Estimate of the ingestion of sulphites for students by the qualitative analysis of diet. The sulphites, represented for the SO 2 , are part of an important group of additives, have used for centuries as preservatives in dry fruits, fruit juices, wines. In Brazil there are no data on use of sulphites by the food industry and research on their consumption by population. Thus, the objective of this research was to estimate the ingestion of sulphites in two groups of high school students, one of privative school and another of public school. The data were collected through 24-hour dietary recall, that allowed to relate the sources of sulphites in the diet. For calculation of the consumption of this additive the MPL, stabilished by the Brazilian legislation was used for each sources. None of students exceeded the ADI of 0.70 mg SO 2 /kg bw/day, with average of consumption of 0.07 mg SO 2 /kg bw/day ( p < 0.001), without statistical difference (p = 0.643) between privative and public school. Heavy consumers (consumption of more than 50% of the ADI, or either, 0.35 mg SO 2 /kg bw/day, until 0.52 mg SO 2 /kg bw/dia) represented 4.5% of the searched sample and reached these levels of ingestion due to the consumption above 500 mL/day of of fruit industrialized juices, and, in privative school, for associating with its consumption alcoholic beverages, as beer and wine.