Environmental urban lead exposure and blood levels in children of Mexico City
- Centro Panamericano de Ecologia Humana y Salud, Mexico City (Mexico)
- Instituto Nacional de Aslud Publica, Mexico City (Mexico); and others
Lead contamination is now a leading public health problem in Mexico. However, there are few data on the lead content of various environmental sources, and little is known about the contribution of these sources to the total lead exposure in the population of children residing in Mexico City. We conducted a cross-sectional study in a random sample of 200 children younger than 5 years of age who lived in one of two areas of Mexico City. Environmental samples of floor, window, and street dust, paint, soil water, and glazed ceramics were obtained from the participants` households, as well as blood samples and dirt from the hands of the children. Blood lead levels ranged from 1 to 31 {mu}g/dl with a mean of 9.9 {mu}g/dl (SD 5.8 {mu}/dl). Forty-four percent of the children 18 months of age or older had blood lead levels exceeding 10 {mu}g/dl. The lead content of environmental samples was low, except in glazed ceramic. The major predictors of blood lead levels were the lead content of the glazed ceramics used or prepare children`s food, exposure to airborne lead due to vehicular emission, and the lead content of the dirt from the children`s hands. We conclude that the major sources of lead exposure in Mexico City could be controlled by adequate public health programs to reinforce the use of unleaded gasoline and to encourage production and use of unleaded cookware instead of lead-glazed ceramics. 18 refs., 5 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 427049
- Journal Information:
- Environmental Health Perspectives, Journal Name: Environmental Health Perspectives Journal Issue: 11 Vol. 103; ISSN 0091-6765; ISSN EVHPAZ
- Country of Publication:
- United States
- Language:
- English
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