The content variation of nitrite in 8 vegetables(before and after immersed in water for 1 hour) stored at 20~25 ℃ and 4 ℃ were studied.The results indicated that the maximum content of nitrite was appeared in 1 or 2 days stored at 20~25 ℃ and followed by a dropping trend.Then the nitrite content increased with the time prolonged.The nitrite content of the vegetables at 20~25 ℃ were higher than that at 4 ℃.In all the storage temperature,the nitrite content of the vegetables immersed in water for 1 hour were ...