title: The sedimentary fluxes of polycyclic aromatic hydrocarbons in the Yangtze River Estuary coastal sea for the past century.
abstract: Polycyclic aromatic hydrocarbons (PAHs) in two (210)Pb dated sediment cores from the coastal East China Sea, strongly influenced by the discharge from the Yangtze River, were determined to help to reconstruct the economic development over the past century in East China. The variations in PAH concentrations and fluxes in the sediment cores were primarily due to energy structure change, severe floods and dam construction activities. The impact on PAHs by the river discharge overwhelmed the atmospheric depositions. The profiles of PAH fluxes and concentrations as well as compositions in the cores revealed the transformation from an agricultural economy to an industrial one especially after the 1990s' in the region. PAHs in the study area were dominated by pyrolytic sources.
authors: College of Marine Geosciences, Ocean University of China, Qingdao 266100, China. guozgg@ouc.edu.cn
authors: Zhigang
authors: Z
authors: Guo
authors: Tian
authors: T
authors: Lin
authors: Gan
authors: G
authors: Zhang
authors: Mei
authors: M
authors: Zheng
authors: Zongyan
authors: Z
authors: Zhang
authors: Yunchao
authors: Y
authors: Hao
authors: Ming
authors: M
authors: Fang
mesh_terms: D002681:China; D019015:Geologic Sediments / Q000737:chemistry*; D007856:Lead Radioisotopes / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D011874:Radiometry; D045483:Rivers / Q000737:chemistry*; D014872:Water Movements; D014873:Water Pollutants / Q000032:analysis*; D053833:Wetlands
chemical_list: D007856:Lead Radioisotopes; D011084:Polycyclic Aromatic Hydrocarbons; D014873:Water Pollutants