微塑料
萃取(化学)
消化(炼金术)
环境化学
贻贝
化学
色谱法
污染
制浆造纸工业
聚氯乙烯
环境科学
渔业
生物
生态学
工程类
有机化学
作者
Xiaofeng Wu,Xiaoping Song,Zhengdong Zhang
出处
期刊:Chemosphere
[Elsevier]
日期:2022-02-01
卷期号:289: 133187-133187
被引量:6
标识
DOI:10.1016/j.chemosphere.2021.133187
摘要
Mussels are often used as biological indicators for monitoring marine microplastic pollution. The crucial procedure during monitoring is the separation of microplastics from mussel samples. We investigated the separation efficiencies of six combinations of two digestion solutions (10% KOH and 30% H2O2) and three extraction solutions (NaCl, oil in H2O, and oil in NaCl) for mussels with low- and high-density microplastics. After KOH digestion, no polyethylene terephthalate (PET) could be extracted using the three extraction solutions, which might be due to the degradation of PET. After H2O2 digestion, the total extraction recovery rates of polypropylene, polyvinyl chloride, and PET for oil in H2O and oil in NaCl solution ranged from 95.6% ± 5.09%-100%, which were higher than those of the saturated NaCl solution (51.1% ± 17.1%-67.8% ± 13.9%). The first extraction recovery rates of oil in NaCl solution for PP, PET, and PVC were higher than those of oil in H2O. In this study, extraction by oil in NaCl solution after 30% H2O2 digestion was suggested to separate microplastics from mussels. This method is conducive to promoting the standardization of microplastic monitoring in mussels and might be suitable for large-scale monitoring of marine microplastic pollution.
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