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Title: Manganese and lead in dust fall accumulation in elementary schools near a ferromanganese alloy plant

Abstract

Previous studies have shown elevated airborne manganese (Mn) in villages adjacent to a Mn alloy production plant in Brazil and negative associations between biomarkers of Mn and children's cognition and behavior. Since small Mn particles may be carried for long distances, we measured manganese (Mn) and lead (Pb) dust fall accumulation in 15 elementary schools, located between 1.25 and 6.48 km from the plant in the municipality of Simões Filho, Bahia, Brazil. Passive samplers (polyethylene Petri dishes) were set in interior and exterior environments. After 30 days, the samplers’ content was solubilized with diluted nitric acid and Mn and Pb levels were analyzed by electrothermal absorption spectrometry. The overall geometric mean and range of Mn and Pb accumulation in dust fall (loading rates) were 1582 μg Mn/m{sup 2}/30 days (37–37,967) and 43.2 μg Pb/m{sup 2}/30 days (2.9–210.4). A logarithmic decrease in interior and exterior Mn loading rates was observed with distance from the ferro-manganese alloy plant. Multiple regression analyses of log-transformed Mn loading rate within the schools showed a positive association with Mn levels in outdoor dust, a negative association with distance from the plant; as well, wind direction (downwind>upwind) and school location (urban>rural) entered significantly into the model. Formore » the interior school environments, located within a 2-km radius from the plant, loading rate was, on average, 190 times higher than the Mn levels reported by Gulson et al., (2014) in daycare centers in Sydney, Australia, using a similar method. Pb loading rates were not associated with distance from the plant and were lower than the rates observed in the same daycare centers in Sydney. Our findings suggest that a significant portion of the children in this town in Brazil may be exposed to airborne Mn at concentrations that may affect their neurodevelopment. - Highlights: • Manganese levels in settled dust in schools are inversely associated with distance from the Mn processing plant. • In schools within 2-km from plant, indoor Mn levels are 190 times higher than the levels observed in daycares in Australia. • Pb levels are not associated with distance from the plant and are lower than the levels observed in daycares in Australia.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];
  1. Federal University of Bahia, College of Pharmacy, Laboratory of Toxicology, Avenue Barão Jeremoabo, s/n, Ondina, 40170-115 Salvador, Bahia (Brazil)
Publication Date:
OSTI Identifier:
22687750
Resource Type:
Journal Article
Journal Name:
Environmental Research
Additional Journal Information:
Journal Volume: 148; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0013-9351
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ABSORPTION SPECTROSCOPY; AIR POLLUTION; BIOLOGICAL MARKERS; ECOLOGICAL CONCENTRATION; EDUCATIONAL FACILITIES; LEAD; LOADING RATE; MANGANESE; MANGANESE ALLOYS; REGRESSION ANALYSIS

