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In relation to this article, we declare that there is no conflict of interest.
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Received May 20, 2020
Accepted August 27, 2020
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Image cytometry of irregular microplastic particles in a cross-slot microchannel utilizing viscoelastic focusing

1Department of Energy Systems Research, Ajou University, Suwon 16499, Korea 2Division of Environmental Science and Ecological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea 3Department of Polymer Engineering, The University of Suwon, Hwaseong, Gyeonggi 18323, Korea 4Department of Chemical Engineering, Ajou University, Suwon 16499, Korea
sjlee@suwon.ac.kr
Korean Journal of Chemical Engineering, December 2020, 37(12), 2136-2142(7), 10.1007/s11814-020-0670-7
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Abstract

Microplastic particles have recently attracted much attention owing to their potential adverse effects on marine and terrestrial environments. Although several studies have been conducted on this topic, one of the prominent existing challenges is developing analytical methods to precisely characterize isolated microplastics. Specifically, a systematic method that determines both the size and shape of irregular micron-sized particles is required because conventional optical methods provide only two-dimensional images of microplastics and cannot easily handle cases of tilting or aggregation of particles. In this study, we demonstrate that previously developed microfluidic technologies can be successfully applied to measure the size and shape of oblate microparticles utilizing viscoelastic particle focusing. Furthermore, this technique is also applicable for irregular microplastic fragments that are predominantly found in environmental samples.

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