@article {RN457,
	title = {Concentrations and origins of nitro-polycyclic aromatic hydrocarbons and oxy-polycyclic aromatic hydrocarbons in ambient air in urban and rural areas in northern China},
	journal = {Environmental Pollution},
	volume = {197},
	year = {2015},
	pages = {156-164},
	type = {Journal Article},
	issn = {0269-7491},
	doi = {10.1016/j.envpol.2014.12.019},
	url = {\&lt;Go to ISI\&gt;://WOS:000350921500018},
	author = {Wei Li and Chen Wang and Shen, Huizhong and Su, Shu and Shen, Guofeng and Ye Huang and Zhang, Yanyan and Chen, Yuanchen and Chen, Han and Nan Lin and Zhuo, Shaojie and Zhong, Qirui and Wang, Xilong and Liu, Junfeng and Li, Bengang and Liu, Wenxin and Tao, Shu}
}
