University of Victoria, Victoria, British Columbia V8W 2Y2, Canada.
Vancouver Island University, Nanaimo, British Columbia V9R 5S5, Canada.
Mar Pollut Bull. 2022 Aug;181:113886. doi: 10.1016/j.marpolbul.2022.113886. Epub 2022 Jul 8.
Anthropogenic particles (APs) generated from both natural and synthetic materials are widespread in the aquatic environment and contaminate seafood products, including shellfish. Depuration, involving the placement of filter-feeding shellfish in clean water for a period of time, often several days, is used to reduce contaminant concentrations, but the practicality of its use by the shellfish industry for APs has not yet been examined. In the present study, cultured adult Pacific oysters (Crassostrea gigas) were depurated for 10 days in a facility with limited airflow and filtered seawater. On average, there was a 73 % reduction in oyster AP concentration after 5 days, but no further reduction at 10 days, potentially due to the difficulty in depurating some particles or to re-contamination from the experimental environment. Long-term feasibility for industry will depend on future guidelines for safe AP consumption levels and the practicality and financial feasibility of creating and running clean facilities.
人为颗粒（APs）源自天然和合成材料，广泛存在于水生态环境中，并污染包括贝类在内的海鲜产品。净化，即让滤食性贝类在清洁水中放置一段时间，通常为数天，以降低污染物浓度，但贝类产业是否实际应用净化方法去除 APs 尚未得到检验。在本研究中，养殖成年太平洋牡蛎（Crassostrea gigas）在空气流通有限且经滤过海水的设施中净化 10 天。平均而言，经过 5 天净化后，牡蛎中 APs 的浓度降低了 73%，但在 10 天时没有进一步降低，这可能是因为某些颗粒难以被净化，或者是因为实验环境中的再污染。对于产业界来说，长期可行性将取决于未来的安全 APs 消费水平指南，以及创建和运行清洁设施的实用性和财务可行性。
