Volatility distribution of primary organic aerosol emissions from household crop waste combustion in China

Peng Chen; Zihao Wang; Yangmei Zhang; Tailun Guo; Youxuan Li; Philip K Hopke; Xinghua Li

doi:10.1016/j.envpol.2023.121353

Volatility distribution of primary organic aerosol emissions from household crop waste combustion in China

Environ Pollut. 2023 Apr 15:323:121353. doi: 10.1016/j.envpol.2023.121353. Epub 2023 Feb 24.

Authors

Peng Chen¹, Zihao Wang¹, Yangmei Zhang², Tailun Guo¹, Youxuan Li¹, Philip K Hopke³, Xinghua Li⁴

Affiliations

¹ School of Space and Environment, Beihang University, Beijing, 100191, China.
² State Key Laboratory of Severe Weather/Key Laboratory of Atmospheric Chemistry of China Meteorological Administration, Chinese Academy of Meteorological Sciences, Beijing, 100081, China.
³ Department of Public Health Sciences, University of Rochester School of Medicine and Dentistry, Rochester, NY, 14642, USA; Institute for a Sustainable Environemnt, Clarkson University, Potsdam, NY, 13699, USA.
⁴ School of Space and Environment, Beihang University, Beijing, 100191, China. Electronic address: lixinghua@buaa.edu.cn.

PMID: 36842623
DOI: 10.1016/j.envpol.2023.121353

Abstract

Biomass-burning emissions are a significant source of primary organic aerosol (POA). Volatility is one of the most important physical properties of organic aerosol (OA). Dilution and thermodenuder (TD) measurements were used to investigate the volatility of POA from household crop waste combustion in China. Between 10% and 30% of the POA desorbed when diluted from 20:1 to 120:1, while 10%-40% of POA evaporated in the TD when heated to 150 °C. Thus, a considerable proportion of the POA emissions were volatile. A dynamic mass transfer model was applied to derived volatility distributions of POA based on TD data. A best fit volatility distributions for POA and associated mass accommodation coefficients (α), and the enthalpy of vaporization (ΔH_vap) were presented. The emissions factors and volatility distribution of POA emission from household crop waste combustion in this study can be used to improve emission inventories and simulate gas-particle partitioning of organic aerosol in chemical transport models.

Keywords: Dilution; Gas-particle partitioning; Household crop waste combustion; Primary organic aerosol; Thermodenuder; Volatility distribution.

MeSH terms

Aerosols / analysis
Air Pollutants* / analysis
Hot Temperature
Models, Chemical
Vehicle Emissions / analysis
Volatilization

Substances

Air Pollutants
Aerosols
Vehicle Emissions