农村中几乎家家都备有水缸,很多人却没有经常刷洗水缸的习惯。水含有微量的硝酸盐,如短期存放,饮用则无妨。若存放时间长,受到了污染,水中的硝酸盐就会变成亚硝酸盐。人体饮用了含亚硝酸盐的水,就会与体内的有机质相互作用,对人体健康 Almost every family in rural areas are equipped with water tanks, many people do not often brush the habit of water tanks. Water contains traces of nitrate, such as short-term storage, drinking anyway. If stored for a long time and contaminated, nitrates in the water will turn into nitrites. Human body drinking water containing nitrite, it will interact with the body’s organic matter, human health