Citation Formats

Menezes-Filho, José Antonio, E-mail: antomen@ufba.br, Souza, Karine O. Fraga de, E-mail: karinefraga11@hotmail.com, Rodrigues, Juliana L. Gomes, E-mail: juuhrodrigues@icloud.com, Santos, Nathália Ribeiro dos, E-mail: nathalia-rib@hotmail.com, Bandeira, Matheus de Jesus, E-mail: matheusbandeira1@hotmail.com, Koin, Ng Lai, E-mail: nglaikoin@hotmail.com, Oliveira, Sérgio S. do Prado, E-mail: sergiosprado.33@gmail.com, Godoy, Ana Leonor P. Campos, E-mail: leonor.godoy@ufba.br, and and others. Manganese and lead in dust fall accumulation in elementary schools near a ferromanganese alloy plant. United States: N. p., 2016. Web. doi:10.1016/J.ENVRES.2016.03.041.
Menezes-Filho, José Antonio, E-mail: antomen@ufba.br, Souza, Karine O. Fraga de, E-mail: karinefraga11@hotmail.com, Rodrigues, Juliana L. Gomes, E-mail: juuhrodrigues@icloud.com, Santos, Nathália Ribeiro dos, E-mail: nathalia-rib@hotmail.com, Bandeira, Matheus de Jesus, E-mail: matheusbandeira1@hotmail.com, Koin, Ng Lai, E-mail: nglaikoin@hotmail.com, Oliveira, Sérgio S. do Prado, E-mail: sergiosprado.33@gmail.com, Godoy, Ana Leonor P. Campos, E-mail: leonor.godoy@ufba.br, & and others. Manganese and lead in dust fall accumulation in elementary schools near a ferromanganese alloy plant. United States. doi:10.1016/J.ENVRES.2016.03.041.
Menezes-Filho, José Antonio, E-mail: antomen@ufba.br, Souza, Karine O. Fraga de, E-mail: karinefraga11@hotmail.com, Rodrigues, Juliana L. Gomes, E-mail: juuhrodrigues@icloud.com, Santos, Nathália Ribeiro dos, E-mail: nathalia-rib@hotmail.com, Bandeira, Matheus de Jesus, E-mail: matheusbandeira1@hotmail.com, Koin, Ng Lai, E-mail: nglaikoin@hotmail.com, Oliveira, Sérgio S. do Prado, E-mail: sergiosprado.33@gmail.com, Godoy, Ana Leonor P. Campos, E-mail: leonor.godoy@ufba.br, and and others. Fri . "Manganese and lead in dust fall accumulation in elementary schools near a ferromanganese alloy plant". United States. doi:10.1016/J.ENVRES.2016.03.041.
@article{osti_22687750,
title = {Manganese and lead in dust fall accumulation in elementary schools near a ferromanganese alloy plant},
author = {Menezes-Filho, José Antonio, E-mail: antomen@ufba.br and Souza, Karine O. Fraga de, E-mail: karinefraga11@hotmail.com and Rodrigues, Juliana L. Gomes, E-mail: juuhrodrigues@icloud.com and Santos, Nathália Ribeiro dos, E-mail: nathalia-rib@hotmail.com and Bandeira, Matheus de Jesus, E-mail: matheusbandeira1@hotmail.com and Koin, Ng Lai, E-mail: nglaikoin@hotmail.com and Oliveira, Sérgio S. do Prado, E-mail: sergiosprado.33@gmail.com and Godoy, Ana Leonor P. Campos, E-mail: leonor.godoy@ufba.br and and others},
abstractNote = {Previous studies have shown elevated airborne manganese (Mn) in villages adjacent to a Mn alloy production plant in Brazil and negative associations between biomarkers of Mn and children's cognition and behavior. Since small Mn particles may be carried for long distances, we measured manganese (Mn) and lead (Pb) dust fall accumulation in 15 elementary schools, located between 1.25 and 6.48 km from the plant in the municipality of Simões Filho, Bahia, Brazil. Passive samplers (polyethylene Petri dishes) were set in interior and exterior environments. After 30 days, the samplers’ content was solubilized with diluted nitric acid and Mn and Pb levels were analyzed by electrothermal absorption spectrometry. The overall geometric mean and range of Mn and Pb accumulation in dust fall (loading rates) were 1582 μg Mn/m{sup 2}/30 days (37–37,967) and 43.2 μg Pb/m{sup 2}/30 days (2.9–210.4). A logarithmic decrease in interior and exterior Mn loading rates was observed with distance from the ferro-manganese alloy plant. Multiple regression analyses of log-transformed Mn loading rate within the schools showed a positive association with Mn levels in outdoor dust, a negative association with distance from the plant; as well, wind direction (downwind>upwind) and school location (urban>rural) entered significantly into the model. For the interior school environments, located within a 2-km radius from the plant, loading rate was, on average, 190 times higher than the Mn levels reported by Gulson et al., (2014) in daycare centers in Sydney, Australia, using a similar method. Pb loading rates were not associated with distance from the plant and were lower than the rates observed in the same daycare centers in Sydney. Our findings suggest that a significant portion of the children in this town in Brazil may be exposed to airborne Mn at concentrations that may affect their neurodevelopment. - Highlights: • Manganese levels in settled dust in schools are inversely associated with distance from the Mn processing plant. • In schools within 2-km from plant, indoor Mn levels are 190 times higher than the levels observed in daycares in Australia. • Pb levels are not associated with distance from the plant and are lower than the levels observed in daycares in Australia.},
doi = {10.1016/J.ENVRES.2016.03.041},
journal = {Environmental Research},
issn = {0013-9351},
number = ,
volume = 148,
place = {United States},
year = {2016},
month = {7}
}