亚硝酸盐是致癌物亚硝胺类化合物的合成前体物之一,可通过饮水进入人体。我们对饮用水存放方式和存放条件进行实验,以探讨饮水中亚硝酸盐的变化规律。1 材料与方法 1.1饮用水存放方式 用塑料桶采末稍水,在20～22℃室温下以三种方式存放:(1)生水室温存放,取800mL水于1000mL三角瓶中存放;(2)开水室温存放,取800mL水于1000mL三角瓶中电炉煮沸2分钟存放;(3)开水保温瓶存放,取800ml水于三角瓶中电炉煮沸2分钟后灌入保温瓶中,软木塞塞紧存放。 1.2 存放温度 取同一末稍水分别在 Nitrite is one of the synthetic precursors of carcinogenic nitrosamines and can enter the human body through drinking water. We conducted experiments on the storage methods and storage conditions of drinking water to explore the changing rules of nitrite in drinking water. 1 Materials and methods 1.1 Storage method of drinking water Use plastic bucket mining slightly water, at room temperature 20 ~ 22 ℃ stored in three ways: (1) raw water stored at room temperature, take 800mL of water stored in 1000mL Erlenmeyer flask; (2 ) Boil water at room temperature, take 800mL water in 1000mL triangular flask electric furnace boil 2 minutes to store; (3) boiled water thermos bottle, take 800ml water in a triangular flask electric boil 2 minutes after pouring into the thermos flask cork stopper . 1.2 storage temperature to take the same end of the water in the water