High blood lead levels in Brazilian preschool children: investigation of exposure sources (2017)
- Authors:
- Silva, Júlia Prestes da Rocha
- Salles, Fernanda Junqueira
- Leroux, Isabelle Nogueira
- Ferreira, Ana Paula Sacone da Silva
- Silva, Agnes Soares da
- Assunção, Nilson Antônio - Universidade Federal de São Paulo (UNIFESP)
- Sato, Ana Paula Sayuri
- Nardocci, Adelaide Cássia
- Barbosa Jr, Fernando
- Cardoso, Maria Regina Alves
- Olympio, Kelly Polido Kaneshiro
- USP affiliated authors: SATO, ANA PAULA SAYURI - FSP ; NARDOCCI, ADELAIDE CASSIA - FSP ; CARDOSO, MARIA REGINA ALVES - FSP ; OLYMPIO, KELLY POLIDO KANESHIRO - FSP
- Unidade: FSP
- Subjects: POLUIÇÃO AMBIENTAL; EXPOSIÇÃO AMBIENTAL; CHUMBO; CRIANÇAS; PRÉ-ESCOLAR
- Language: Inglês
- Abstract: Background/Aim Lead is known as one of the most dangerous environmental pollutants. In 2013, a previous study showed high blood lead levels (BLL) in preschool children attending Day Care Centers (DCC), in São Paulo, Brazil. The objective of this study was to analyze the main sources of lead exposure, considering the home and school environments, previously studied by questionnaires. Methods This cross-sectional study included 4 DCC (NR, PS, PF, VA), which presented 1-4-year-old children with higher BLLs among the 50 DCC participants in 2013. Children (n=54) were sorted out into "high exposure" (≥13.9μg/dL - 97.5 percentile of the 2013 sample) and "low exposure" (<5μg/dL). The X-ray fluorescence portable analyzer was used for the lead direct analysis in the environment. Screenings were performed to evaluate the lead concentrations in DCC’s building and playgrounds and children’s households, including wall paints, toys, floors, doors, windows, tableware items, among others. Results There was found a significant difference in the BLL>5μg/dL percentage among the DCCs. The highest BLL percentage was found in the “NR” DCC (69.6%), and the lower was found in the “PS” DCC (20%). In “NR” DCC building, 28.2% of the measurements were positive (>600 ppm), while 72.2% were positive in playground. Positive measurements in “PS” DCC building were 32% and 50% in playgrounds. A significant association was found between high BLL and lead found in households and DCC (p<0.001). Most of the positives measurements were found on tiles, painted iron window structures, doors and playground equipment. Conclusions The results showed that the lead exposure estimated from the DCCs, where children spend about 10 hours/day can be as relevant as their household exposure. Therefore, public authorities should render efforts to provide a rigorous surveillance for lead–free supplies painting and all objects offered to children
- Imprenta:
- Source:
- Conference titles: Annual Conference of the International Society of Environmental Epidemiology
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ABNT
SILVA, Júlia Prestes da Rocha et al. High blood lead levels in Brazilian preschool children: investigation of exposure sources. 2017, Anais.. Sydney: Faculdade de Saúde Pública, Universidade de São Paulo, 2017. Disponível em: http://www.isee2017.com/download/ISEE2017-ABSTRACT-BOOK.pdf. Acesso em: 30 set. 2024. -
APA
Silva, J. P. da R., Salles, F. J., Leroux, I. N., Ferreira, A. P. S. da S., Silva, A. S. da, Assunção, N. A., et al. (2017). High blood lead levels in Brazilian preschool children: investigation of exposure sources. In Abstracts. Sydney: Faculdade de Saúde Pública, Universidade de São Paulo. Recuperado de http://www.isee2017.com/download/ISEE2017-ABSTRACT-BOOK.pdf -
NLM
Silva JP da R, Salles FJ, Leroux IN, Ferreira APS da S, Silva AS da, Assunção NA, Sato APS, Nardocci AC, Barbosa Jr F, Cardoso MRA, Olympio KPK. High blood lead levels in Brazilian preschool children: investigation of exposure sources [Internet]. Abstracts. 2017 ;[citado 2024 set. 30 ] Available from: http://www.isee2017.com/download/ISEE2017-ABSTRACT-BOOK.pdf -
Vancouver
Silva JP da R, Salles FJ, Leroux IN, Ferreira APS da S, Silva AS da, Assunção NA, Sato APS, Nardocci AC, Barbosa Jr F, Cardoso MRA, Olympio KPK. High blood lead levels in Brazilian preschool children: investigation of exposure sources [Internet]. Abstracts. 2017 ;[citado 2024 set. 30 ] Available from: http://www.isee2017.com/download/ISEE2017-ABSTRACT-BOOK.pdf - High blood lead levels are associated with lead concentrations in households and day care centers attended by Brazilian preschool children
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