Search Results - "Shen, Hengqing"
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Characterizing summer and winter carbonyl compounds in Beijing atmosphere
Published in Atmospheric environment (1994) (01-10-2019)“…Carbonyl compounds (carbonyls) play important roles in atmospheric photochemistry, serving as reservoirs of radicals (OH, HO2, and RO2) and precursors of…”
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Two-year online measurements of volatile organic compounds (VOCs) at four sites in a Chinese city: Significant impact of petrochemical industry
Published in The Science of the total environment (01-02-2023)“…Volatile organic compounds (VOCs) management has been recently given a high priority in China to mitigate ozone (O3) air pollution. However, there is a…”
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3
Partitioning of hydrogen peroxide in gas-liquid and gas-aerosol phases
Published in Atmospheric chemistry and physics (12-05-2020)“…Hydrogen peroxide (H2O2) is a vital oxidant in the atmosphere and plays critical roles in the oxidation chemistry of both liquid and aerosol phases. The…”
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Impacts of heterogeneous reactions to atmospheric peroxides: Observations and budget analysis study
Published in Atmospheric environment (1994) (01-06-2018)“…Atmospheric peroxides play important roles in atmospheric chemistry, acting as reactive oxidants and reservoirs of HOX and ROX radicals. Field measurements of…”
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Investigating the sources of atmospheric nitrous acid (HONO) in the megacity of Beijing, China
Published in The Science of the total environment (15-03-2022)“…Nitrous acid (HONO) can powerfully influence atmospheric photochemistry by producing hydroxyl radical (OH), which is a crucial oxidant that controls the fate…”
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Positive Feedback between Partitioning of Carbonyl Compounds and Particulate Sulfur Formation during Haze Episodes
Published in Environmental science & technology (11-11-2024)“…Carbonyl compounds are important precursors of aqueous aerosols in the atmosphere, while their gas-particle partitioning behaviors and roles in particulate…”
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Gas-Particle Partitioning of Carbonyl Compounds in the Ambient Atmosphere
Published in Environmental science & technology (02-10-2018)“…Despite their crucial roles in health and climate concerns, the gas-particle partitioning of carbonyl compounds is poorly characterized in the ambient…”
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Insight into Generation and Evolution of Sea-Salt Aerosols from Field Measurements in Diversified Marine and Coastal Atmospheres
Published in Scientific reports (25-01-2017)“…This report focuses on studying generation and/or evolution of sea-salt aerosols (SSA) on basis of measurements in the Northwest Pacific Ocean (NWPO), the…”
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Determination of Urban Formaldehyde Emission Ratios in the Shanghai Megacity
Published in Environmental science & technology (31-10-2023)“…We analyzed two data sets of atmospheric formaldehyde (FA) at an urban site in the Shanghai megacity during the summer of 2017 and the winter of 2017/18, with…”
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10
Sound-insulation and photocatalytic foamed concrete prepared with dredged sediment
Published in Journal of cleaner production (01-07-2022)“…Recycling of dredged sediment (DS), derived from the routine dredging operation of rivers, lakes and seas, into construction materials represents an…”
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Formation of peroxyacetyl nitrate (PAN) and its impact on ozone production in the coastal atmosphere of Qingdao, North China
Published in The Science of the total environment (15-07-2021)“…Peroxyacetyl nitrate (PAN), acting as a relatively long-lived reservoir for both NOx and radicals, plays a crucial role in ozone (O3) formation in the…”
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Significance of carbonyl compounds to photochemical ozone formation in a coastal city (Shantou) in eastern China
Published in The Science of the total environment (10-04-2021)“…Carbonyl compounds are ubiquitous in the troposphere, yet their contributions to ambient ozone (O3) formation have rarely been quantified in China. To better…”
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13
Strong marine-derived nitrous acid (HONO) production observed in the coastal atmosphere of northern China
Published in Atmospheric environment (1994) (01-01-2021)“…Despite its important roles in the formation of hydroxyl radical (OH) and ozone (O3), the characteristics and sources of nitrous acid (HONO) in the marine…”
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A quantitative analysis of causes for increasing ozone pollution in Shanghai during the 2022 lockdown and implications for control policy
Published in Atmospheric environment (1994) (01-06-2024)“…Ground-level ozone (O3) pollution is a major air quality issue in densely populated urban areas. Despite a significant decline in human activities in the…”
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15
Double-Edged Role of VOCs Reduction in Nitrate Formation: Insights from Observations during the China International Import Expo 2018
Published in Environmental science & technology (24-10-2023)“…Aerosol nitrate (NO3 –) constitutes a significant component of fine particles in China. Prioritizing the control of volatile organic compounds (VOCs) is a…”
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Nitrous acid in the polluted coastal atmosphere of the South China Sea: Ship emissions, budgets, and impacts
Published in The Science of the total environment (20-06-2022)“…Nitrous acid (HONO) can significantly contribute to hydroxyl radicals (OH) and thus regulate atmospheric oxidation chemistry; however, ambient HONO sources are…”
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Carbonyl Compounds Regulate Atmospheric Oxidation Capacity and Particulate Sulfur Chemistry in the Coastal Atmosphere
Published in Environmental science & technology (01-10-2024)“…Carbonyl compounds play a crucial role in the formation of ozone (O3) and secondary aerosols, with recent studies particularly highlighting formaldehyde (HCHO)…”
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Marine sources of formaldehyde in the coastal atmosphere
Published in Science bulletin (Beijing) (20-09-2024)“…[Display omitted] Elevated concentrations of formaldehyde and other carbonyl compounds are frequently observed in the marine atmosphere but are often…”
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The OH-initiated oxidation of atmospheric peroxyacetic acid: Experimental and model studies
Published in Atmospheric environment (1994) (01-09-2017)“…Peroxyacetic acid (PAA, CH3C(O)OOH) plays an important role in atmospheric chemistry, serving as reactive oxidant and affecting radical recycling. However,…”
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Insights into atmospheric trace gases, aerosols, and transport processes at a high-altitude station (2623 m a.s.l.) in Northeast Asia
Published in Atmospheric environment (1994) (01-06-2024)“…As part of the efforts to understand long-range air pollution transport in Northeast Asia, a comprehensive field measurement campaign was conducted at the top…”
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