Library of Marine Samples (LIMS), South Sea Research Institute, Korea Institute of Ocean Science and Technology, Geoje 656-830, Republic of Korea.
Mar Pollut Bull. 2013 Sep 15;74(1):441-5. doi: 10.1016/j.marpolbul.2013.06.018. Epub 2013 Jul 6.
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.
对过去 400 年来跨越核心沉积物的 1-M HCl 浸出部分中的重金属和 Pb 同位素浓度进行了测量。该污染历史的沉积物记录表明，金属浓度与自 1901 年代以来的工业化、城市化和能源消耗的增加密切相关。值得注意的是，在 1910 年代之前，Pb 浓度和 (207)Pb/(206)Pb 和 (208)Pb/(206)Pb 比值保持不变（分别为 16.7μg/g、0.844 和 2.098），而在 1910 年代之后，它们分别稳定增加到 21.9μg/g、0.848 和 2.101。Pb 同位素比值（(206)Pb、(207)Pb 和 (208)Pb）之间的相关性在 1910 年代之前和之后的核心沉积物中表现出不同的线性回归趋势，表明 Pb 来源存在差异。我们的解释表明，韩国沿海地区和黄海陆架人为 Pb 的来源被认为是中国的煤或矿石，它们也在大气颗粒态 Pb 的来源中发挥了重要作用。
