Concentration and particle size distribution of particulate emissions in automobile exhaust

Sources and elemental composition of aerosol in Pasadena, California, by energy-dispersive x-ray fluorescence

“…The ratios Pb(backup)/Pb(total) and Br(backup)/Br(total) are equal, to within 1%. Size distributions of Pb emitted from automobiles have been extensively measured (13)(14)(15)(16)(17)(18)(19)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37). Except for the Hirschler papers (13,14) (where the collection method may have biased the result), there seems to be general agreement that (once allowance has been made for nonsuspendable particles) the mass median aerodynamic diameter of the airborne exhaust Pb is submicron.…”

Identification of soil lead compounds from automotive sources

“…Lee et al (19) have measured the concentration and size distributions of particulate emission in auto exhaust. Their results show that the percentage of water-soluble particulate lead increases when the diluted exhaust is irradiated by 3000-6000 Á light.…”

Material balance for automobile-emitted lead in Los Angeles basin

“…The size distribution of auto exhaust lead aerosol has been studied by many investigators (4)(5)(6)(7)(8)(9)(27)(28)(29)(30). Only Habibi (9) and Ter Haar et al ( 7) attempted to simulate actual driving conditions, and of these, the study by Habibi was most detailed.…”