“河北省食品污染物监测体系”的建立,为分析河北省食品卫生状况提供了平台。在检测过程中,需要同时检测几十份样品。在基层,食品中亚硝酸测定方法为盐酸萘乙二胺法,在试验中用到500 m l容量瓶,由于其本身结构的特点,使得样品前处理中没有合适的容器对数份样品同时进行加热处理 The establishment of “Food Contamination Monitoring System in Hebei Province” provided a platform for analyzing the status of food hygiene in Hebei Province. In the testing process, need to test dozens of samples simultaneously. At the grassroots level, nitrite in food was determined by the Naphthalene Ethylenediamine Hydrochloride method. In the experiment, a 500 ml volumetric flask was used. Due to the structure of the sample itself, no suitable container in the sample preparation was used to heat several samples simultaneously deal with