Objective To evaluate the level and health risks of rare earth elements in market-sold foods in Shanghai residents.
Methods Food samples, including rice, meat, aquatic products, vegetables, eggs, tea, were collected in wholesale markets, supermarkets, and pedlars' markets by stratified random sampling method, and were detected by inductively coupled plasma mass spectrometry for the determination of rare earth element level. Combined with food consumption data, probability assessment was applied to evaluate the exposure level of rare earth elements in residents.
Results The positive rates of rare earth elements in food samples ranged from 60.0% to 100.0%, and the levels were 30.0-1 050.0 μg/kg. By probability assessment method, the mean and P95 dietary intake of rare earth elements were 108.73 μg/d and 245.00 μg/d, accounting for 1.93% and 4.82% of acceptable daily intake (ADI, 4 200 μg/d), respectively.
Conclusion The intake of rare earth elements through various foods is within a safe level for Shanghai residents.
DownLoad: