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Cadernos de Saúde Pública

On-line version ISSN 1678-4464
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KURIYAMA, Gisele Sayuri; MOREIRA, Josino Costa  and  SILVA, Célia Regina Sousa da. Nitrogen dioxide (NO2) occupational exposure assessment on Rio de Janeiro's city traffic wards. Cad. Saúde Pública [online]. 1997, vol.13, n.4, pp.677-683. ISSN 1678-4464.

In order to assess level of human exposure to nitrogen dioxide, 22 traffic police from the city of Rio de Janeiro were monitored during their working hours for 3 consecutive days. Samples were taken by using a passive sampler (badge) and analyzed spectrophotometrically after reacting with sulphanilic acid followed by coupling with N-naphtilethylenediamine dihydrochloride. Results ranged from 13.3 to 193.6 mg/m3. According to the literature, these levels are not associated with any acute damage to human health but care should be taken to avoid long-term problems.

Keywords : Nitrogen Dioxide; Environmental Exposure; Occupational Exposure; Passive Sampling.

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