Organic peroxides in aerosol: key reactive intermediates for multiphase processes in the atmosphere

S Wang, Y Zhao, AWH Chan, M Yao, Z Chen… - Chemical …, 2023 - ACS Publications
Organic peroxides (POs) are organic molecules with one or more peroxide (− O–O−)
functional groups. POs are commonly regarded as chemically labile termination products …

Highly oxygenated organic molecules (HOM) from gas-phase autoxidation involving peroxy radicals: A key contributor to atmospheric aerosol

F Bianchi, T Kurtén, M Riva, C Mohr… - Chemical …, 2019 - ACS Publications
Highly oxygenated organic molecules (HOM) are formed in the atmosphere via autoxidation
involving peroxy radicals arising from volatile organic compounds (VOC). HOM condense on …

Recent advances in understanding secondary organic aerosol: Implications for global climate forcing

M Shrivastava, CD Cappa, J Fan… - Reviews of …, 2017 - Wiley Online Library
Anthropogenic emissions and land use changes have modified atmospheric aerosol
concentrations and size distributions over time. Understanding preindustrial conditions and …

Highly functionalized organic nitrates in the southeast United States: Contribution to secondary organic aerosol and reactive nitrogen budgets

BH Lee, C Mohr, FD Lopez-Hilfiker… - Proceedings of the …, 2016 - National Acad Sciences
Speciated particle-phase organic nitrates (pONs) were quantified using online chemical
ionization MS during June and July of 2013 in rural Alabama as part of the Southern Oxidant …

[HTML][HTML] An extractive electrospray ionization time-of-flight mass spectrometer (EESI-TOF) for online measurement of atmospheric aerosol particles

FD Lopez-Hilfiker, V Pospisilova… - Atmospheric …, 2019 - amt.copernicus.org
Real-time, online measurements of atmospheric organic aerosol (OA) composition are an
essential tool for determining the emissions sources and physicochemical processes …

Molecular identification of organic vapors driving atmospheric nanoparticle growth

C Mohr, JA Thornton, A Heitto, FD Lopez-Hilfiker… - Nature …, 2019 - nature.com
Particles formed in the atmosphere via nucleation provide about half the number of
atmospheric cloud condensation nuclei, but in many locations, this process is limited by the …

Molecular composition and volatility of organic aerosol in the Southeastern US: implications for IEPOX derived SOA

FD Lopez-Hilfiker, C Mohr, EL D'ambro… - … science & technology, 2016 - ACS Publications
We present measurements as part of the Southern Oxidant and Aerosol Study (SOAS)
during which atmospheric aerosol particles were comprehensively characterized. We …

Constraining the sensitivity of iodide adduct chemical ionization mass spectrometry to multifunctional organic molecules using the collision limit and thermodynamic …

FD Lopez-Hilfiker, S Iyer, C Mohr… - Atmospheric …, 2016 - amt.copernicus.org
The sensitivity of a chemical ionization mass spectrometer (ions formed per number density
of analytes) is fundamentally limited by the collision frequency between reagent ions and …

Impact of thermal decomposition on thermal desorption instruments: advantage of thermogram analysis for quantifying volatility distributions of organic species

H Stark, RLN Yatavelli, SL Thompson… - … science & technology, 2017 - ACS Publications
We present results from a high-resolution chemical ionization time-of-flight mass
spectrometer (HRToF-CIMS), operated with two different thermal desorption inlets, designed …

Quantitative constraints on autoxidation and dimer formation from direct probing of monoterpene-derived peroxy radical chemistry

Y Zhao, JA Thornton, HOT Pye - Proceedings of the …, 2018 - National Acad Sciences
Organic peroxy radicals (RO2) are key intermediates in the atmospheric degradation of
organic matter and fuel combustion, but to date, few direct studies of specific RO2 in …