Temporal variations of source impacts at the receptor, as derived from air particulate monitoring data in Ho Chi Minh City, Vietnam

摘要: Varimax rotation factor analysis was applied to monthly concentrations of elements in total suspended air particulate (TSP) matter Ho Chi Minh City collected from December 1992 November 1996, covering four dry/rainy seasons. Six pollution source types were revealed. Resuspended soil/road dust accounts for 74% the TSP mass loading. Motor vehicles and a which emits particulates containing arsenic account 10% 9%, respectively. There are three minor sources, namely, cement nearby construction site, road local traffic origin burning emissions. The contributions these estimated with high uncertainties. interpretation sources corroborated by studying profiles temporal variations contributions. at receptor modelled using apportionment techniques. From variation patterns, emission scenarios burning, motor vehicle reproduced. Source also exhibit seasonal variability induced changes meteorological conditions. No change found As-containing particulates, suggesting speculation on their as coal fly ash emitting any source.