Dietary Exposure to Antimony of Secondary School Students
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چکیده
This study estimated the dietary exposure to antimony of secondary school students in Hong Kong and assessed the associated health risks. Dietary exposure to antimony was estimated using the local food consumption data obtained from secondary school students in 2000 and the concentrations of antimony in food samples taken from the local market. Laboratory analysis for antimony was conducted by the Food Research Laboratory of the Centre for Food Safety. The dietary exposures to antimony for average and high consumers of the secondary school students were 0.036 and 0.081 μg/kg bw/day respectively. Both levels fell well below the safety reference value (i.e. the Tolerable Daily Intake (TDI)) of 6 μg/kg bw/day established by the World Health Organization and amount to less than 2% of this safety reference value. It could be concluded that both the average and high consumers of the secondary school students were unlikely to experience major toxicological effects of antimony. The results also showed that the food group “cereal and cereal products”, particularly rice, was the main dietary source of antimony. Because of the ubiquitous nature of antimony, low levels of antimony in foods might be unavoidable. Food trade is recommended to observe good agricultural and manufacturing practices to minimise antimony contaminations in food. Members of the public are advised to maintain a balanced diet so as to avoid excessive exposure from a small range of food items.
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