[Analysis of the N-nitrosamines in products of plant origin].

A spectrofluorometric method of analyzing the carcinogenic N-nitrosoamines in the form of 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole derivatives is proposed. The content of nitroso-amines in a number of products of the vegetative origin was determined. In some samples of beetroots, radish and apples dimethyl-nitroso-amine in concentrations of 0.7--1.5 gamma/kg was detected. A conclusion is drawn on a relatively low content of carcinogenic N-nitroso-amines in the products of the vegetable origin.