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Secondary organic aerosol formation from anthropogenic air pollution: Rapid and higher than expected
[1] The atmospheric chemistry of volatile organic compounds (VOCs) in urban areas results in the formation of ‘photochemical smog’, including secondary organic aerosol (SOA). State-of-the-art SOAExpand
Absolute absorption cross sections of ozone in the 185- to 350-nm wavelength range
The absorption cross sections of ozone have been measured in the wavelength range 185-350 nm and in the temperature range 225-298 K. The absolute ozone concentrations were established by measuringExpand
A missing sink for gas-phase glyoxal in Mexico City: Formation of secondary organic aerosol
[1] The sources of secondary organic aerosol (SOA) are highly uncertain. Direct measurements of gas-phase glyoxal in Mexico City are compared to experimentally constrained model predictions. ObservedExpand
Mexico City aerosol analysis during MILAGRO using high resolution aerosol mass spectrometry at the urban supersite (T0) – Part 1: Fine particle composition and organic source apportionment
Submicron aerosol was analyzed during the MI- LAGRO field campaign in March 2006 at the T0 urban super- site in Mexico City with a High-Resolution Time-of-Flight Aerosol Mass SpectrometerExpand
The Reaction Probability of OH on Organic Surfaces of Tropospheric Interest
Using a flow-tube reactor coupled to a chemical ionization mass spectrometer, we investigated the heterogeneous loss of OH on Halocarbon wax, two types of organized organic monolayers, and severalExpand
Megacities and Atmospheric Pollution
Abstract About half of the world's population now lives in urban areas because of the opportunity for a better quality of life. Many of these urban centers are expanding rapidly, leading to theExpand
Air quality in the Mexico megacity : an integrated assessment
Prologue. Preface. Chapter One: Air Quality Impacts: A Local and Global Concern. 1. Introduction. 2. Urban Air Pollution: Historical Record. 3. Sources and Transport of Air Pollution. 4. Impacts ofExpand
Measurement of ambient aerosols in northern Mexico City by single particle mass spectrometry
Continuous ambient measurements with aerosol time-of-flight mass spectrometry (ATOFMS) were made in an industrial/residential section in the northern part of Mex- ico City as part of the Mexico CityExpand
Atmospheric New Particle Formation Enhanced by Organic Acids
Atmospheric aerosols often contain a substantial fraction of organic matter, but the role of organic compounds in new nanometer-sized particle formation is highly uncertain. Laboratory experimentsExpand
DOAS measurement of glyoxal as an indicator for fast VOC chemistry in urban air
[1] We present the first direct measurements of glyoxal (CHOCHO) in the atmosphere, and demonstrate that glyoxal measurements are possible by differential optical absorption spectroscopy (DOAS).Expand