酶消化法在废水排放区揭示贻贝中的微塑料。
Application of an enzyme digestion method reveals microlitter in Mytilus trossulus at a wastewater discharge area.
机构信息
Department of Environmental Sciences, University of Helsinki, P.O. Box 65, FI-00014 University of Helsinki, Finland; Marine Research Centre, Finnish Environment Institute, P. O. Box 140, FI-00251 Helsinki, Finland.
Department of Built Environment, Aalto University, PO Box 15200, FI-00076, Aalto, Finland; Marine Research Centre, Finnish Environment Institute, P. O. Box 140, FI-00251 Helsinki, Finland.
出版信息
Mar Pollut Bull. 2018 May;130:206-214. doi: 10.1016/j.marpolbul.2018.03.022. Epub 2018 Mar 23.
The ingestion of microlitter by blue mussels (450) was studied at a wastewater recipient area in the Baltic Sea. The mussel soft tissues were digested using enzymatic detergents and the detected litter particles characterized with FT-IR imaging spectroscopy. Microlitter concentration in seawater and WWTP effluent were also measured. Microlitter was found in 66% of the mussels. Mussels from the WWTP recipient had higher microlitter content compared to those collected at the reference site. Plastics made up 8% of all the analysed microlitter particles. The dominating litter types were fibres (~90% of all microlitter), 42% of which were cotton, 17% linen, 17% viscose and 4% polyester. The risk of airborne contamination during laboratory work was lowered when mussels were digested with their shells on instead of dissecting them first. The approach was found applicable and gentle to both non-synthetic and synthetic materials including fragile fibres.
研究了在波罗的海的一个废水接收区，蓝贻贝（450）对微塑料的摄入情况。利用酶洗涤剂消化贻贝软组织，并采用傅里叶变换红外成像光谱法对检测到的微粒进行特征描述。还测量了海水中和 WWTP 废水中的微塑料浓度。在 66%的贻贝中发现了微塑料。与参考地点采集的贻贝相比，来自 WWTP 接收点的贻贝含有更高的微塑料含量。塑料占所有分析的微塑料颗粒的 8%。主要的垃圾类型是纤维（占所有微塑料的 90%），其中 42%是棉花，17%是亚麻，17%是粘胶纤维，4%是聚酯纤维。当贻贝带壳而不是先解剖进行消化时，可降低实验室工作过程中空气传播污染的风险。该方法被发现适用于包括易碎纤维在内的非合成和合成材料，而且温和。
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