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Nano-Chemical and Mechanical Mapping of Fine and Ultrafine Indoor Aerosols with Peak Force Infrared Microscopy
González-Fialkowski, Joseph M.1; Wang, Le1; Li, Yongjie2; Xu, Xiaoji G.1
2021-12-06
Source PublicationAnalytical Chemistry
ISSN0003-2700
Volume93Issue:50Pages:16845-16852
Abstract

Indoor aerosols can adversely affect human health as we increasingly spend more time indoors. One of the aerosol research challenges is measuring fine and ultrafine aerosol particles with nanoscale dimensions. Spectroscopic tools, often diffraction-limited, cannot access the intra-particle heterogeneity. In this work, we extend the non-invasive nanoscopy method of peak force infrared (PFIR) microscopy to study indoor aerosols. Laboratory-generated fine bioaerosols were collected after filtration with a surgical face mask to serve as a benchmark sample, followed by a variety of field-collected indoor aerosols with and without the filtration of a facemask. A general heterogeneity is observed in individual aerosol particles, despite their nanoscale dimension. The presence of protein, triglycerides, and salt is detected through chemical and mechanical mapping. The PFIR microscopy is suitable to identify the composition of fine and ultrafine aerosols. Its application is particularly meaningful for understanding the particle structure to reduce aerosol-related transmission of diseases.

DOI10.1021/acs.analchem.1c03659
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000744189200014
Scopus ID2-s2.0-85121031972
Fulltext Access
FWCI0.16991991
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorXu, Xiaoji G.
Affiliation1.Department of Chemistry, Lehigh University, Bethlehem, 6 E Packer Avenue, 18015, United States
2.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Taipa, Avenida da Universidade, 999078, Macao
Recommended Citation
GB/T 7714
González-Fialkowski, Joseph M.,Wang, Le,Li, Yongjie,et al. Nano-Chemical and Mechanical Mapping of Fine and Ultrafine Indoor Aerosols with Peak Force Infrared Microscopy[J]. Analytical Chemistry,2021,93(50):16845-16852.
APA González-Fialkowski, Joseph M.,Wang, Le,Li, Yongjie,&Xu, Xiaoji G..(2021).Nano-Chemical and Mechanical Mapping of Fine and Ultrafine Indoor Aerosols with Peak Force Infrared Microscopy.Analytical Chemistry,93(50),16845-16852.
MLA González-Fialkowski, Joseph M.,et al."Nano-Chemical and Mechanical Mapping of Fine and Ultrafine Indoor Aerosols with Peak Force Infrared Microscopy".Analytical Chemistry 93.50(2021):16845-16852.
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