Typical Heavy Metals Accumulation in Main Seafood of Sanmen Bay,the East China Sea
The purpose of this study was to investigate the accumulation of heavy metals in major cultured seafood in Sanmen Bay,the East China Sea and assess the associated health risks for local coastal residents due to seafood consumption.A total of 76 samples covering 10 different seafood species were collected from aquaculture farms in Sanmen Bay from October to December 2022 and analyzed for typical heavy metal contents of total arsenic,inor-ganic arsenic,total cadmium,total lead,and total mercury.The single pollution index was used to evaluate the con-tamination of these 10 seafood species by heavy metals and the health risks associated with long-term consumption of seafood by local coastal residents were assessed using the target hazard quotient and the total target hazard quo-tient.Moreover,the speciation of inorganic arsenic in seafood were discussed.The results of this study revealed that only a few samples of Oratosquilla oratoria and Portunus trituberculatus exceeded the limit value(3.0 mg· kg-1)for cadmium content.The inorganic arsenic,lead,and mercury contents were lower than the limit values,and significant differences were observed in the accumulation of heavy metals by different types of seafood.The health risks associated with heavy metal consumption from long-term intake of these 10 seafood species by local coastal residents were found to be of low concern.The inorganic arsenic content in each seafood sample was less than 5％of the total arsenic content and demonstrated a weak correlation with the total arsenic content.This study provides a scientific foundation for comprehending the heavy metal pollution status of cultured seafood in Sanmen Bay and assessing the exposure risks associated with heavy metals in seafood for local coastal residents.Additionally,it of-fers fundamental insights into the inorganic arsenic forms in seafood,contributing to the possible revision of heavy metals limit values in future regulations.
typical heavy metalsseafoodhealth risksinorganic arsenic formspollution indexhazard quotientSanmen Bay
NETL
NSTL
万方数据
