RESUMO
To determining of sodium nitrite in susage and compasion with amount of standard and change of nitrite in the course of time. For sampling, took action in thirty different time production [P<0.05] from every one of eleven factory products that enter meat products to Semnan Province and samples transferred to laboratory. For determining of nitrite was used from standard number 923 that has been given by Iran standard office. After the determining of nitrite concentration in samples was taken action respect estimation of confidence space mean with P<0.05 in total samples and was analyzed meanings with amount of standard. In examination of nitrite in products gave in susags A 54.5 and 55.16, in B 33 and 26.33, in C 7.9 and 7.73, in D 32.1 and 31.33, in E 23.47 and 19.23, in F 54.9 and 48.77 and in C [Tehran] 36.17 and 25.7, in H 19.3 and 13.57, in L 20.43 and 22.9, in K 39.8 and 34, in M 36.6 and 14.63 milligram in kilogram that amounts of theirs with P < 0.05 had very meaning different with amount of standard. In examination A products for determining of time effect amount of nitrite gave in first, seventh, tenth, fourteenth day in manner 50, 43, 42, 39 and in F products in first, seventh, fourteenth in manner 52, 51, 42 milligram in kilogram. In products of A, D, F, B, E, G, C, H, K, L, M, amount of nitrite was lower than standard and was not problem in this products. Also with examination one sample of products two factories in different times was distinguished that amount of nitrite decreases in meat products in the course of time