Volatile organic compound emissions from solvent- and water-borne coatings – compositional differences and tracer compound identifications

The emissions of volatile organic compounds (VOCs) from volatile chemical products (VCPs) – specifically personal care products, cleaning agents, coatings, adhesives, and pesticides – are emerging as the largest source of petroleum-derived organic carbon in US cities. Previous work has shown that th...

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Bibliographic Details
Published in:Atmospheric chemistry and physics 2021-04, Vol.21 (8), p.6005-6022
Main Authors: Stockwell, Chelsea E, Coggon, Matthew M, Gkatzelis, Georgios I, Ortega, John, McDonald, Brian C, Peischl, Jeff, Aikin, Kenneth, Gilman, Jessica B, Trainer, Michael, Warneke, Carsten
Format: Article
Language:English
Subjects:
Carbon
Chemical compounds
Cleaning
Cleaning agents
Coatings
Consumer products
Emission
Emissions
Environmental aspects
Evaporation
Evaporation rate
Experiments
Gas chromatography
Headspace
Hydrocarbons
Industrial applications
Laboratories
Mass
Mass spectrometry
Molecular weight
Organic carbon
Organic compounds
Personal grooming
Pesticides
Petroleum
Population density
Primers
Primers (coatings)
Protective coatings
Reaction time
Sealers
Solvents
Surveys
Toiletries
Tracers
Tracers (Biology)
Trends
Urban areas
VOCs
Volatile organic compound emissions
Volatile organic compounds
Volatility
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Summary:The emissions of volatile organic compounds (VOCs) from volatile chemical products (VCPs) – specifically personal care products, cleaning agents, coatings, adhesives, and pesticides – are emerging as the largest source of petroleum-derived organic carbon in US cities. Previous work has shown that the ambient concentration of markers for most VCP categories correlates strongly with population density, except for VOCs predominantly originating from solvent- and water-borne coatings (e.g., parachlorobenzotrifluoride (PCBTF) and Texanol®, respectively). Instead, these enhancements were dominated by distinct emission events likely driven by industrial usage patterns, such as construction activity. In this work, the headspace of a variety of coating products was analyzed using a proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS) and a gas chromatography (GC) preseparation front end to identify composition differences for various coating types (e.g., paints, primers, sealers, and stains). Evaporation experiments of several products showed high initial VOC emission rates, and for the length of these experiments, the majority of the VOC mass was emitted during the first few hours following application. The percentage of mass emitted as measured VOCs (
ISSN:1680-7324
1680-7316
1680-7324
DOI:10.5194/acp-21-6005-2021