Blood Lead Concentrations in Marine Mammals Validate Estimates of 102- to 103-fold Increase in Human Blood Lead Concentrations
作者： Benjamin D. Owen , A.Russell Flegal
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摘要: Measurements of ultra-low ambient blood lead (PbB) concentrations (mean +/- SD = 0.13 0.06 micrograms/dL) in Northern elephant seal (Mirounga angustirostris) validate previous estimates PbB levels preindustrial humans. These had been unsubstantiated, since this range never measured any organisms prior to study. Similarities among these contemporary and mammals are consistent with similarities their estimated exposures, respectively. The marginally higher rates exposure marine are, also, isotopic composition analyses that indicate have elevated from industrial lead. Consequently, substantiate concerns current baseline humans, which be two three orders magnitude above natural levels, may still constitute public health risks.
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