Metal(loid) exposure on children from a historical metallurgical site

摘要

The data obtained in this study represent a comprehensive assessment of human exposure to metal(loids) enriched in the environment, derived from metallurgical activities in Cedral, a town in North-Central Mexico. A multi-elemental analysis (As, Cd, Cr, Cu, Fe, Mn and Sb) shows high metal(loid) content in environmental media (tailings samples, dust samples and particulate matter 2.5 mu m collected in the urban area). Blood samples from school-age children were collected and analyzed to determine exposure levels. The assessment of the data obtained from this study shows that Sb and Cd are highly enriched elements in the environment of Cedral; their respective levels in the blood samples analyzed are 10.9 and 11.3 times higher than their pediatric reference levels. The statistical analysis indicates a strong relationship between metal(loid)s in blood samples and both dust and PM2.5 samples, which reveal that ingestion and inhalation could represent important exposure routes for metal(loid) intake. Continuous monitoring in the area is paramount to assess the health impact posed by the different routes of exposure. It is also important to implement health education programs to decrease the population's exposure to metal(loid)s and to design urgent remediation measures, to be implemented as soon as possible.