亚硝酸盐是一种有毒物质,文献报道长期或大量食用可使人引起高铁血红蛋白症(或称青紫病)、中毒以致死亡。随着科学的发展,亚硝酸盐的用途和来源越来越广。近几年来,发现不少饮用水源水质,亚硝酸盐含量在0.03mg/升以上。市场上出售的有些菜类腌制品和肉类腌制品,如咸 Nitrite is a toxic substance reported in the literature long-term or large-scale consumption can cause methemoglobinemia (or bruising), poisoning and death. With the development of science, the purpose and source of nitrite are more and more widely. In recent years, many sources of drinking water quality, nitrite content of 0.03mg / liter or more. Some vegetables on the market are marinated and salted, like salty