Analysis on the nitrate and nitrite levels in pickles from Chengdu City

OBJECTIVE To assess the nitrate and nitrite level in the pickles sold in Chengdu city and to provide scientific basis for future relevant studies.METHODS A total of 190 pieces of pickle were collected by the random sampling method.The nitrate contents were determined by spectrophotometric method,and the contents of nitrite were assessed by ion chromatography.RESULTS The average content of nitrate was(2.33 ± 4.59)g/kg,the nitrite was(2.22 ± 2.59)mg/kg.There were differences in the content of nitrate between pickles from different places and the different packages.CONCLUSION The contents of nitrite in pickles in Chengdu are lower than the national standard,while the content of nitrate is relative higher.