Atmospheric chemistry
Household chemicals now rival cars for US VOCs
Open access · cc by · source: Europe PMC
A 2016 inventory finds volatile chemical products emit as much regulated VOC as all US mobile sources, with substantial IVOC/SOA potential.
Key findings
US VCP organics are 3.05 Tg (9.5 kg per person per year). After dropping regulatory-exempt compounds, 2.6 Tg VOC equals all mobile sources. About 20% of organics are IVOCs; effective SOA yield is 5.3% and ozone MIR 1.58 gO3 g−1. Usage and composition, not fate/transport, dominate uncertainty (95% CI 2.61–3.53 Tg).
Methodology
Authors built VCPy, mapping product-use categories, composition, evaporation vs use timescales, and controls, then allocated national 2016 emissions to counties and tested them with Monte Carlo uncertainty and Los Angeles emission-ratio evaluation.
Limitations
This is an inventory, not a chemistry-transport simulation of ozone or SOA. Indoor loss, time evolution, and some industrial controls are simplified, and Los Angeles skill may not generalize everywhere.
How this study connects
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A 2016 inventory finds volatile chemical products emit as much regulated VOC as all US mobile sources, with substantial IVOC/SOA potential.
Evidence for the claim as stated.
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