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Title: Atmospheric Solids Analysis Probe Mass Spectrometry: A New Approach for Airborne Particle Analysis

Abstract

Secondary organic aerosols (SOA) formed in the atmosphere from the condensation of semivolatile oxidation products are a significant component of airborne particles which have deleterious effects on health, visibility, and climate. In this study, atmospheric solids analysis probe mass spectrometry (ASAP-MS) is applied for the first time to the identification of organics in particles from laboratory systems as well as from ambient air. SOA were generated in the laboratory from the ozonolysis of r-pinene and isoprene, as well as from NO3 oxidation of r-pinene, and ambient air was sampled at forested and suburban sites. Particles were collected by impaction on ZnSe disks, analyzed by Fourier transform-infrared spectroscopy (FT-IR) and then transferred to an ASAP-MS probe for further analysis. ASAP-MS data for the laboratory-generated samples show peaks from wellknown products of these reactions, and higher molecular weight oligomers are present in both laboratory and ambient samples. Oligomeric products are shown to be present in the NO3 reaction products for the first time. A major advantage of this technique is that minimal sample preparation is required, and complementary information from nondestructive techniques such as FT-IR can be obtained on the same samples. In addition, a dedicated instrument is not required for particlemore » analysis. This work establishes that ASAP-MS will be useful for identification of organic components of SOA in a variety of field and laboratory studies.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1097989
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Analytical Chemistry, 82(14):5922–5927
Additional Journal Information:
Journal Name: Analytical Chemistry, 82(14):5922–5927
Country of Publication:
United States
Language:
English
Subject:
Environmental Molecular Sciences Laboratory

Citation Formats

Bruns, Emily A., Perraud, Veronique M., Greaves, John, and Finlayson-Pitts, Barbara J. Atmospheric Solids Analysis Probe Mass Spectrometry: A New Approach for Airborne Particle Analysis. United States: N. p., 2010. Web. doi:10.1021/ac101028j.
Bruns, Emily A., Perraud, Veronique M., Greaves, John, & Finlayson-Pitts, Barbara J. Atmospheric Solids Analysis Probe Mass Spectrometry: A New Approach for Airborne Particle Analysis. United States. doi:10.1021/ac101028j.
Bruns, Emily A., Perraud, Veronique M., Greaves, John, and Finlayson-Pitts, Barbara J. Thu . "Atmospheric Solids Analysis Probe Mass Spectrometry: A New Approach for Airborne Particle Analysis". United States. doi:10.1021/ac101028j.
@article{osti_1097989,
title = {Atmospheric Solids Analysis Probe Mass Spectrometry: A New Approach for Airborne Particle Analysis},
author = {Bruns, Emily A. and Perraud, Veronique M. and Greaves, John and Finlayson-Pitts, Barbara J.},
abstractNote = {Secondary organic aerosols (SOA) formed in the atmosphere from the condensation of semivolatile oxidation products are a significant component of airborne particles which have deleterious effects on health, visibility, and climate. In this study, atmospheric solids analysis probe mass spectrometry (ASAP-MS) is applied for the first time to the identification of organics in particles from laboratory systems as well as from ambient air. SOA were generated in the laboratory from the ozonolysis of r-pinene and isoprene, as well as from NO3 oxidation of r-pinene, and ambient air was sampled at forested and suburban sites. Particles were collected by impaction on ZnSe disks, analyzed by Fourier transform-infrared spectroscopy (FT-IR) and then transferred to an ASAP-MS probe for further analysis. ASAP-MS data for the laboratory-generated samples show peaks from wellknown products of these reactions, and higher molecular weight oligomers are present in both laboratory and ambient samples. Oligomeric products are shown to be present in the NO3 reaction products for the first time. A major advantage of this technique is that minimal sample preparation is required, and complementary information from nondestructive techniques such as FT-IR can be obtained on the same samples. In addition, a dedicated instrument is not required for particle analysis. This work establishes that ASAP-MS will be useful for identification of organic components of SOA in a variety of field and laboratory studies.},
doi = {10.1021/ac101028j},
journal = {Analytical Chemistry, 82(14):5922–5927},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {7}
}