[Elemental Characteristics and Health Risk Assessment of Heavy Metals in Atmospheric PM in a Suburb of Zhuhai City].

To investigate the characteristics, sources, and health risks of trace heavy metals in fine particles, PM samples were collected at a suburban site of Zhuhai in the Pearl River Delta Region. Fifteen elements in the PM were analyzed by an X-ray fluorescence method. The results showed that the total mass concentrations of crustal elements (Al, Si, Ca, Fe, and Ti) in a typical month during spring, summer, autumn, and winter were (708±213), (645±269), (1155±503), and (1466±492) ng·m, respectively, while the total mass concentrations of the rest of the trace elements (Ba, Co, Cr, Cu, Mn, Ni, Pb, Sb, V, and Zn) were (271±124), (163±87.