Photothermal infrared imaging: identification and visualization of micro- and nanoplastics in environmental matrices

Ilia M. Pavlovetc; Kirill Kniazev; Junyeol Kim; Kyle Doudrick; Masaru Kuno

doi:10.1117/12.2577003

5 March 2021 Photothermal infrared imaging: identification and visualization of micro- and nanoplastics in environmental matrices

Ilia M. Pavlovetc, Kirill Kniazev, Junyeol Kim, Kyle Doudrick, Masaru Kuno

Author Affiliations +

Proceedings Volume 11656, Advanced Chemical Microscopy for Life Science and Translational Medicine 2021; 1165618 (2021) https://doi.org/10.1117/12.2577003
Event: SPIE BiOS, 2021, Online Only

Abstract

Infrared photothermal heterodyne imaging (IR-PHI) is an established all-optical, table-top approach for conducting super-resolution mid-infrared microscopy and spectroscopy on submicrometer-sized particles. The instrument’s capabilities are highlighted by its ability to operate in spectroscopically-crowded environments. This includes specimens obtained from environmental matrices where particulates with different morphologies, chemical compositions, and abundances exist. Here, proof-of-concept IR-PHI measurements have been conducted on anthropogenic micro- and nanoplastics (MNPs) derived from the breakdown of consumer products. In particular, IR-PHI is used to characterize MNPs extracted from steeped plastic teabags and floor dust from a household vacuum. IR-PHI results reveal the presence of complex MNP structures made of polyamide fibers and acrylonitrile butadiene styrene MNPs.

Conference Presentation

Citation Download Citation

Ilia M. Pavlovetc, Kirill Kniazev, Junyeol Kim, Kyle Doudrick, and Masaru Kuno "Photothermal infrared imaging: identification and visualization of micro- and nanoplastics in environmental matrices", Proc. SPIE 11656, Advanced Chemical Microscopy for Life Science and Translational Medicine 2021, 1165618 (5 March 2021); https://doi.org/10.1117/12.2577003

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