Analysis of small plastics in coastal surface water samples of Okinawa using optical tweezers-Raman spectroscopy

Domna G. Kotsifaki; Christina Ripken; Sile Nic Chormaic

doi:10.1117/12.2616110

27 October 2021 Analysis of small plastics in coastal surface water samples of Okinawa using optical tweezers-Raman spectroscopy

Domna G. Kotsifaki, Christina Ripken, Sile Nic Chormaic

Author Affiliations +

Proceedings Volume 11926, Optical Manipulation and Structured Materials Conference 2021; 119260J (2021) https://doi.org/10.1117/12.2616110
Event: SPIE Technologies and Applications of Structured Light, 2021, Online, Japan

Abstract

In this work, we employ an optical trapping-Raman spectroscopy technique for simultaneous characterization and monitoring of the physical and chemical properties of single small micro-plastics in a seawater environment. Through analysis of the data, we chemically identify the plastic and distinguish it from organic matter and/or mineral sediments. Additionally, we categorize the particles based on their size and shapes such as beads, fragments, and fibers. The proposed technique paves the way to understand the fragmentation process of aged polymers, as well as to monitoring marine plastic pollution.

Citation Download Citation

Domna G. Kotsifaki, Christina Ripken, and Sile Nic Chormaic "Analysis of small plastics in coastal surface water samples of Okinawa using optical tweezers-Raman spectroscopy", Proc. SPIE 11926, Optical Manipulation and Structured Materials Conference 2021, 119260J (27 October 2021); https://doi.org/10.1117/12.2616110

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