Hygroscopicity and Cloud Condensation Nuclei Activity of Fresh and Aged Biomass Burning Particles [0.03%]
Bin Bai,Aishwarya Singh,Tianchang Xu et al.
Bin Bai et al.
Biomass burning (BB) is a major source of atmospheric particles and trace gases, influencing climate change, air quality, and human health. During the Georgia Wildland-Fire Simulation Experiment, we measured the hygroscopicity (κ) and size...
Evaluating a Land Use Regression Model for Estimating Metals in Fine Particulate Matter across the Denver Metro Area: The Healthy Start Study [0.03%]
Anne Mielnik,Sheena E Martenies,Christian L&#x;Orange et al.
Anne Mielnik et al.
Few studies examine health effects of metals in ambient fine particulate matter (PM2.5), as measurements of elemental composition are sparse. To facilitate intraurban studies in Denver, Colorado, we developed land use regression models for ...
The complex effects of reduced mobile source emissions on submicron particulate matter concentrations in Los Angeles [0.03%]
移动源减排对洛杉矶亚微米颗粒物浓度的复杂影响
Benjamin C Schulze,Christopher M Kenseth,Ryan X Ward et al.
Benjamin C Schulze et al.
Despite considerable reductions in mobile source emissions, annual average aerosol concentrations measured in Los Angeles using Federal Reference Methods (FRM) have not appreciably declined over the last decade. Here, we use submicron aeros...
Formation of Perfluorocarboxylic Acids from the Incomplete Thermal Decomposition of Perfluorooctanesulfonic Acid and Perfluorooctanoic Acid [0.03%]
全氟辛烷磺酸和全氟辛酸热解不完全产生全氟羧酸类化合物
Nathan H Weber,Jonathan D Krug,William R Roberson et al.
Nathan H Weber et al.
Two solutions containing ~500 mg/L of perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) were atomized at two post-flame locations within a natural gas-fired pilot-scale combustor with peak temperatures of ~860 °C and ~7...
Evaluation of Smoke Exposure Risk from January 2025 Los Angeles Wildfires Using Crowdsourced Data [0.03%]
利用 crowdsourced 数据评估 2025 年 1 月洛杉矶野火的烟雾暴露风险
Yi Ji,Christopher Devlin,Cesunica E Ivey
Yi Ji
Wildfire smoke is an increasingly significant contributor to air pollution in the western United States, posing serious health risks and complicating efforts to assess personal exposure, particularly indoors. The January 2025 Palisades and ...
Comparative Impacts of Freight and Non-truck Traffic on NO x and Ozone Concentrations in the Los Angeles Basin [0.03%]
洛杉矶盆地货物运输与非道路运输对NO_x和O_3浓度影响的比较研究
Aryiana C Moore,T Nash Skipper,Armistead G Russell et al.
Aryiana C Moore et al.
The Los Angeles (LA) metropolitan region remains in nonattainment for ozone despite decades of reductions of ozone precursors, nitrogen oxides (NO x ) and volatile organic compounds (VOCs). NO x emissions from freight vehicles (ships, heavy...
W Joe F Acton,Vipul Lalchandani,Mao Du et al.
W Joe F Acton et al.
Large scale sporting and cultural events attract many spectators to a single site, leading to changed emissions and potentially creating local air pollution hot spots. Here, we monitored the air quality during the Birmingham 2022 Commonweal...
Enhancing Estimation of Fine Particulate Matter Chemical Composition across North America by Including Geophysical A Priori Information in Deep Learning with Uncertainty Quantification [0.03%]
基于不确定性量化和物理先验信息的深度学习模式优化北美洲细颗粒物化学组分浓度估算能力研究
Siyuan Shen,Aaron van Donkelaar,Nathan Jacobs et al.
Siyuan Shen et al.
Exposure to fine particulate matter (PM2.5) in ambient air is recognized as the leading environmental risk factor for mortality. A more comprehensive characterization of its chemical composition is needed for its management and health effec...
Quantification of Volatile Organic Compounds (VOCs), Nitrogen Oxides (NO x ), and Ultrafine Particles (UFPs) Emitted by Domestic Air Fryers: A Chamber Study of Indoor Air Quality Impacts [0.03%]
家用空气炸锅排放的挥发性有机化合物(VOCs)、氮氧化物(NOx)和超细颗粒物(UFPs)的量化：室内空气质量影响箱式研究
Ruijie Tang,Yizhou Su,William Joe F Acton et al.
Ruijie Tang et al.
Air frying has emerged as a popular low-oil cooking method, yet its impact on indoor air pollutant emissions remains insufficiently understood. In our study, emissions of volatile organic compounds (VOCs), nitrogen oxides (NO x ), and ultra...
Personal and In-Home Exposures to Airborne Organophosphate Pesticides among Rural Residents of California's Central Valley [0.03%]
加州中央谷地农村居民居家及家庭环境中的有机磷农药空气暴露状况
Jessica Tryner,Grant Erlandson,Sherry WeMott et al.
Jessica Tryner et al.
Residents of agricultural communities may experience higher exposures to pesticides due to their proximity to agricultural operations. We applied a novel measurement approach, using Ultrasonic Personal Air Samplers (UPAS), to quantify parti...