| nitrate and nitrite content in organically cultivated vegetables. | the nitrate and nitrite content of leaf vegetables (swiss chard, sea beet, spinach and cabbage), "inflorescence" vegetables (cauliflower) and fruit vegetables (eggplant and vegetable marrow) grown with organic fertilizers have been determined by a modified cadmium–griess method. samples were purchased from organic food stores as well as collected directly from an organic farm in madrid (spain). nitrate levels were much higher in the leaf vegetables (especially swiss chard species; average over t ... | 2010 | 24785312 |