Abstract: In this paper,the effect of Chinese onion to remove nitrite was studied in a series of experiments.The properties and stability of Chinese onion solution were observed.The removal rate of by Chinese onion was determined,and its affecfing factors (i.e.reaction time,value of pH,the concentration of Chinese onion solution etc)were studied.The results indicate that the removal rate of nitrite by chinese onion was high,but the properties of Chinese onion solution were instable,and the removal rate was easily affected by various factors.

Key words: Chinese onion Nitrite Removal Rate