Cadmium exposure assessment based on food survey data in an urban area of Beijing and Chongli area of Zhangjiakou

ObjectiveTo provide a reference for food safety risk assessment and safety assurance for the Winter Olympics and Beijing residents， the exposure level and possible health risks of cadmium （Cd） in main foods in the surrounding areas of the 2022 Beijing Winter Olympics were evaluated. MethodsBased on the hazard assessment and limit standard analysis of cadmium， the point assessment method was used to assess the dietary exposure risk of cadmium. The 2019 to 2020 on-site sampling survey data of an urban area of Beijing and Zhangjiakou Chongli area and the 2018 Beijing main food consumption survey data were used in this pre-assessment. ResultsThe cadmium provisional tolerated monthly intake （PTMI） established by joint FAO/WHO Expert Committee on Food Additives （JECFA） was 25 μg/kg·BW. The overall average content of cadmium in various foods was 0.010 6 mg/kg， and the overall rate of exceeding the standard was 0.47%. The average exposure of Beijing residents to cadmium through the main food was 5.92 µg/（kg·BW·m）， ac