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首页> 美国卫生研究院文献>Environmental Health Perspectives >Chemical risks associated with consumption of shellfish harvested on the north shore of the St. Lawrence Rivers lower estuary.
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Chemical risks associated with consumption of shellfish harvested on the north shore of the St. Lawrence Rivers lower estuary.

机译：与食用圣劳伦斯河下游河口北岸收获的贝类有关的化学风险。

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摘要

Shellfish have the capacity to accumulate chemical contaminants found in their biotope and therefore present a potential risk for consumers. This study was conducted to assess the chemical risks associated with consumption of shellfish harvested on the north shore of the St. Lawrence River's lower estuary. A survey was carried out on 162 recreational harvesters, and shellfish were sampled for chemical contaminant analysis. We quantified 10 metals, 22 polycyclic aromatic hydrocarbons (PAHs), 14 polychlorinated biphenyls (PCBs), and 10 chlorinated pesticides. We subsequently evaluated cancer and noncancer risks for four consumption scenarios based on our survey results and published results. Soft-shell clams (Mya arenaria) were by far the most consumed shellfish species. Of the 56 selected contaminants, 36 were detected in the 23 homogenates of soft-shell clam meat. None of the contaminants found in the soft-shell clams were associated with intakes that exceed the main exposure limit recommendations proposed to prevent noncancer effects. However, several limits must be considered before drawing conclusions about the relative safety of shellfish consumption regarding this end point. Furthermore, inorganic arsenic and PCBs were present in sufficient concentrations to lead to cancer risks exceeding the level often considered acceptable for environmental exposure (1 x 10 (-4) to 1 x 10(-6)) in each of the four scenarios, even for the lowest observed scenario of 15 meals of soft-shell clams per year.
机译：贝类具有积聚在其生物群落中发现的化学污染物的能力，因此对消费者构成潜在风险。进行这项研究是为了评估与食用圣劳伦斯河下游河口北岸收获的贝类有关的化学风险。对162个休闲收割机进行了调查，并对贝类进行了采样以进行化学污染物分析。我们定量了10种金属，22种多环芳烃（PAH），14种多氯联苯（PCB）和10种氯化农药。随后，我们根据调查结果和发布的结果评估了四种食用场景下的癌症和非癌症风险。软体蛤（Mya arenaria）是迄今为止消耗最多的贝类。在选择的56种污染物中，在软壳蛤肉的23种匀浆中检测到36种。软壳蛤中没有发现污染物与摄入量超过建议的主要暴露极限的建议有关，以防止非癌效应。但是，在得出有关此终点贝类食用相对安全性的结论之前，必须考虑几个限制。此外，无机砷和多氯联苯以足够的浓度存在，导致癌症风险超过通常认为在四种情况下对环境暴露可接受的水平（1 x 10（-4）至1 x 10（-6）），甚至观察到的最低情景是每年15顿软壳蛤。

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