Distribution of polycyclic aromatic hydrocarbons in the coastal region off Macao, China : Assessment of input sources and transport pathways using compositional analysis - Fu, Jiamo.; Mai, Bixian.; Peng, Pingan.; Qi, Shihua.; Sheng, Guoying.; Wang, Zhishi.; Yang, Qingshu.; Zeng, Eddy Y.; Zhang, Gan.