Environmental Science and Pollution Research

, Volume 23, Issue 21, pp 21165–21175

A review on recent progress in observations, sources, classification and regulations of PM2.5 in Asian environments

  • Sneha Gautam
  • Ankit Yadav
  • Chuen-Jinn Tsai
  • Prashant Kumar
Review Article

DOI: 10.1007/s11356-016-7515-2

Cite this article as:
Gautam, S., Yadav, A., Tsai, CJ. et al. Environ Sci Pollut Res (2016) 23: 21165. doi:10.1007/s11356-016-7515-2

Abstract

Natural and human activities generate a significant amount of PM2.5 (particles ≤2.5 μm in aerodynamic diameter) into the surrounding atmospheric environments. Because of their small size, they can remain suspended for a relatively longer time in the air than coarse particles and thus can travel long distances in the atmosphere. PM2.5 is one of the key indicators of pollution and known to cause numerous types of respiratory and lung-related diseases. Due to poor implementation of regulations and a time lag in introducing the vehicle technology, levels of PM2.5 in most Asian cities are much worse than those in European environments. Dedicated reviews on understanding the characteristics of PM2.5 in Asian urban environments are currently missing but much needed. In order to fill the existing gaps in the literature, the aim of this review article is to describe dominating sources and their classification, followed by current status and health impact of PM2.5, in Asian countries. Further objectives include a critical synthesis of the topics such as secondary and tertiary aerosol formation, chemical composition, monitoring and modelling methods, source apportionment, emissions and exposure impacts. The review concludes with the synthesis of regulatory guidelines and future perspectives for PM2.5 in Asian countries. A critical synthesis of literature suggests a lack of exposure and monitoring studies to inform personal exposure in the household and rural areas of Asian environments.

Keywords

PM2.5 Asian environment Human health impact Air pollution exposure 

Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Sneha Gautam
    • 1
  • Ankit Yadav
    • 2
  • Chuen-Jinn Tsai
    • 1
  • Prashant Kumar
    • 3
    • 4
  1. 1.Institute of Environmental EngineeringNational Chiao Tung UniversityHsinchuTaiwan
  2. 2.The INCLEN Trust InternationalNew DelhiIndia
  3. 3.Department of Civil and Environmental Engineering, Faculty of Engineering and Physical SciencesUniversity of SurreyGuildfordUK
  4. 4.Environmental Flow (EnFlo) Research Centre, Faculty of Engineering and Physical SciencesUniversity of SurreyGuildfordUK

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