Use of pattern recognition methods in the interpretation of heavy metal content (lead and cadmium) in children's scalp hair

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Abstract
A study has been performed to identify the exposure to toxic metals and possible adverse effects in children from various rural and industrial areas in southern Poland. The population studied consisted of school children of age 7–12. The concentrations of Pb and Cd were determined by atomic absorption spectrometry. The mean Pb and Cd content in the hair of the sampled individuals was found to be 4.85 ± 5.91 µg g–1 and 0.430 ± 0.569 µg g–1, respectively. The hair of boys (particularly those living in the areas of greater industrial contamination) exhibited statistically significant higher levels of Pb and Cd than the hair of girls from the same areas. No relationship was revealed between metal content and either anthropometric indices (weight : height ratio or height : age ratio) or educational achievements.

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