Cadernos de Saúde Pública
On-line version ISSN 1678-4464Print version ISSN 0102-311X
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. http://dx.doi.org/10.1590/S0102-311X1997000400010.
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.