Method for detecting various harmful substances in fast food packaging paper bags

• Main Authors: QU FANG, MA JIE, CHI JIAN, WU JIMEI, LIU LINLIN
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2017
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for detecting various harmful substances in fast food packaging paper bags. The method specifically includes following steps: step 1, cutting up a paper bag to be detected to obtain paper scraps; step 2, soaking the paper scraps obtained in the step 1 in soaking liquid for 0.5-1.5h, and leaching and extracting extract; step 3, evaporating and concentrating the extract obtained in the step 2, and using an organic filtering membrane to filter the concentrated extract; step 4, testing the extract obtained after being filtered in the step 3 through a gas chromatography-mass spectrometer, and determining harmful substances in the paper bag according to a testing result. Compared with conventional unitary detection methods, the method is simple, convenient, quick, economically feasible and suitable for simultaneous and qualitative detection of different harmful substances in film fast food paper bags. 本发明种快餐食品包装纸袋中多种有害物质的检测方法，具体包括如下步骤：步骤1，将待测纸袋切碎，得碎纸屑；步骤2，将步骤1所得的碎纸屑在浸泡液中进行浸泡，浸泡0.5h～