Longitudinal dispersion of microplastics in aquatic flows using fluorometric techniques
Longitudinal dispersion of microplastics in aquatic flows using fluorometric techniques
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DOI：
10.1016/j.watres.2019.115337
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发表时间：
2020-03-01
期刊：
影响因子：
12.8
通讯作者：
Pearson, Jonathan M.
中科院分区：
文献类型：
--
作者：
Cook, Sarah;Chan, Hui-Ling;Pearson, Jonathan M.
微塑料是一种新兴的环境污染物。关于微塑料在自然水体中移动所涉及的精确传输过程的现有知识是有限的。微塑料的命运-运输模型依赖于有限的经验数据的数值模拟来支持和验证这些模型。我们采用荧光原理，在特制的实验室水槽中用标准光纤荧光计跟踪荧光染料和荧光染料染色的微塑料（聚乙烯）的运动。中性浮力micropastics表现在相同的方式作为溶质（罗丹明），更重要的是显示经典的基本分散理论在均匀的明渠流。这表明罗丹明，一种荧光示踪剂，可以释放到自然环境中，具有模仿水柱中微塑料运动的潜力。(C)2019作者爱思唯尔有限公司出版
Microplastics are an emerging environmental contaminant. Existing knowledge on the precise transport processes involved in the movement of microplastics in natural water bodies is limited. Microplastic fate-transport models rely on numerical simulations with limited empirical data to support and validate these models. We adopted fluorometric principles to track the movement of both fluorescent dye and florescent stained microplastics (polyethylene) in purpose-built laboratory flumes with standard fibreoptic fluorometers. Neutrally buoyant microptastics behaved in the same manner as a solute (Rhodamine) and more importantly displayed classical fundamental dispersion theory in uniform open channel flow. This suggests Rhodamine, a fluorescent tracer, can be released into the natural environment with the potential to mimic microplastic movement in the water column. (C) 2019 The Authors. Published by Elsevier Ltd.