Use of isotope ratios to identify sources contributing to pediatric lead poisoning in Peru.

TítuloUse of isotope ratios to identify sources contributing to pediatric lead poisoning in Peru.
Publication TypeJournal Article
Año de publicación2003
AutoresNaeher, Luke P., Rubin Carol S., Hernandez-Avila Mauricio, Noonan Gary P., Paschal Dan, Narciso Juan, Lain Rocio Espinoza, Gastanaga Carmen, Almeyda Rosa, Jarrett Jeff, Caldwell Kathleen L., and McGeehin Michael
JournalArchives of environmental health
Volume58
Issue9
Pagination579-89
Date Published2003 Sep
Publication Languageeng
Abstract

In 1998, a school-based blood lead level (BLL) survey of 2,510 children, conducted in Lima and Callao, Peru, revealed elevated BLLs in children from 2 Callao schools (mean BLL = 25.6 microg/dl; n = 314) and in children from Callao overall (mean BLL = 15.2 microg/dl; n = 898), compared with children from Lima (mean BLL = 7.1 microg/dl; n = 1,612). Public health officials at Peru's Direccion General de Salud Ambiental (DIGESA) hypothesized that a possible source of the elevated pediatric BLLs observed in Callao was a large depository near the port where mineral concentrates are stored prior to shipment. The U.S. Centers for Disease Control and Prevention worked with DIGESA to identify source(s) that contributed to the pediatric lead poisonings by comparing isotopic profiles of lead in blood, mineral, gasoline, and air filter samples. The lead isotope ratio (IR) observed in mineral samples from the depository in Callao differed from those in gasoline samples from Lima and Callao. The blood lead IRs of children living near the depository were similar to the IRs of the mineral samples and different from the IRs of the gasoline samples, suggesting that lead from the depository-and not gasoline-was the primary source of lead in these children. Lead IR analysis of regional air filter samples supported these findings.

Alternate JournalArch. Environ. Health