摘要

迄今为止，没有用于采样微塑料的金标准。浮游动物采样方法，如浮游生物和Neuston网，通常用于估算海水中微塑料的浓度，但它们检测微塑料的能力受其网眼尺寸的限制。我们将不同的网状采样方法与不同的网格尺寸进行了比较，包括bongo网（>500μm），manta网（>300μm）和浮游生物网（>200μm和>400μm）到1升瓶子，过滤（0.45μm） ）样品。使用基于网络的方法估计的微塑料浓度比通过1升吸收样品估计的微塑料浓度低约3个数量级。世界上人口较少的一些地区，如阿森松岛和福克兰群岛，缺乏关于微塑料的基线数据。使用瓶子采样方法，我们发现在这些偏远地区存在微弹性垫料，并且与人口较多的沿海地区（如英国）的污染水平相当。

To date there is no gold standard for sampling microplastics. Zooplankton sampling methods, such as plankton and Neuston nets, are commonly used to estimate the concentrations of microplastics in seawater, but their ability to detect microplastics is limited by their mesh size. We compared different net-based sampling methods with different mesh sizes including bongo nets (>500 μm), manta nets (>300 μm) and plankton nets (>200 μm and >400 μm) to 1 litre bottle grabbed, filtered (0.45 μm) samples. Concentrations of microplastics estimated using net-based methods were ~3 orders of magnitude less than those estimated by 1 litre grab samples. Some parts of the world with low human populations, such as Ascension Island and the Falkland Islands, lack baseline data on microplastics. Using the bottle grab sampling method we found that microplastic litter was present at these remote locations and was comparable to levels of contamination in more populated coastal regions, such as the United Kingdom.

https://www.ncbi.nlm.nih.gov/pubmed/30503486