Ocean Wise, Vancouver, British Columbia, Canada.
Ocean Wise, Vancouver, British Columbia, Canada.
Mar Pollut Bull. 2022 Dec;185(Pt A):114273. doi: 10.1016/j.marpolbul.2022.114273. Epub 2022 Oct 28.
Microplastics (MPs) were characterized in surficial marine sediment (n = 36) and mussel (n = 29) samples collected along the British Columbia (BC) coast, Canada, using visual identification and Fourier Transform Infrared Spectrometry. MPs counts averaged 32.6 ± 5.3 particles per kg in sediment and 0.38 ± 0.04 particles per individual mussel (0.24 ± 0.04 /g of tissue). Victoria Harbour and the North Coast (Prince Rupert area) were MP hotspots, likely resulting from a combination of local sources and oceanographic conditions. Microfibers <1000 μm dominated the pattern in both matrices (61.1 % in sediment; 65.4 % mussels) highlighting the suspected role of textiles in the widespread distribution of MPs in the marine environment. Overall, polyester was dominant in sediment and mussels (54.1 % and 63.5 %, respectively), followed by polyethylene (16.2 % and 11.5 %, respectively). This is the first report of MPs in sediment and mussels along the coast of BC using standardized methods.
采用目视鉴定和傅里叶变换红外光谱法，对加拿大不列颠哥伦比亚省（BC）沿岸采集的表层海洋沉积物（n=36）和贻贝（n=29）样本中的微塑料（MPs）进行了特征描述。沉积物中 MPs 的平均计数为 32.6±5.3 个/千克，贻贝个体中 MPs 的平均计数为 0.38±0.04 个/只（0.24±0.04/只组织）。维多利亚港和北海岸（鲁珀特王子港地区）是 MPs 的热点区域，这可能是由于当地来源和海洋条件的综合作用。两种基质中均以<1000μm 的微纤维为主（沉积物中占 61.1%；贻贝中占 65.4%），突出了纺织品在 MPs 在海洋环境中广泛分布中的可疑作用。总体而言，沉积物和贻贝中以聚酯为主（分别占 54.1%和 63.5%），其次是聚乙烯（分别占 16.2%和 11.5%）。这是使用标准化方法首次报道不列颠哥伦比亚省沿海沉积物和贻贝中的 MPs。
