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Abstract
A pilot study to evaluate the efficacy of using high precision lead isotopes as an indicator of previous lead exposure in children was undertaken on deciduous teeth from 10 children in a lead-mining city. The present study illustrates the applicability of the method and provides data from two subjects who had different exposure to lead during early childhood. Teeth were examined by slicing the crowns into upper and lower sections and/or by selective dissolution with different mineral acids. Different exposures to mine lead and other sources, such as food, water, air (gasoline), are readily detected in any tooth from an individual.
