Catalysis Today, Год журнала: 2024, Номер 433, С. 114690 - 114690
Опубликована: Апрель 4, 2024
Язык: Английский
CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Год журнала: 2024, Номер 61, С. 71 - 96
Опубликована: Июнь 1, 2024
Язык: Английский
Процитировано
21
The Science of The Total Environment, Год журнала: 2022, Номер 841, С. 156482 - 156482
Опубликована: Июнь 4, 2022
Язык: Английский
Процитировано
48
Environmental Science & Technology, Год журнала: 2022, Номер 57(1), С. 109 - 117
Опубликована: Дек. 28, 2022
Increasing surface ozone (O3) concentrations has emerged as a key air pollution problem in many urban regions worldwide the last decade. A longstanding major issue tackling is identification of O3 formation regime and its sensitivity to precursor emissions. In this work, we propose new transformed empirical kinetic modeling approach (EKMA) diagnose using regulatory NO2 observation datasets, which are easily accessible. We demonstrate that mapping monitored data on modeled regional O3–NO2 relationship diagram can illustrate historical evolution precursors region. By applying approach, show for most China, currently associated with volatile organic compound (VOC)-limited regime, located within zone daytime-produced (DPO3) an 8h-NO2 concentration ratio below 8.3 ([DPO3]/[8h-NO2] ≤ 8.3). The production controlling effects VOCs NOx different cities China were compared according their routes. developed herein may have broad application potential evaluating efficiency controls further mitigating pollution, particular, where comprehensive photochemical studies unavailable.
Язык: Английский
Процитировано
46
The Science of The Total Environment, Год журнала: 2023, Номер 906, С. 167553 - 167553
Опубликована: Окт. 5, 2023
Язык: Английский
Процитировано
40
Environmental Science & Technology, Год журнала: 2023, Номер 57(11), С. 4424 - 4433
Опубликована: Март 10, 2023
A big gap exists between current air quality in China and the World Health Organization (WHO) global guidelines (AQG) released 2021. Previous studies on pollution control have focused emission reduction demand but ignored influence of transboundary pollution, which has been proven to a significant impact China. Here, we develop an emission-concentration response surface model coupled with quantify for achieve WHO AQG. cannot AQG by its own high both PM2.5 O3. Reducing will loosen NH3 VOCs emissions However, meet 10 μg·m-3 60 peak season O3, still needs reduce SO2, NOx, NH3, VOCs, primary more than 95, 76, 62, 96% respectively, basis 2015. We highlight that extreme great efforts addressing are crucial reach
Язык: Английский
Процитировано
30
Journal of Hazardous Materials, Год журнала: 2024, Номер 468, С. 133722 - 133722
Опубликована: Фев. 6, 2024
Язык: Английский
Процитировано
18
Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 345, С. 123696 - 123696
Опубликована: Янв. 2, 2024
Язык: Английский
Процитировано
16
Environmental Research Letters, Год журнала: 2022, Номер 17(12), С. 123001 - 123001
Опубликована: Ноя. 9, 2022
Abstract Since 2013, China has taken a series of actions to relieve serious PM 2.5 pollution. As result, the annual concentration decreased by more than 50% from 2013 2021. However, ozone pollution become pronounced, especially in North Plain. Here, we review impacts anthropogenic emissions, meteorology, and atmospheric processes on ambient loading components O 3 China. The reported influence interannual meteorological changes during 2013–2019 ranged 10%–20% 20%–40%, respectively. During same period, emissions NO x , SO 2 primary NMVOC NH are estimated decrease 38%, 51%, 35%, 11% 17%, Such emission reduction is main cause for across imbalanced reductions various precursors also result variation nitrate gas-particle partitioning hence an increase fraction . enhancement oxidation capacity can have substantial impact secondary which partly explained growth organic aerosols haze events COVID-19 shutdown period. uneven suggested be most important reason rapid after 2013. In addition, may affected formation via radiation effects heterogeneous reactions. Moreover, climate change expected both processes. extent pathways -O interplay how it will impacted changing conditions making synergetic control difficult. Further research interaction needed provide basis scientifically-grounded effective co-control strategy.
Язык: Английский
Процитировано
38
Environmental Science & Technology, Год журнала: 2022, Номер 56(19), С. 13654 - 13663
Опубликована: Сен. 22, 2022
China is facing dual pressures to reduce both PM2.5 and O3 pollution, the crucial precursors of which are NOx VOCs. In our study, role in secondary organic aerosol (SOA, important constituent PM2.5) formation was examined 30 m3 indoor smog chamber. As revealed present level can obviously affect OH concentration volatility distribution gas-phase oxidation products thus SOA formation. Reducing NOx-sensitive regime inhibit (by 42%), resulting reduction capacity, suppresses 45%) by inhibiting O- N-containing with low volatility. The contribution these also estimated, results could substantially support trend yield at different VOC levels. atmospheric implications coordinated control discussed.
Язык: Английский
Процитировано
33
Environmental Pollution, Год журнала: 2022, Номер 316, С. 120685 - 120685
Опубликована: Ноя. 16, 2022
Язык: Английский
Процитировано
32