Proposal for an initial screening method for identifying microplastics in marine sediments.
Proposal for an initial screening method for identifying microplastics in marine sediments.
复制标题
一种用于识别海洋沉积物中微塑料的初步筛选方法的提案
DOI：
10.1038/s41598-021-00228-3
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发表时间：
2021-10-19
影响因子：
4.6
通讯作者：
Jiang N
中科院分区：
文献类型：
--
作者：
Hata T;Jiang N
海洋废弃物，通常被称为微塑料，广泛存在于海洋环境中，特别是沉积物中，被认为是一种环境危害，因为它集中了污染物，形成生物膜，并沉入海洋沉积物中。在沉积物中，它可能被底栖生物摄入，并对较高的食物链水平产生负面影响。在这项研究中，开发了一种新的方案来识别各种沉积物组分中的微塑料。该方案结合了基于常规岩土工程/地质试验方法的筛分和染色。筛分过程源自常规的粒度分布测试，并且在染色过程中使用无毒染料。该协议是安全的，易于执行，因为它只涉及使用传统的地质/岩土测试设备。新方案成功地用于对污染沉积物中不同类型和大小的微塑料颗粒进行染色和分类。这种安全，易于使用和有效的协议可以作为一种新的替代方法的基础，以研究沉积物中存在的微塑料，这可以使用岩土工程师/地质工程师熟悉的基本材料进行。
Marine debris, which is often called microplastics, is widespread in marine environments, particularly in sediments, and is recognized as an environmental hazard because it concentrates contaminants, forms biofilms, and sinks into marine sediments. In sediments, it may be ingested by benthos and have a negative impact on higher food chain levels. In this study, a new protocol was developed to identify microplastics in various sediment fractions. This protocol combined sieving and staining based on ordinal geotechnical/geological testing methods. The sieving process was derived from the conventional particle size distribution test, and nontoxic dyes were employed in the staining process. The protocol is safe and easy to perform as it merely involves the use of conventional geological/geotechnical testing equipment. The new protocol was successfully employed to stain and categorize different types and sizes of microplastic particles from contaminated sediments. This safe, easy-to-use, and efficient protocol can serve as the basis for a new alternative approach to study microplastics present in sediments, which can be performed using basic materials familiar to geotechnical/geological engineers.
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