Finnish Environment Institute, Marine Research Centre, P.O. Box 140, 00251 Helsinki, Finland.
Finnish Environment Institute, Marine Research Centre, P.O. Box 140, 00251 Helsinki, Finland.
Mar Pollut Bull. 2018 Feb;127:586-592. doi: 10.1016/j.marpolbul.2017.12.054. Epub 2017 Dec 28.
Although the presence of microplastics in marine biota has been widely recorded, extraction methods, method validation and approaches to monitoring are not standardized. In this study a method for microplastic extraction from fish guts based on a chemical alkaline digestion is presented. The average particle retrieval rate from spiked fish guts, used for method validation, was 84%. The weight and shape of the test particles (PET, PC, HD-PE) were also analysed with no noticeable changes in any particle shapes and only minor weight change in PET (2.63%). Microplastics were found in 1.8% of herrings (n=164) and in 0.9% of sprat (n=154). None of the three-spined sticklebacks (n=355) contained microplastic particles.
尽管海洋生物体内存在微塑料已被广泛记录，但提取方法、方法验证和监测方法并未标准化。在这项研究中，提出了一种基于化学碱性消化的从鱼肠中提取微塑料的方法。用于方法验证的加标鱼肠的平均颗粒回收率为 84%。测试颗粒（PET、PC、HD-PE）的重量和形状也进行了分析，没有发现任何颗粒形状的明显变化，只有 PET 的重量略有变化（2.63%）。在 1.8%的鲱鱼（n=164）和 0.9%的鲱鱼（n=154）中发现了微塑料。三种棘鱼（n=355）中均未发现微塑料颗粒。
