The risk analysis of polycyclic aromatic hydrocarbons in topsoil of suburbs of Hangzhou
YU Guoguang, YE Xuezhu, ZHAO Shouping, ZHANG Yongzhi, ZHANG Qi, WANG Gangjun
Ecology and Environment . 2011, (5): 966 -969 .  DOI: 10.16258/j.cnki.1674-5906(2011)05-0966-04