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AE: HONO来源机制揭示华北大气氧化能力被严重低估（图）
HONO 来源机制 华北大气 氧化能力
2020/10/22
大气亚硝酸（HONO）是对流层氢氧自由基（HOx=OH+HO2）的重要来源。白天HONO光解对OH自由基的贡献可高达60%以上，在加速气相化学反应的同时，可导致硝酸盐和二次有机气溶胶（SOA）等爆发性增长从而促进重霾污染发生。但气态亚硝酸来源尚未完全厘清，尤其是其非均相形成过程，探索其来源已成为大气化学领域的难点和热点。
近期，中科院合肥研究院安光所安光所谢品华研究员课题组在大气HONO垂直分布研究方面取得新进展，相关研究工作以《北京市区夜间边界层HONO和NO2高分辨率垂直分布及其来源》为题，发表在国际学术期刊Atmospheric Chemistry and Physics上。
近期，安光所谢品华研究员课题组在宽带腔增强吸收光谱技术及农田HONO排放通量研究方面取得重要进展，相关研究成果发表在国际刊物Atmospheric Environment上（2019, 196:10-19）。
Simultaneous HONO measurements in and above a forest canopy: influence of turbulent exchange on mixing ratio differences
HONO measurements a forest canopy turbulent exchange ratio differences
2011/2/24
We have combined chemical and micrometeorological measurements to investigate the formation and distribution of HONO throughout a forest canopy. HONO was measured simultaneously at two heights, close ...
Measurements of HONO during BAQS-Met
HONO BAQS-Met
2010/12/28
Measurements of nitrous acid (HONO) were performed as part of the 2007 Border Air Quality and Meteorology Study (BAQS-Met) at the Harrow, Ontario, Canada supersite between 20 June and 10 July 2007. Ni...
Impacts of HONO sources on the photochemistry in Mexico City during the MCMA-2006/MILAGO Campaign
HONO sources the photochemistry Mexico City the MCMA-2006/MILAGO Campaign
2010/8/16
The contribution of HONO sources to the photochemistry in Mexico City is investigated during the MCMA-2006/MILAGO Campaign using the WRF-CHEM model. Besides the homogeneous reaction of NO with OH, fou...
Observations of high rates of NO2-HONO conversion in the nocturnal atmospheric boundary layer in Kathmandu, Nepal
NO2-HONO conversion nocturnal atmospheric boundary layer Kathmandu Nepal
2009/9/11
Nitrous acid (HONO) plays a significant role in the atmosphere, especially in the polluted troposphere. Its photolysis after sunrise is an important source of hydroxyl free radicals (OH). Measurements...
Heterogeneous conversion of NO2 on secondary organic aerosol surfaces: A possible source of nitrous acid（HONO）in the atmosphere?
Heterogeneous conversion NO2 secondary organic aerosol nitrous acid HONO
2009/3/10
The heterogeneous conversion of NO2 on different secondary organic aerosols (SOA) was investigated with the focus on a possible formation of nitrous acid (HONO). In one set of experiments different or...
Characterisation of the photolytic HONO-source in the atmosphere simulation chamber SAPHIR
photolytic HONO-source atmosphere simulation chamber SAPHIR
2009/2/16
HONO formation has been proposed as an important OH radical source in simulation chambers for more than two decades. Besides the heterogeneous HONO formation by the dark reaction of NO2 and adsorbed w...
Surprisingly small HONO emissions from snow surfaces at Browning Pass, Antarctica
HONO emissions snow surfaces Browning Pass Antarctica
2009/1/12
Measured Fluxes of nitrous acid at Browning Pass, Antarctica were very low, despite conditions that are generally understood as favorable for HONO emissions, including: acidic snow surfaces, an abunda...