Low levels of microplastics (MP) in wild mussels indicate that MP ingestion by humans is minimal compared to exposure via household fibres fallout during a meal
Low levels of microplastics (MP) in wild mussels indicate that MP ingestion by humans is minimal compared to exposure via household fibres fallout during a meal
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DOI：
10.1016/j.envpol.2018.02.069
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发表时间：
2018-06-01
影响因子：
8.9
通讯作者：
Henry, Theodore B.
中科院分区：
文献类型：
--
作者：
Catarino, Ana I.;Macchia, Valeria;Henry, Theodore B.
微塑料（MP）是海洋环境中报告数量最多的碎片，评估在野生生物中积累的MP数量对于风险评估是必要的。我们的目标是评估MP污染的贻贝收集在苏格兰（英国）海岸周围，以确定MP的特点，并评估人类暴露于MP通过摄入贻贝的风险。我们部署笼贻贝（贻贝）在城市化的河口（爱丁堡，英国），以评估塑料污染的季节性变化，并收集贻贝（贻贝属和潮下Modiolus modiolus）从苏格兰周围的8个采样站列举MP类型在不同的位置。我们确定了人类在进餐过程中接触家庭灰尘纤维的可能性，以与可食用贻贝中存在的MP量进行比较。M中MP的平均数。蜗轴为0.086 ± 0.031（SE，n = 6）/g湿重（35 ± 1.29（SE）/贻贝）。在贻贝属中，MP/g湿重的平均数为3.0 +/- 0.9（SE，n = 36）（每个贻贝3.2 +/- 0.52（SE）），但依赖于体重。塑料纤维识别的视觉准确性估计为48%和50%之间，分别使用尼罗红染色和FT-IR方法，减半观察到的野生贻贝中的MP量。我们观察到的异速生长关系的MP的数量和贻贝湿重。我们预测，在英国，人类通过食用贻贝摄入的MP为123 MP颗粒/y/人，在贝类消费量较高的国家，可高达4620颗粒/y/人。相比之下，通过食用贻贝摄入塑料的风险与家庭膳食中通过灰尘沉降物接触纤维相比（13，731 - 68，415颗粒/年/人）。皇冠版权所有（C）2018由爱思唯尔有限公司发布。保留所有权利。
Microplastics (MPs) are the most numerous debris reported in marine environments and assessment of the amounts of MPs that accumulate in wild organisms is necessary for risk assessment. Our objective was to assess MP contamination in mussels collected around the coast of Scotland (UK) to identify characteristics of MPs and to evaluate risk of human exposure to MPs via ingestion of mussels. We deployed caged mussels (Mytilus edulis) in an urbanised estuary (Edinburgh, UK) to assess seasonal changes in plastic pollution, and collected mussels (Mytilus spp and subtidal Modiolus modiolus) from eight sampling stations around Scotland to enumerate MP types at different locations. We determined the potential exposure of humans to household dust fibres during a meal to compare with amounts of MPs present in edible mussels. The mean number of MPs in M. modiolus was 0.086 +/- 0.031 (SE, n = 6)/g ww (35 +/- 1.29 (SE) per mussel). In Mytilus spp, the mean number of MPs/g ww was 3.0 +/- 0.9 (SE, n = 36) (3.2 +/- 0.52 (SE) per mussel), but weight dependent. The visual accuracy of plastic fibres identification was estimated to be between 48 and 50%, using Nile Red staining and FT-IR methodologies, respectively, halving the observed amounts of MPs in wild mussels. We observed an allometric relationship between the number of MPs and the mussels wet weight. Our predictions of MPs ingestion by humans via consumption of mussels is 123 MP particles/y/capita in the UK and can go up to 4620 particles/y/capita in countries with a higher shellfish consumption. By comparison, the risk of plastic ingestion via mussel consumption is minimal when compared to fibre exposure during a meal via dust fallout in a household (13,731-68,415 particles/Y/capita). Crown Copyright (C) 2018 Published by Elsevier Ltd. All rights reserved.