Haze insights and mitigation in China： An overview

• Published in: Journal of environmental sciences (China) Vol. 26; no. 1; pp. 2 - 12
• Main Authors: Zhuang, Xuliang, Wang, Yuesi, He, Hong, Liu, Jianguo, Wang, Xinming, Zhu, Tingyu, Ge, Maofa, Zhou, Ju, Tang, Guiqian, Ma, Jinzhu
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 2014
• Subjects: Air Pollution - analysis; Air Pollution - prevention & control; chemical composition; China; Environmental Monitoring - instrumentation; haze; particles; Particulate Matter - analysis; Particulate Matter - chemistry; Particulate Matter - standards; secondary aerosols; size distribution; 中国; 化学成分; 控制技术; 测量分析; 灰霾; 物理特性; 细颗粒; 老化过程; China; China, People's Rep; secondary aerosols; haze; particles; chemical composition; size distribution
• ISSN: 1001-0742; 1878-7320
• DOI: 10.1016/S1001-0742(13)60376-9

The present article provides an overview of the chemical and physical features of haze in China, focusing on the relationship between haze and atmospheric fine particles, and the formation mechanism of haze. It also summarizes several of control technologies and strategies to mitigate the occurrence of haze. The development of instruments and the analysis of measurements of ambient particles and precursor concentrations have provided important information about haze formation. Indeed, the use of new instruments has greatly facilitated current haze research in China. Examples of insightful results include the relationship between fine particles and haze, the chemical compositions and sources of particles, the impacts of the aging process on haze formation, and the application of technologies that control the formation of haze. Based on these results, two relevant issues need to be addressed： understanding the relationship between haze and fine particles and understanding how to control PM2.5.