Isotopic ratio based source apportionment of children's blood lead around coking plant area

The figure shows the 208Pb/206Pb versus 207Pb/206Pb ratios in the children's blood, environmental media, coal combustion fly ash and coal. The lead isotope ratios in the children's blood exhibited little variation, with some exceptions. Most of the points were contained in the scope of lead isotope ratios of coal and coal combustion fly ash from Shanxi Province.