Photothermal infrared imaging: identification and visualization of micro- and nanoplastics in environmental matrices
Photothermal infrared imaging: identification and visualization of micro- and nanoplastics in environmental matrices
复制标题
光热红外成像：环境基质中微米和纳米塑料的识别和可视化
DOI：
10.1117/12.2577003
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Kuno, Masaru
中科院分区：
文献类型：
--
作者：
Pavlovetc, Ilia M.;Kniazev, Kirill;Kim, Junyeol;Doudrick, Kyle;Kuno, Masaru
红外光热外差成像（IR-PHI）是一种成熟的全光学、台式方法，用于对亚微米大小的颗粒进行超分辨率中红外显微镜和光谱学。该仪器的性能突出体现在它能够在光谱拥挤的环境中工作。这包括从环境基质中获得的标本，其中存在具有不同形态，化学成分和丰度的颗粒。在这里，概念验证IR-PHI测量已经对源自消费品分解的人为微塑料和纳米塑料（MNPs）进行了测量。特别是，IR-PHI用于表征从浸泡的塑料茶包和家用吸尘器的地板灰尘中提取的MNPs。IR-PHI结果揭示了由聚酰胺纤维和丙烯腈-丁二烯-苯乙烯复合MNP结构的存在。
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.
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影响因子：
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通讯作者：
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作者：
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