Urban air quality management in Xi'an

Huang RJ Zhang YL Bozzetti C Ho KF Cao JJ Han YM Daellenbach KR Slowik JG Platt SM Canonaco F Zotter P Wolf R Pieber SM Bruns EA Crippa M Ciarelli G Piazzalunga A Schwikowski M Abbaszade G Schnelle-Kreis J Zimmermann R An ZS Szidat S Baltensperger U Haddad IE Prevot ASH . High secondary aerosol contribution to particulate pollution during haze events in China. Nature 2014; 514: 218–222.

Cao JJ Shen ZX Chow JC Watson JG Lee SC Tie XX Ho KF Wang GH Han YM . Winter and summer PM_2.5 chemical compositions in fourteen Chinese cities. J Air Waste Manag Assoc 2012; 62: 1214–1226.

Cao JJ . PM_2.5 and environment, Beijing, China: Science Press, 2014, pp. 1–427.

Zhang XY Cao JJ Li LM Arimoto R Cheng Y Huebert B Wang D . Characterization of atmospheric aerosol over Xi'an in the south margin of the Loess Plateau, China. Atmos Environ 2002; 36: 4189–4199.

GB 17930-2013. National Standard of the People’s Republic of China: unleaded gasoline for motor vehicles, Beijing: China Standards Press, 2013.

GB 19147-2013. National Standard of the People’s Republic of China: automobile diesel (IV), Beijing: China Standards Press, 2013.

GB 13223-2011. National Standard of the People’s Republic of China: emission standard of air pollutants for thermal power plants, Beijing: China Standards Press, 2012.