cover image: Composition, Emissions, and Air Quality Impacts of Hazardous Air Pollutants in Unburned Natural Gas from Residential Stoves in California

20.500.12592/gvhhqf

Composition, Emissions, and Air Quality Impacts of Hazardous Air Pollutants in Unburned Natural Gas from Residential Stoves in California

19 Oct 2022

We then turned the gas flow knob on the same day were treated as replicate samples; therefore, between medium and high for the entirety of the sampling we selected only the first of the two samples to be used in our event. [...] To V = V × C evaluate the contribution of downstream NG emissions to benzene methane benzene (2) regional and statewide benzene and BTEX budgets, we used where Vbenzene represents the volumetric emissions of benzene methane emission estimates from previous studies of the from the leaking stove (nL hr−1); Vmethane represents the downstream NG sector in California to scale bootstrapped volumetric me. [...] The remaining samples collected in the Greater Los Angeles region Median concentrations of BTEX were all within 0.1 ppmv of had the most variability of the remaining regions, with a BTEX the means in the following regions: Greater Los Angeles, 95% CI of 7.5−24 ppmv, compared to the next highest BTEX Bakersfield, Fresno, and Sacramento. [...] Some samples collected in the North San Fernando and Santa Clarita Valleys (NSFV/SCV) had exceptionally high concentrations of BTEX in the gas; therefore, we analyzed these samples as a separate region from the remainder of the samples taken in the Greater Los Angeles region. [...] b95% confidence intervals are calculated by scaling the upper and lower values of the methane estimate from the reported study and the confidence interval of the concentration of the compound from this study.

Authors

Eric D. Lebel; Drew R. Michanowicz (ORCID: g/0000-0002-2538-4819); Kelsey R. Bilsback (ORCID: g/0000-0002-5996-1522); Lee Ann L. Hill (ORCID: g/0000-0001-9919-9416); Jackson S. W. Goldman (ORCID: g/0000-0002-9239-2982); Jeremy K. Domen; Jessie M. Jaeger; Angélica Ruiz; Seth B. C. Shonkoff (ORCID: g/0000-0002-2696-0259)

Pages
11
Published in
United States of America