Objective To understand the pollution level of dietary lead (Pb) in retail aquatic animal products in Jinshan District of Shanghai and to evaluate the risk of lead exposure by consuming retail aquatic animal products in local residents.
Methods A total of 151 commercially available aquatic animal product samples were collected by stratified random sampling method, and lead content was detected. The World Health Organization (WHO) recommended point estimates of dietary exposure to chemicals was applied, in combination of residents' seafood intake survey, to assess the risk of lead exposure by consuming retail aquatic animal products in the residents in Jinshan District of Shanghai.
Results The average lead level in sampled retail aquatic animal products in Jinshan District of Shanghai was 0.194 1 mg/kg, the 95th percentile was 0.5488mg/kg, and the unqualified rate were 5.30%. The average lead exposure level through intake of aquatic animal products in pregnant women was estimated to be 0.185 8 μg/(kg×d) (in terms of body weight), followed by children aged 3 to 5 years0.176 7μg/(kg×d) and breastfeeding mothers0.109 8μg/(kg×d). Among the highest lead intake groups (with aquatic animal products consumption higher than the upper 95th percentile), the exposure level was highest in children aged 3 to 5 years0.853 9 μg/(kg×d), followed by pregnant woman0.598 3μg/(kg×d) and breastfeeding mothers0.329 4μg/(kg×d).
Conclusion The lead intake from retail aquatic animal products is safe for pregnant women and breastfeeding mothers in Jinshan District of Shanghai. However, excessive lead exposure may exist in children with high consumption of aquatic animal products.
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