4.5 Article

Insight into Source and Evolution of Oxalic Acid: Characterization of Particulate Organic Diacids in a Mega-City, Shanghai from 2008 to 2020

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Environmental Sciences

Observation-based sources evolution of non-methane hydrocarbons (NMHCs) in a megacity of China

Yarong Peng et al.

Summary: China has implemented control measures to reduce concentrations and emissions of air pollutants. However, an increase in emissions of non-methane hydrocarbons (NMHCs) has been reported. This study in Shanghai, China, explored the evolution of NMHCs emissions and the effectiveness of air pollution control measures. The results showed changes in the composition of NMHCs and a decreasing trend in ozone formation potential. Vehicular emissions and petrochemical industry emissions decreased significantly, while solvent usage decreased after 2010. However, emissions of natural gas and fuel evaporation became more important. The study emphasizes the need for further validation of NMHCs emission inventories.

JOURNAL OF ENVIRONMENTAL SCIENCES (2023)

Review Environmental Sciences

A critical review of sulfate aerosol formation mechanisms during winter polluted periods

Can Ye et al.

Summary: Sulfate aerosol has a significant impact on particulate matter pollution, human health, and climate change. Atmospheric models underestimate sulfate concentrations during haze episodes, indicating missing mechanisms. Despite progress in understanding sulfate sources, there are uncertainties in formation pathways during polluted periods, calling for more research. This review summarizes traditional sulfate formation mechanisms and discusses factors affecting multiphase S(IV) oxidation. It proposes controlling atmospheric oxidation capacity to mitigate sulfate aerosol pollution and provides research priorities for improving our understanding of sulfate formation mechanisms.

JOURNAL OF ENVIRONMENTAL SCIENCES (2023)

Article Meteorology & Atmospheric Sciences

Atmospheric Chemistry of Oxalate: Insight Into the Role of Relative Humidity and Aerosol Acidity From High-Resolution Observation

Chi Yang et al.

Summary: This study analyzed the effects of typical atmospheric oxidants at different relative humidity (RH) and pH on oxalates in atmospheric particulates based on high-resolution online observation. The results showed that O-3, OX (=O-3 + NO2), and Cl- have significant influences on the oxalate level, with a greater impact at higher humidity (30% < RH <= 80%). NO2 and HONO also affect oxalates, while atmospheric oxidants from dust particles have minimal effect. Furthermore, the influence of pH on atmospheric oxalate differs between winter and summer at RH > 80%.

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2022)

Article Environmental Sciences

Neglected biomass burning emissions of air pollutants in China-views from the corncob burning test, emission estimation, and simulations

Jian Wu et al.

Summary: This study measured the emission factors of corncob burning and estimated its emissions through field surveys and simulation. It found that corncob burning in China produces significant emissions, which have been underestimated in previous studies that did not consider corncob burning. These findings highlight the importance of corncob burning in biomass burning and can help improve future estimation and modeling of biomass burning emissions.

ATMOSPHERIC ENVIRONMENT (2022)

Article Environmental Sciences

Characteristics of aerosol chemistry and acidity in Shanghai after PM2.5 satisfied national guideline: Insight into future emission control

Zhenghang Fu et al.

Summary: With continuous efforts to control air pollutant emissions, the average concentration of PM2.5 in Shanghai met the national secondary standard for the first time. The study found that sulfate pollution was significantly reduced while nitrate loading remained constant. The contribution of automobile exhaust to PM2.5 was seasonally dependent. The rapid increase of nitrate has become a major driver of haze formation.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

Article Geosciences, Multidisciplinary

Particulate Oxalate-To-Sulfate Ratio as an Aqueous Processing Marker: Similarity Across Field Campaigns and Limitations

Miguel Ricardo A. Hilario et al.

Summary: This study utilized aerosol data from various field campaigns to calculate the statistics of the oxalate-sulfate mass ratio, showing that dust and biomass burning emissions can bias this ratio towards higher values.

GEOPHYSICAL RESEARCH LETTERS (2021)

Article Environmental Sciences

Enhanced photochemical formation of secondary organic aerosols during the COVID-19 lockdown in Northern China

Jingjing Meng et al.

Summary: The Chinese government's nationwide lockdown policy implemented in 2020 to combat the spread of COVID-19 resulted in a significant reduction in air pollutant emissions. The study on aerosol chemistry during the lockdown period showed changes in the number fraction, size distribution, and formation process of C-2 particles and its precursors, largely influenced by aerosol acidity and O3 concentration.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Environmental Sciences

Temporal trends of the concentration and sources of secondary organic aerosols in PM2.5 in Shanghai during 2012 and 2018

Yan Zhong et al.

Summary: This study examined the temporal trends and potential sources of secondary organic aerosols in PM2.5 in Shanghai based on samples collected from 2012 to 2018. The concentrations of organic carbon, elemental carbon, and water-soluble organic carbon all decreased along with PM2.5 concentration, while the contribution of secondary organic carbon to organic carbon was increasing. Anthropogenic aromatic volatile organic compounds were identified as important contributors to secondary organic carbon in PM2.5.

