title: Source apportionment of polycyclic aromatic hydrocarbons (PAHs) in surface sediments of the Rizhao coastal area (China) using diagnostic ratios and factor analysis with nonnegative constraints.
abstract: In this study, sources of polycyclic aromatic hydrocarbons (PAHs) found in surface sediments of the Rizhao coastal area (China) were apportioned using diagnostic ratios and factor analysis with nonnegative constraints (FA-NNC). Bivariate plots of selected diagnostic ratios showed that the sources of PAHs identified in surface sediments seemed to be mixed sources dominated by petroleum-related. Literature PAH source profiles were modified based on the first-order degradation reaction in the atmosphere and sediments, and were considered as comparison for source identification. Five significant factors were determined with the diagnostic tools including coefficient of determination, cumulative percent variance and Exner function. By visually comparing PAH patterns and from the sum of squares of differences between modeled and modified literature PAH profiles, the potential sources were apportioned with the FA-NNC. The main contribution sources of PAHs originated from diesel engine (27.22%), followed by traffic emission (25.03%), gasoline engine (18.95%), coal power plant (14.77%) and coal residential (14.03%). Energy consumption was the predominant reason for PAH pollution in that region.
authors: College of Water Science, Beijing Normal University, No 19, Xinjiekouwai Street, Beijing 100875, China.
authors: Hai-yang
authors: HY
authors: Chen
authors: Yan-guo
authors: YG
authors: Teng
authors: Jin-sheng
authors: JS
authors: Wang
mesh_terms: D002681:China; D003198:Computer Simulation; D004784:Environmental Monitoring / Q000379:methods / Q000706:statistics & numerical data*; D005163:Factor Analysis, Statistical; D019015:Geologic Sediments / Q000737:chemistry*; D008956:Models, Chemical; D009010:Monte Carlo Method; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D001335:Vehicle Emissions / Q000032:analysis*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D001335:Vehicle Emissions