish market were analysed for N-nitrosamines. The average daily intake of volatile N-nitrosamines from foods was estimated to be 0.29 micrograms/person, and the daily intake of tobacco-specific N-nitrosamines from snuff was calculated to be up to 110 micrograms/snuff user.