|
Abstract In order to investigate the heavy metal contamination status of Sagittaria sagittifolia at main producing areas in China，timely find out quality and safety hazards，and scientifically prevent and control heavy metals risk in aquatic vegetables，this study from 2019 to 2021 continuously collected batch 175 samples from major production bases of Sagittaria sagittarius in Hubei，Jiangsu，Zhejiang Provinces and Guangxi Zhuang Autonomous Regio；monitored the contents of 7 kinds heavy metals；and conducted dietary exposure risk assessment by index of food safety（IFS）method．The results showed that the overall pass rate of heavy metals in Sagittaria sagittata samples was 98.3%．The detection rates of Cu，As and Cd all were 100.0%. The detection rates of Cr，Pb，Ni and Hg were 78.8%，69.7%，36.6% and 20.0%，respectively．Among them，the exceeding standard rates of As and Cd were 1.1% and 0.6%，respectively．Two batches of As over-standard samples and one batch of Cd over-standard sample were from Jiangsu Province，Hubei Province and Guangxi Zhuang Autonomous Region，respectively．Judging from the safety index evaluation results，both IFS and IFS of 7 kinds heavy metals in Sagittaria sagittata were far less than 1，indicating that the overall exposure risk was within the acceptable range.
|
|
Received: 09 January 2023
|
|
|
|
