Probabilistic modeling of young children's overall lead exposure in France: integrated approach for various exposure media. - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Environment International Année : 2007

Probabilistic modeling of young children's overall lead exposure in France: integrated approach for various exposure media.

Résumé

OBJECTIVES: Emissions of lead into the environment (and thus its environmental concentrations) have decreased in recent years. We sought to estimate the overall lead exposure of children aged 6 months to 6 years (the population group most exposed and most sensitive to lead) in France through the various media (air, food, water, soils, and dust) and the respective contributions of each medium to the total dose. We have focused on the general population, leaving aside specific risk factors such as deteriorated lead paints. METHODS: We used the most recent French intake data for food and water, and a daily ingested quantity selected from the literature for soils and dust. Contamination data came from the first total diet study of contaminant levels in France (2000-2001), from regulatory testing of tap water (2004), a literature review of lead in urban soils, and a pilot study (2005) of lead in dust. Air quality monitoring measurements showed that the contribution of air could now be safely ignored. Weekly exposure doses were estimated with Monte Carlo simulations. RESULTS: Median weekly exposure dose was 7.5 microg/kg bw.week for children aged 6 months to 3 years and 4.7 for those aged from 3-6 years. 95th percentiles were 13.5 and 8.7 microg/kg bw.week. Exposure came mainly from food. The principal uncertainties are associated with quantification limits in food and water, representativeness and traceability of tap water samples, and absence of recent data about urban soil contamination. CONCLUSIONS: These results differ quite notably from earlier estimates and highlight the need, especially for policy-making purposes, to update exposure measurements for this metal.

Dates et versions

hal-00686553 , version 1 (08-04-2022)

Identifiants

Citer

Philippe Glorennec, Nawel Bemrah, Alexandra Tard, Alban Robin, Barbara Le Bot, et al.. Probabilistic modeling of young children's overall lead exposure in France: integrated approach for various exposure media.. Environment International, 2007, 33 (7), pp.937-45. ⟨10.1016/j.envint.2007.05.004⟩. ⟨hal-00686553⟩
166 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More