The lead content and isotopic composition of british coals and their implications for past and present releases of lead to the uk environment

摘要

More than 60 coal samples, predominantly from the principal coalfields of England and Wales (25) and Scotland (30), were analysed for lead by AAS and for stable lead isotopes by ICP-MS. While the average lead content of Scottish coal, 23.9 mg kg~-1, was more than double that of coal From England and Wales, 11.0 mg kg~-1, the corresponding mean ~206Pb/~207Pb ratios (±1 s.d.) were Nearly identical, at 1.181±0.011 and 1.184±0.006, respectively.