Environmental Implications of Hydroxyl Radicals (OH)

S Gligorovski, R Strekowski, S Barbati… - Chemical reviews, 2015 - ACS Publications
The hydroxyl radical (• OH) is one of the most powerful oxidizing agents, able to react
unselectively and instantaneously with the surrounding chemicals, including organic …

Homogeneous and heterogeneous photolysis of nitrate in the atmosphere: state of the science, current research needs, and future prospects

Y Cao, Q Ma, B Chu, H He - Frontiers of Environmental Science & …, 2023 - Springer
Nitrate is an important component of atmospheric particulate matter and affects air quality,
climate, human health, and the ecosystem. Nitrate was previously considered a permanent …

Photolysis of Particulate Nitrate as a Source of HONO and NOx

C Ye, N Zhang, H Gao, X Zhou - Environmental science & …, 2017 - ACS Publications
Photolysis of nitric acid on the surface has been found recently to be greatly enhanced from
that in the gas phase. Yet, photolysis of particulate nitrate (pNO3) associated with …

Phase State Regulates Photochemical HONO Production from NaNO3/Dicarboxylic Acid Mixtures

Q Li, S Ma, Y Liu, X Wu, H Fu, X Tu, S Yan… - Environmental …, 2024 - ACS Publications
Field observations of daytime HONO source strengths have not been well explained by
laboratory measurements and model predictions up until now. More efforts are urgently …

HONO budget and its role in nitrate formation in the rural North China Plain

C Xue, C Zhang, C Ye, P Liu, V Catoire… - … science & technology, 2020 - ACS Publications
Nitrous acid (HONO) is a major precursor of tropospheric hydroxyl radical (OH) that
accelerates the formation of secondary pollutants. The HONO sources, however, are not well …

A comprehensive model test of the HONO sources constrained to field measurements at rural North China Plain

Y Liu, K Lu, X Li, H Dong, Z Tan, H Wang… - … science & technology, 2019 - ACS Publications
As nitrous acid (HONO) photolysis is an important source of hydroxyl radical (OH),
apportionment of the ambient HONO sources is necessary to better understand atmospheric …

Unexpectedly high indoor hydroxyl radical concentrations associated with nitrous acid

E Gomez Alvarez, D Amedro, C Afif… - Proceedings of the …, 2013 - pnas.org
The hydroxyl (OH) radical is the most important oxidant in the atmosphere since it controls its
self-oxidizing capacity. The main sources of OH radicals are the photolysis of ozone and the …

The significant contribution of HONO to secondary pollutants during a severe winter pollution event in southern China

X Fu, T Wang, L Zhang, Q Li, Z Wang… - Atmospheric …, 2019 - acp.copernicus.org
Nitrous acid (HONO) can strongly affect atmospheric photochemistry in polluted regions
through the production of hydroxyl radicals (OHs). In January 2017, a severe pollution …

Missing gas-phase source of HONO inferred from Zeppelin measurements in the troposphere

X Li, F Rohrer, A Hofzumahaus, T Brauers, R Häseler… - Science, 2014 - science.org
Gaseous nitrous acid (HONO) is an important precursor of tropospheric hydroxyl radicals
(OH). OH is responsible for atmospheric self-cleansing and controls the concentrations of …

Characteristics and sources of nitrous acid in an urban atmosphere of northern China: Results from 1-yr continuous observations

D Li, L Xue, L Wen, X Wang, T Chen, A Mellouki… - Atmospheric …, 2018 - Elsevier
Nitrous acid (HONO) is a key reservoir of the hydroxyl radical (OH) and plays a central role
in the atmospheric chemistry. To understand the sources and impact of HONO in the …