Analysis of nitrite content of unpacked salted vegetables marketed in Xinxiang city

Objective To determine the nitrite content of unpacked salted vegetables marketed in Xinxiang City.Methods 206 unpacked salted vegetables were collected in Xinxiang City,the nitrite content of which was determined by N-(1-naphthyl)-ethylenediamine dihydrochloride spectrophotometric method.Results The result showed that qualified rate of nitrite content of unpacked salted vegetables marketed in Xinxiang city was 99.03%(204/206).Conclusion The nitrite content of unpacked salted vegetables in Xinxiang City was basic qualification.