Ushang Desai Published in Journal of Environmental Health
Ushang Desai (Florida) co-authored an article entitled "Associations Between Ultrafine Particles and Co-Pollutant Concentrations in the Tampa Bay Area" in the Journal of Environmental Health, Volume 78.9, pages 14-21, May 2016.
Ushang addresses Ultrafine particles (UFPs) are ubiquitous in urban air and have been recognized as a risk to human health. The aim of this study was to measure the relationships among ultrafine particles and other ambient air pollutants and meteorological factors in the Tampa Bay Area. This study measured continuous UFPs, black carbon, oxides of nitrogen (NOx), nitrogen dioxide (NO2), nitric oxide (NO), carbon monoxide (CO), ozone (O3), sulfur dioxide (SO2), particulate matter having an aerodynamic diameter of 10 microns or less (PM10), relative humidity, wind speed, and ambient temperature during January to March 2014. Moreover, the study compared the relationship between UFPs and various co-pollutants daily, including during morning rush hour periods.
This study found a moderate correlation among UFPs and black carbon, NOx, NO2, and NO during hourly continuous measurements and rush hour periods, and a low level of correlation among UFPs and CO, O3, SO2,PM10, relative humidity, wind speed, and ambient temperature. This study indicates that co-pollutants should not be used as a surrogate to assess the human health risk from ultrafine particles exposure.
Alain Watson was the co-author and he is a member of the Hillsborough County Environmental Protection Commission. The article was based on Ushang's work in Graduate school.