Details

Autor(en) / Beteiligte

• Chen, Shaobo
• He, Youjiang
• Jiang, Mengyun
• You, Qian
• Ma, Xiaotian
• Xu, Zhongjun
• Bo, Xin

Titel

Unveiling the importance of VOCs from pesticides applicated in main crops for elevating ozone concentrations in China

Ist Teil von

• Journal of hazardous materials, 2024-03, Vol.465, p.133385-133385, Article 133385

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Volatile organic compounds (VOCs) are considered as important precursors of ozone in the air, while the contribution of VOCs from pesticide application (PVOCs) to ozone production is unknown. Utilizing data from the Ministry of Agriculture and Rural Affairs of the People's Republic of China and ChinaCropPhen1km, this paper developed PVOC emission inventories with a resolution of 1 km for the main crops (rice, maize, and wheat) from 2012 to 2019 in China. The results revealed that pesticide application is an important VOC emission source in China. Specially, the PVOC emissions from the major grain-producing regions in June accounted for approximately 30% of the annual total PVOC emissions in the local regions. The simulation with the Weather Research and Forecasting Community Multiscale Air Quality model (WRF-CMAQ) indicated that the PVOC emissions increased the mean maximum daily 8-hour average (MDA8) ozone concentration across China by 2.5 ppb in June 2019. During the same period, PVOCs in the parts of North China Plain contributed 10% of the ozone formation. Under the comprehensive emission reduction scenario, it is anticipated that by 2025, the joint implementation of measures including reducing pesticide application, improving pesticide utilization efficiency and promoting solvent substitution will decrease PVOC emissions by 60% compared with 2019, thereby mitigating ozone pollution. [Display omitted] •PVOC emissions across China in June 2019 accounted for ca. 30% of its annual emissions.•PVOCs in the parts of North China Plain contributed 10% of the ozone formation.•The reduction of PVOC emissions helps to control ozone pollution in China.