Monitoring and analysis of metal elements in food in Jiangshan City,2016-2022
Objective This study aims to detect the levels of six metal pollutants including lead,cadmium,chromium,arse-nic,mercury,and aluminum in the commercially available food in Jiangshan City,analyze their pollution levels,distribution characteristics,and possible pollution sources,and conduct descriptive analysis and evaluation,so as to provide basis for effec-tive food supervision.Methods According to the requirements of the implementation plan for food pollution and harmful factor risk monitoring in Zhejiang Province,649 samples of various foods in Jiangshan City from 2016 to 2022 were collected and tested using the national hygiene standards and methods in the food safety risk monitoring manual.The test results were compared and analyzed with the national food hygiene standard limits.Results A total of 649 food samples were tested from 2016 to 2022,with a qualification rate of 92.45%and there is statistical significance on the difference in food qualification rate over the seven years(P<0.05).Aluminum additives in jellyfish were seriously excessive(41.7%)and contributed to a moderate pollution risk(Pi=1.03).The excessive rate of aluminum additives in oil sticks and fried dough strips was high(28.4%),indicating a severe pollution risk(Pi=1.03).The cadmium element in sea fish(Pi=0.667)contributed to a moderate pollution risk,while the cadmium element in rice(Pi=0.425)and dried fish and shrimp skins(Pi=0.292)contributed to a mild pollution risk.The mercury element in rice(Pi=0.297),fresh vegetables(Pi=0.257),berry fruit(Pi=0.250),and rice cakes and popcorn(Pi=0.225)contributed to a mild pollution risk.Conclusion Food safety risks exist in Jiangshan City,and the problem of excessive aluminum additives is prominent.It is necessary to guide the public to develop good eating habits and strengthen hygiene supervision to eliminate food safety hazards.
Food risk monitoringSingle factor index methodRisk assessment