Measurements of the inherent optical properties of aqueous suspensions of microplastics

被引：3
作者：
Koestner, Daniel [1 ]
Foster, Robert [2 ]
El-Habashi, Ahmed [2 ]
Cheatham, Shea [1 ]
机构：
[1] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[2] US Naval Res Lab, Remote Sensing Div, Washington, DC USA
来源：
LIMNOLOGY AND OCEANOGRAPHY LETTERS | 2024年 / 9卷 / 04期
基金：
美国国家航空航天局;
关键词：
LIGHT-SCATTERING; PARTICLE-SIZE; SOUTH-PACIFIC; BALTIC SEA; IDENTIFICATION; WATER; ENVIRONMENT; ABUNDANCE; SEDIMENT; OCEAN;
D O I：
10.1002/lol2.10387
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Libraries of inherent optical properties (IOPs) of microplastics are sparse, yet they are essential for the development of optical techniques to detect and quantify microplastics in the ocean. In this study, we describe our results and technique for the measurement of the IOPs of microplastic suspensions generated from commonly utilized plastics. The measurements included angle-resolved polarized light scattering, and spectral absorption and beam attenuation coefficients. We also performed ancillary characterization of particle properties, including size distribution, shape, and mass concentration of suspended matter. We observed several unique optical characteristics regarding absorption, scattering, and polarization properties compared with typical marine particle assemblages. We show that these results are useful for radiative transfer simulations as well as the potential development of novel plastic detection techniques from above- or in-water optical measurements.
引用
收藏
页码：487 / 497
页数：11
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