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首页> 外文期刊>Estuarine Coastal and Shelf Science >Varying levels of microplastics in benthic sediments within a shallow-coastal embayment
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Varying levels of microplastics in benthic sediments within a shallow-coastal embayment

机译：浅层沿海扶手中底栖沉积物中的微塑料水平变化

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摘要

Microplastics are pervasive items in the environment and it has been suggested that subtidal sediments are a potential sink and hotspot areas for these pollutants. Due to logistic limitations, this environmental compartment is not routinely sampled, which is evident in the limited number of studies conducted in subtidal zones, compared to intertidal zones and open waters. In order to fill part of the knowledge gap, this study aims to determine the abundance of micmplastics in subtidal sediments in a shallow coastal embayment. Sediment samples were collected using the Reineck box corer from the RV Celtic Voyager. Microplastics were extracted by density separation using sodium tungstate dihydrate (Na2WO4.2H(2)O)). Subsequently, a subsample of fibres were confirmed as having a synthetic origin by jt-FTIR spectroscopic analysis. A relatively low abundance of micro plastics was recorded, c. 73 MP/kg d.w. of sediment, with a variable range across and within stations e.g. 0.3-15.4/100 g d.w. All identified micmplastics were secondary (i.e. fibres (99%), fragments (1%)), with the majority identified as polystyrene, polyester, and polyethylene terephthalate. The data in this study illustrates the need for replicates and monitoring marine sediments for micmplastics.
机译：微塑料是环境中的普遍存在的物品，并提出了对沉积物是这些污染物的潜在水槽和热点区域。由于物流局限性，与透透区和开放水域相比，该环境隔间不常规采样，这在对阴性区的有限研究中是显而易见的。为了填补一部分知识差距，本研究旨在确定浅沿海升降机中的阴影沉积物中的麦克风覆盖物的丰富。使用RV Celtic Voyager的Ropeck Box Corer收集沉积物样品。使用钨酸钠二水合物（Na 2 O 4 2 H（2）O）通过密度分离提取微薄塑料。随后，通过JT-FTIR光谱分析确认纤维的纤维的子样本具有合成来源。记录了相对较低的微塑料，C。 73 MP / kg D.W.沉积物，具有可变范围的跨越，而不是在车站内。 0.3-15.4 / 100克D.W.所有鉴定的麦克风均为仲（即纤维（99％），片段（1％）），其中大多数鉴定为聚苯乙烯，聚酯和对苯二甲酸乙二醇酯。本研究中的数据说明了对Micmplastics的复制和监测海洋沉积物的需求。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2020年第30期|106915.1-106915.8|共8页
  • 作者

    Pagter Elena; Frias Joao; Kavanagh Fiona; Nash Roisin;

  • 作者单位

    Galway Mayo Inst Technol GMIT Marine & Freshwater Res Ctr MFRC Old Dublin Rd Galway H91 T8NW Ireland;

    Galway Mayo Inst Technol GMIT Marine & Freshwater Res Ctr MFRC Old Dublin Rd Galway H91 T8NW Ireland;

    Galway Mayo Inst Technol GMIT Marine & Freshwater Res Ctr MFRC Old Dublin Rd Galway H91 T8NW Ireland;

    Galway Mayo Inst Technol GMIT Marine & Freshwater Res Ctr MFRC Old Dublin Rd Galway H91 T8NW Ireland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Subtidal sediments; Plastic marine litter; FTIR; MSFD; Pollution;

    机译：沉积物;塑料海洋垃圾;FTIR;MSFD;污染;

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