title: Historical record of metal accumulation and lead source in the southeastern coastal region of Korea.
abstract: Concentrations of heavy metals and Pb isotopes were measured in the 1-M HCl leaching fraction of core sediments spanning the last 400 years. This sedimentary record of pollution history in metal concentrations shows a good correlation with the increases in industrialization, urbanization, and energy consumption since 1901s. Notably, the Pb concentration and the (207)Pb/(206)Pb and (208)Pb/(206)Pb ratios were constant before the 1910s (16.7 μg/g, 0.844, and 2.098, respectively), whereas they increased steadily up to 21.9 μg/g, 0.848, and 2.101 after the 1910s. The correlations between Pb isotope ratios ((206)Pb, (207)Pb, and (208)Pb) showed different linear regression trends for core sediments before and after the 1910s, indicating differences in Pb sources. Our interpretation suggests that the source of anthropogenic Pb in Korean coastal region and the Yellow Sea shelf was presumed to be Chinese coals or ores, which have also played a major role as sources of atmospheric particulate Pb.
authors.affiliation: Library of Marine Samples (LIMS), South Sea Research Institute, Korea Institute of Ocean Science and Technology, Geoje 656-830, Republic of Korea.
authors.forename: Dhong-il
authors.initials: DI
authors.lastname: Lim
authors.forename: Seung Woon
authors.initials: SW
authors.lastname: Jung
authors.forename: Man Sik
authors.initials: MS
authors.lastname: Choi
authors.forename: Sun Mee
authors.initials: SM
authors.lastname: Kang
authors.forename: Hoi Soo
authors.initials: HS
authors.lastname: Jung
authors.forename: Jin Yong
authors.initials: JY
authors.lastname: Choi
mesh_terms: D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry; D007854:Lead / Q000032:analysis; D008670:Metals / Q000032:analysis*; D056910:Republic of Korea; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data*
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical; D007854:Lead
keywords: Atmospheric dust; Coastal sediments; Pb isotope ratios; Pollution history