Effect of wind speed on the atmospheric levels of particles produced by traditional and non traditional sources on the island of curacao |
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Authors: | Eugenio Sanhueza Johnny Romero Enigma Gijsbertha |
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Affiliation: | Instituto Venezolano de Investigaciones Científicas Apartado 1827, Caracas 1010-A, Venezuela |
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Abstract: | The TSP, SO4= and Pb levels observed downwind of a large refinery and in the city of Willemstad in Curaçao are presented. The results show that wiht increasing wind speed TSP and SO4= levels increase while Pb levels decrease. On the other hand, at relatively constant wind speeds a good correlation between TSP and Pb was observed.The correlation observed between TSP, SO4= and Pb and the wind speed, the effect of rain on the atmospheric levels observed during the sampling period, the lack of secondary pollutants (e.g. ozone, NO3?) and the composition of the island background air, allow us to conclude that the SO4= measured at the monitoring sites is mainly produced as a primary pollutant in the refinery, the high atmospheric TSP levels are due to refinery emissions (traditional source) and the recirculation of street dust particles (non traditional source) produced by traffic and the predominantly high wind velocity.The implication on air quality and control measures are discussed. |
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