The aim of this study was to evaluate the health risk of Cd, Cu, Pb, As, and Hg exposure through consumption of cultured oyster Crassostrea gigas from Sonoran coast. Metals were analyzed by atomic absorption spectrometry, and the risk assessment was estimated according to the hazard quotient (HQ), carcinogenic risk (CR), and hazard index (HI). The mean levels of Cd, Cu, Pb, As, and Hg in oysters were 1.35, 7.69, 0.29, 0.07, and 0.04 mg/kg wet weight, respectively. Results indicate that except for Cd, all mean levels were below than those recommended by the Mexican government, FAO, and European Union. The metal levels were similar to those reported on the Pacific Northwest Coasts. For risk assessment, the HQ, CR, and HI values did not exceed safety levels. Therefore, the oysters cultivated in the studied areas are safe for human consumption.

中文翻译：

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加利福尼亚湾养殖的牡蛎牡蛎中的金属含量及其对人体健康的风险评估

这项研究的目的是通过食用牡蛎Crassostrea gigas来评估Cd，Cu，Pb，As和Hg暴露的健康风险。从索诺兰海岸。通过原子吸收光谱法分析金属，并根据危险系数（HQ），致癌风险（CR）和危险指数（HI）估算风险评估。牡蛎中Cd，Cu，Pb，As和Hg的平均含量分别为1.35、7.69、0.29、0.07和0.04 mg / kg湿重。结果表明，除镉外，所有平均水平均低于墨西哥政府，粮农组织和欧盟的建议水平。金属含量与太平洋西北海岸报道的相似。为了进行风险评估，HQ，CR和HI值未超过安全级别。因此，在研究区域养殖的牡蛎对人类食用是安全的。