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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Spatial and seasonal trends of polychlorinated dioxins, furans and dioxin-like polychlorinated biphenyls in air using passive and active samplers and inhalation risk assessment

Texto completo
Autor(es):
Francisco, Ana Paula [1] ; Nardocci, Adelaide Cassia [1] ; Tominaga, Maria Yumiko [2] ; da Silva, Camila Rodrigues [2] ; de Assuncao, Joao Vicente [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Sch Publ Hlth, Ave Dr Arnaldo 715, Sao Paulo - Brazil
[2] Sao Paulo State Environm Co, Ave Prof Frederico Hermann Jr 345, Sao Paulo - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: ATMOSPHERIC POLLUTION RESEARCH; v. 8, n. 5, p. 979-987, SEP 2017.
Citações Web of Science: 6
Resumo

Thirty-five and eleven air samples were collected using, respectively, active samplers (filter + PUF) and passive samplers (PUF disks), over two consecutive four-month periods (spring and autumn-winter), in urban, urban/industrial, and rural (background) sites in Sao Paulo, Brazil. All the samples were extracted with toluene: acetone (9: 1) in a Soxhlet apparatus, and the extracts were then purified. Analysis for polychlorinated dioxins and furans (PCDD/Fs) and for dioxin-like polychlorinated biphenyls (dl-PCBs) were made by High Resolution Gas Chromatography/High Resolution Mass Spectrometry (HRGC-HRMS). Human exposure risk was evaluated using inhalation risk assessment. Results showed: (1) there are statistical differences for PCDD/F concentrations in air between periods 1 and 2 (p = 0.03), whereas dl-PCB levels were not statistically different (p = 0.52); (2) PCDD/F and dl-PCB air levels were in the following order: urban/industrial > urban > rural for both active and passive samples; (3) PCDD/F and dl-PCB concentrations ranged from 7.76 to 453 fg TEQ/m(3) in active air samples, and from 6.11 to 469 fg TEQ/m(3) in passive air samples; (4) sampling rates for PCDD/Fs by the two approaches used showed considerable differences; (5) average daily intake by inhalation ranged from 18.1 to 55.6 fg TEQ/kg day, respectively, for adults and children, representing 1.8-5.6% of the lower range of the Tolerable Daily Intake recommended by the World Health Organization. Based on these results, the inhalation risk for PCDD/Fs and dl-PCBs, for local Sao Paulo residents, should be considered low. (C) 2017 Turkish National Committee for Air Pollution Research and Control. Production and hosting by Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 14/00745-9 - Comparação entre coletores ativo e passivo na determinação da toxicidade equivalente da atmosfera em relação a dioxinas, furanos e bifenilas policloradas toxicologicamente similares às dioxinas
Beneficiário:João Vicente de Assunção
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 13/20299-0 - Toxicidade equivalente da atmosfera por dioxinas, furanos e bifenilas policloradas, com o uso de duas técnicas de coleta, passiva e ativa
Beneficiário:Ana Paula Francisco
Modalidade de apoio: Bolsas no Brasil - Doutorado