Tracing the origin of Pb using stable Pb isotopes in surface sediments along the Korean Yellow Sea coast
作者： Jong-Kyu Park , Man-Sik Choi , Yunho Song , Dhong-Il Lim
DOI: 10.1007/S12601-017-0020-9
关键词:
摘要: To investigate the factors controlling lead (Pb) concentration and identify sources of Pb in Yellow Sea sediments along Korean coast, isotopes 87 surface 6 core sediment samples were analyzed. The 1 M HCl leached concentrations had a similar geographic distribution to those fine-grained sediments, while residual resembled that coarse-grained sediments. Leached was presumed be associated with manganese (Mn) oxide iron (Fe) oxy/hydroxide, potassium (K)-feldspar, based on good linear relationships between Fe/Mn concentrations, K concentrations. Based ratio–ratio plot three (207Pb/206Pb 208Pb/206Pb) location each sediment, categorized into two groups as group1 group2. Group which distributed Gyeonggi Bay offshore (north 36.5°N), determined mixture anthropogenic natural originating from Han River, 208Pb/206Pb against Cs/Pbleached mixing 2 south 36.5°N, also showed endmembers relationship materials Geum River materials, very different isotope ratios. their this interpreted geographically origins being mixed, rather than or same origin. Therefore, relative percentage supplied calculated using model estimated much about 50% at 35°N. spatial derived represented River. It concluded could used tracer studies origin coast.
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