大连地区虾夷贝、赤贝中重金属元素含量变化研究

Study on the variation of heavy metal elements content in Mizuhopecten yessoensis and Anadara broughtonii in the Dalian Region

中文关键词:  虾夷贝  赤贝  重金属含量  健康风险

英文关键词:Mizuhopecten yessoensis  Anadara broughtonii  heavy metal content  health risk assessment

中文摘要:

      目的 研究大连地区虾夷贝、赤贝中重金属元素含量变化。方法 通过选取大连地区虾夷贝、赤贝样品, 在一年内按月收集样本, 采用电感耦合等离子体质谱法测定不同月份贝类样品中Pb、Cd、Cr、Cu重金属元素的含量, 考察两种贝类对上述元素的富集随月份变化的趋势。运用单因子污染指数法及目标危害系数法, 评价食用富集一定含量重金属贝类产品的食用风险及对人体健康的潜在风险。结果 虾夷贝中重金属Cd的含量在3月达到最高峰, 最高检测值达到4.50 mg/kg, 已超过国家食品安全标准限量; 重金属Cu在3月、4月、10月均较为明显高于其他月份, 但全年检测数值均低于限量指标。赤贝体内重金属Cd的含量3月、4月为最高峰, 最高检测值为1.92 mg/kg, 其余月份未检明显变化规律, 但全年检测数值均低于限量指标。其余重金属元素的含量随时间、季节的变化未见明显变化规律。结论 虾夷贝中重金属的含量随月份的变化最为明显, 对于重金属Cd, 虾夷贝在3月、4月、5月虾夷贝处在污染中, 食用存在健康风险; 赤贝全年均处在食用安全数值之内, 存在的健康风险较低。

英文摘要:

      Objective To investigate the variation in heavy metal elements content in Mizuhopecten yessoensis and Anadara broughtonii from the Dalian Region. Methods Samples of Mizuhopecten yessoensis and Anadara broughtonii were collected monthly over the course of a year in Dalian. The content of heavy metal elements, including Pb, Cd, Cr, and Cu, were determined using inductively coupled plasma mass spectrometry. The study examined the monthly trends in the accumulation of these elements in the 2 types of shellfish. The single-factor pollution index method and the target hazard quotient method were used to evaluate the consumption risk and potential health risks to humans from consuming shellfish products with accumulated heavy metals. Results The Cd content in Mizuhopecten yessoensis peaked in March, with the highest detected value reaching 4.50 mg/kg, exceeding the national food safety standard limit. The Cu content in Mizuhopecten yessoensi was significantly higher in March, April, and October compared to other months, but all annual detection values were below the limit. In Anadara broughtonii, the Cd content peaked in March and April, with the highest detected value being 1.92 mg/kg, but no significant variation pattern was observed in other months, and all annual detection values were below the limit. The content of other heavy metal elements did not show significant variation patterns over time or seasons. Conclusion The heavy metal content in Mizuhopecten yessoensis shows the most significant monthly variation. For Cd, Mizuhopecten yessoensis are contaminated in March, April, and May, posing health risks if consumed. Anadara broughtonii remaines within safe consumption levels throughout the year, with lower health risks.