Nitrate has no toxicity itself and is very stable at a low concentration.It is very easy to reduce into nitrite which hinders the function of blood carrying oxygen.

• 摘要:硝酸盐本身不具毒性，低浓度时有高度的稳定性，在人体中易还原成亚硝酸盐而阻碍血液载氧的功能，严重者会有死亡的危险。