Identifying the sources and timing of ancient and medieval atmospheric lead pollution in England using a peat profile from Lindow bog, Manchester
作者： Gaël Le Roux , Dominik Weiss , John Grattan , Nicolas Givelet , Michael Krachler
DOI: 10.1039/B401500B
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摘要: A peat core from Lindow bog near Manchester, England, was precisely cut into 2 cm slices to provide a high-resolution reconstruction of atmospheric Pb deposition. Radiocarbon and 210Pb age dates show that the represents period ca. 2000 BC AD 1800. Eleven radiocarbon bulk samples reveal linear age–depth relationship with an average temporal resolution 18.5 years per cm, or 37 sample. Using Pb/Ti ratio calculate rates anthropogenic, deposition, profile reveals contamination first appearing in dating 900 which clearly pre-date Roman mining activities. TIMS, MC-ICP-MS, SF-ICP-MS measure isotopic composition Pb, 208Pb/206Pb 206Pb/207Pb data indicate English ores were predominant sources during pre-Roman, Roman, Medieval Periods. The study shows detailed studies profiles ombrotrophic bogs, using appropriate preparatory analytical methods, can new insight timing, intensity, contamination, even ancient times.
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