新乡市蔬菜硝酸盐和亚硝酸盐污染状况分析

Investigation about nitrate and nitrite pollution in vegetables in Xinxiang

对新乡市市民春季常吃的3大类蔬菜取样调查,结果表明:新乡市蔬菜硝酸盐污染较严重,亚硝酸盐无超标现象.所选样品中硝酸盐含量基本趋势是:叶菜类(2347.01mg/kg)>根菜类(1679.81mg/kg)>果菜类(863.99mg/kg);亚硝酸盐含量总趋势是:叶菜类(2.418mg/kg)>根菜类(2.045mg/kg)>果菜类(1.887mg/kg).同时由于地区的不同硝酸盐和亚硝酸盐含量也有差别,硝酸盐含量:市场B的叶菜类硝酸盐含量最高,市场A的果菜类含量最低;亚硝酸盐含量:市场B的叶菜类含量最高,而根茎类含量却明显低于另外两个市场.

According to the nitrate and nitrite contents in 3 popular kinds of vegetables sampled in Xinxiang in spring,The result shows that the vegetables nitrate pollution is serious and the vegetables nitrite is non-exceeding the allowed figure phenomenon in Xinxiang ,the nitric acid salt content in the sample is that the green leaf vegetables （2347.01mg/kg）the root vegetables （1679.81mg/kg）the fruit vegetables （863.99 mg/kg）;Nitrous acid salt content is that the green leaf vegetables （2.045 mg/kg） 〉the root vegetables （2.418 mg/kg）〉 the fruit vegetables （1.887 mg/kg）.Simultaneously because the local different the nitrate and the nitrous acid salt content also have the difference,Nitric acid salt content： the market＇s B green leaf vegetables’ nitric acid salt content is highest and the market A fruit vegetables’ nitric acid salt content is lowest.Nitrous acid salt content： The market B green leaf vegetables’ nitrous content is highest,however the root vegetables’ nitrous content is lowest.