Atmospheric Processing of Nitrophenols and Nitrocresols From Biomass Burning Emissions

AbstractWe present the analysis of the atmospheric budget of nitrophenols and nitrocresols, a class of nitroaromatics that raise great ecosystem and health concerns due to their phytotoxic and genotoxic properties, during the spring wheat harvest season in Eastern China. Significant quantities with maximum concentrations over 100 pptv and distinct diurnal patterns that peak around midnight and maintain low levels throughout the day were observed, in coincidence with the extensive open crop residue burning activities conducted in the vicinity. An observationally constrained zero‐dimension box model was constructed to assess the relative importance of various production and removal pathways at play in determining the measured surface concentrations. The NO3‐initiated dark chemistry, in concert with meteorological variations predominantly dilution and entrainment, exerts major controls over the observed diurnal behaviors of nitrophenols and nitrocresols. Structural isomerism is predicted to have a significant impact on the multiphase partitioning and chemistry of nitrophenol isomers. Furthermore, simulations show that an appreciable amount of nitrophenols is present in the aerosol water, thereby representing an important source of water‐soluble brown carbon in atmospheric aerosols under the humid subtropical weather prevailing during the campaign. Sensitivity analysis performed on the model parameterizations of reaction schemes helps to further understand the chemistry underlying the diurnal cycles. Implementing NO‐dependent yields of cresols from toluene photooxidation improves the model predictions of nitrocresols at low NO ranges (<1 ppb), thereby underscoring the complexity of the peroxy radical reaction pathways from toluene photooxidation under atmospheric relevant conditions.

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Details

Published: Nov 18, 2020
Vol/Issue: 125(22)
License: View

Authors

H

Hongli Wang

State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental Sciences Shanghai China

Y

Yaqin Gao

State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental Sciences Shanghai China

S

Siyuan Wang

Atmospheric Chemistry Observation and Modeling Laboratory National Center for Atmospheric Research Boulder CO USA

X

Xiaokang Wu

Department of Atmospheric Sciences Texas A&M University College Station TX USA

Y

Ying Liu

State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering Peking University Beijing China

X

Xin Li

State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering Peking University Beijing China

D

Dandan HUANG

State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental Sciences Shanghai China

S

Shengrong Lou

State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental Sciences Shanghai China

Z

Zhijun Wu

State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering Peking University Beijing China

S

Song Guo

State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering Peking University Beijing China

S

Shengao Jing

State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental Sciences Shanghai China

Y

Yingjie Li

State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental Sciences Shanghai China

C

Cheng Huang

State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental Sciences Shanghai China

G

Geoffrey S. Tyndall

Atmospheric Chemistry Observation and Modeling Laboratory National Center for Atmospheric Research Boulder CO USA

J

John J. Orlando

Atmospheric Chemistry Observation and Modeling Laboratory National Center for Atmospheric Research Boulder CO USA

X

Xuan Zhang

Department of Life and Environmental Sciences University of California Merced CA USA

Funding

National Science Foundation

Cite This Article

Hongli Wang, Yaqin Gao, Siyuan Wang, et al. (2020). Atmospheric Processing of Nitrophenols and Nitrocresols From Biomass Burning Emissions. Journal of Geophysical Research: Atmospheres, 125(22). https://doi.org/10.1029/2020jd033401

Atmospheric Processing of Nitrophenols and Nitrocresols From Biomass Burning Emissions

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