Simultaneous Optical Photothermal Infrared (O-PTIR) and Raman Spectroscopy of Submicrometer Atmospheric Particles

Analytical Chemistry
Nicole E OlsonAndrew P Ault

Abstract

Physicochemical analysis of individual atmospheric aerosols at the most abundant sizes in the atmosphere (<1 μm) is analytically challenging, as hundreds to thousands of species are often present in femtoliter volumes. Vibrational spectroscopies, such as infrared (IR) and Raman, have great potential for probing functional groups in single particles at ambient pressure and temperature. However, the diffraction limit of IR radiation limits traditional IR microscopy to particles > ∼10 μm, which have less relevance to aerosol health and climate impacts. Optical photothermal infrared (O-PTIR) spectroscopy is a contactless method that circumvents diffraction limitations by using changes in the scattering intensity of a continuous wave visible laser (532 nm) to detect the photothermal expansion when a vibrational mode is excited by a tunable IR laser (QCL: 800-1800 cm-1 or OPO: 2600-3600 cm-1). Herein, we simultaneously collect O-PTIR spectra with Raman spectra at a single point for individual particles with aerodynamic diameters <400 nm (prior to impaction and spreading) at ambient temperature and pressure, by also collecting the inelastically scattered visible photons for Raman spectra. O-PTIR and Raman spectra were collected for su...Continue Reading

References

Jun 30, 2006·Journal of the Air & Waste Management Association·C Arden Pope, Douglas W Dockery
Jul 13, 2006·The Journal of Physical Chemistry. a·Liang-Yu WangLi-Jun Zhao
Mar 3, 2010·Proceedings of the National Academy of Sciences of the United States of America·D K FarmerJ L Jimenez
Oct 15, 2010·Nature·Annele VirtanenAri Laaksonen
Aug 11, 2012·Carbohydrate Research·Alicia Beatriz BrizuelaSilvia Antonia Brandán
May 4, 2013·Environmental Science & Technology·Andrew P AultVicki H Grassian
Jul 4, 2013·The Journal of Physical Chemistry. a·Carlena J EbbenFranz M Geiger
Oct 16, 2013·Journal of the American Chemical Society·Daniel P VeghteMiriam Arak Freedman
Apr 9, 2015·Environmental Science & Technology·Rachel E O'BrienMary K Gilles
Oct 10, 2015·Accounts of Chemical Research·Junghoon JahngEric O Potma
Apr 7, 2016·Science Advances·Derek NowakSung Park
Sep 7, 2016·Analytical Chemistry·Johannes OfnerBernhard Lendl
Dec 14, 2016·Chemical Reviews·Alexandre Dazzi, Craig B Prater
Dec 15, 2016·Nano Letters·Thejaswi U TumkurIsabell Thomann
Jan 21, 2017·Analytical Chemistry·Andrew P Ault, Jessica L Axson
Jul 12, 2017·The Journal of Physical Chemistry. a·Rebecca L CraigAndrew P Ault
Nov 15, 2017·Chemical Society Reviews·Miriam Arak Freedman
Dec 28, 2017·Analytical Chemistry·Tomasz P Wrobel, Rohit Bhargava
Aug 21, 2018·Environmental Science. Processes & Impacts·Peter N TirellaAndrew P Ault
Jul 18, 2019·Analytical Chemistry·Xiaojie LiJi-Xin Cheng
Dec 7, 2019·ACS Central Science·Rachel M KirpesKerri A Pratt
Feb 14, 2020·Nature·Irene C DedoussiSteven R H Barrett
Mar 21, 2020·Advanced Science·Oxana KlementievaFerenc Borondics
Apr 2, 2020·Analytical Chemistry·Ziying LeiAndrew P Ault
May 20, 2020·Chemical Society Reviews·Dmitry KurouskiAndrea Centrone

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