ATMOSPHERIC ENVIRONMENT (2021)

Article Environmental Sciences

The enhanced mixing states of oxalate with metals in single particles in Guangzhou, China

Haifeng Gong et al.

Summary: The study revealed the significant enrichment of oxalate in metal-containing particles, with enhanced oxalate production in Fe- and V-containing particles. The internal mixing of oxalate with metals provides an efficient way for the photolysis of oxalate-metal complexes, leading to a decrease in oxalate after sunrise in the particles. Metals play an important role in the production and degradation of oxalate, providing insights for the evaluation of metals in the formation processes of organic aerosol in field studies.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Chemistry, Multidisciplinary

The Mechanisms Responsible for the Interactions among Oxalate, pH, and Fe Dissolution in PM2.5

Ye Tao et al.

ACS EARTH AND SPACE CHEMISTRY (2019)

Article Engineering, Environmental

Oxalate Formation Enhanced by Fe-Containing Particles and Environmental Implications

Guohua Zhang et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2019)

Article Green & Sustainable Science & Technology

Emission characterization, environmental impact, and control measure of PM2.5 emitted from agricultural crop residue burning in China

Hefeng Zhang et al.

JOURNAL OF CLEANER PRODUCTION (2017)

Article Environmental Sciences

PM2.5 emissions and source profiles from open burning of crop residues

Haiyan Ni et al.

ATMOSPHERIC ENVIRONMENT (2017)

Article Meteorology & Atmospheric Sciences

Sources and atmospheric processes impacting oxalate at a suburban coastal site in Hong Kong: Insights inferred from 1year hourly measurements

Yang Zhou et al.

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2015)

Article Meteorology & Atmospheric Sciences

Biogenic and anthropogenic sources of oxalate in PM2.5 in a mega city, Shanghai

Fan Yang et al.

ATMOSPHERIC RESEARCH (2014)

Article Environmental Sciences

Hygroscopic properties of oxalic acid and atmospherically relevant oxalates

Qingxin Ma et al.

ATMOSPHERIC ENVIRONMENT (2013)

Article Meteorology & Atmospheric Sciences

Source and formation of secondary particulate matter in PM2.5 in Asian continental outflow

J. L. Feng et al.

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2012)

Article Environmental Sciences

Emission inventory of anthropogenic air pollutants and VOC species in the Yangtze River Delta region, China

C. Huang et al.

ATMOSPHERIC CHEMISTRY AND PHYSICS (2011)

Article Environmental Sciences

Composition, source, mass closure of PM2.5 aerosols for four forests in eastern China

Li Li et al.

JOURNAL OF ENVIRONMENTAL SCIENCES (2010)

Article Meteorology & Atmospheric Sciences

High time-resolution chemical characterization of the water-soluble fraction of ambient aerosols with PILS-TOC-IC and AMS

H. Timonen et al.

ATMOSPHERIC MEASUREMENT TECHNIQUES (2010)

Article Meteorology & Atmospheric Sciences

Dicarboxylic acids and water-soluble organic carbon in aerosols in New Delhi, India, in winter: Characteristics and formation processes

Yuzo Miyazaki et al.

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2009)

Article Meteorology & Atmospheric Sciences

Carbonaceous aerosol at two rural locations in New York State: Characterization and behavior

Ramya Sunder Raman et al.

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2008)

Article Meteorology & Atmospheric Sciences

A study of secondary organic aerosol formation in the anthropogenic-influenced southeastern United States

Rodney J. Weber et al.

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2007)

Article Environmental Sciences

Atmospheric production of oxalic acid/oxalate and nitric acid/nitrate in the Tampa Bay airshed: Parallel pathways

P. Kalyani Martinelango et al.

ATMOSPHERIC ENVIRONMENT (2007)

Article Meteorology & Atmospheric Sciences

Oxygenated and water-soluble organic aerosols in Tokyo

Y. Kondo et al.

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2007)

Article Environmental Sciences

Source profiles of particulate organic matters emitted from cereal straw burnings

Zhang Yuan-xun et al.

JOURNAL OF ENVIRONMENTAL SCIENCES (2007)

Article Meteorology & Atmospheric Sciences

Water-soluble organic carbon and oxalate in aerosols at a coastal urban site in China: Size distribution characteristics, sources, and formation mechanisms

Xiao-Feng Huang et al.

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2006)

Article Engineering, Environmental

When aerosol sulfate goes up, so does oxalate: Implication for the formation mechanisms of oxalate

JZ Yu et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2005)

Article Multidisciplinary Sciences

Formation of secondary organic aerosols through photooxidation of isoprene

M Claeys et al.

SCIENCE (2004)

Article Multidisciplinary Sciences

Atmospheric new particle formation enhanced by organic acids

RY Zhang et al.

SCIENCE (2004)

Article Environmental Sciences

Concentration and chemical composition of PM2.5 in Shanghai for a 1-year period

BM Ye et al.

ATMOSPHERIC ENVIRONMENT (2003)

Article Environmental Sciences

Size distributions and formation of dicarboxylic acids in atmospheric particles

XH Yao et al.

ATMOSPHERIC ENVIRONMENT (2002)