Actuality of nitrate pollution in vegetables and the evaluation of its edible security
The nitrate content of 70 samples of 9 main vegetables in Zhenjiang was investigated. The results showed that the nitrate content of root, caudex and leaf vegetables was seriously over the standard, such as Chinese cabbage, garland chrysanthemum, celery, radish, water spinach and three-colored amaranth. Lettuces were polluted intermediately, and the nitrate content of romaine lettuces and potatoes was lower. The edible security of vegetables were evaluated and countermeasures controlling nitrate pollution in vegetables were proposed also.