蔬菜是易于富集硝酸盐的作物之一。White指出,人体摄取的硝酸盐81.2％来自蔬菜。Tremp认为,人体约有70％的硝酸盐是从蔬菜中摄取的。尽管硝酸盐本身对人体不具毒害性或毒害性较低,但它一旦被还原成亚硝酸盐之后,就有了潜在危险性。一方面亚硝酸盐易引起高铁血红蛋白症;另一方面它在适合的pH环境中,若有仲胺存在,就有可能发生 Vegetables are one of the most easily nitrate-enriched crops. White pointed out that 81.2% of the nitrate ingested by the human body comes from vegetables. Tremp believes that about 70% of the body’s nitrate is taken from vegetables. Although nitrate itself is not toxic or toxic to humans, it is potentially dangerous once it is reduced to nitrite. Nitrite, on the one hand, can easily cause methemoglobinemia; on the other hand, it is possible for a secondary amine to exist in a suitable pH environment