title: Trace elements distribution and ecological risk assessment of seawater and sediments from Dingzi Bay, Shandong Peninsula, North China.
abstract: Selected trace elements (Hg, As, Pb, Cu, Cd, Cr and Zn) in seawater and sediments from Dingzi Bay, a semi-enclosed bay suffering from severe degradation located in the Shandong Peninsula, were investigated to evaluate the spatial distribution and potential ecological risk. Results indicated that higher concentrations occurred in the inner bay. Calculation of pollution load index (PLI) showed overall low values while the concentration factor (CF) indicated that Hg, As and Cd were at moderate risk levels in the region. Based on the effects-range classification, As was likely to pose environment risk. Principal component analysis (PCA) revealed that in addition to background contributions, the trace elements contamination could also be affected by anthropogenic pollution sources. The results of present study provide useful background information for further marine investigation and management in the region.
authors.affiliation: Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, PR China.
authors.forename: Jingjin
authors.initials: J
authors.lastname: Pan
authors.affiliation: Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, PR China. Electronic address: jfpan@ouc.edu.cn.
authors.forename: Jin-Fen
authors.initials: JF
authors.lastname: Pan
authors.affiliation: Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, PR China.
authors.forename: Min
authors.initials: M
authors.lastname: Wang
mesh_terms: D059001:Aquatic Organisms / Q000187:drug effects; D061006:Bays; D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000032:analysis*; D025341:Principal Component Analysis; D018570:Risk Assessment; D012623:Seawater / Q000032:analysis*; D014131:Trace Elements / Q000032:analysis* / Q000633:toxicity; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000633:toxicity
chemical_list: D014131:Trace Elements; D014874:Water Pollutants, Chemical
keywords: Dingzi Bay; Pollution load index; Principal component analysis; Seawater; Sediments; Trace elements