Chronological variations in concentrations and isotopic compositions of anthropogenic atmospheric lead in sediments of a remote subalpine pond

Stable lead isotopic analyses of historic and contemporary lead contamination of San Francisco Bay estuary

“…Aerosol isotopic compositions have changed temporally as a result of different ore sources em ployed in TEL production Ž Rabinowitz and Wether . ill, 1972;Shirahata et al, 1980;Ritson et al, 1994 . Most San Francisco Bay area gasolines and aerosols from 1972 and later have lead isotopic compositions 207 higher in 206 Pbr Pb Ž Rabinowitz and Wetherill, 1972;Hirao and Patterson, 1974;Smith et al, 1992.…”

Pyrogenic Remobilization of Historic Industrial Lead Depositions

“…6,7,43 Temporal variations of the isotopic composition of leaded gasoline in California correspond with temporal differences in ores used to manufacture alkyl-lead in the U.S. during that period. In the 1960s, the ores were obtained primarily from Australia, Canada, Mexico, and Peru, which had 44 It is, therefore, assumed that the isotopic composition of those aerosols reflects a mixture of contemporary and previous industrial lead emissions that have been resuspended, as observed in Los Angeles 8 and the San Francisco Bay area. 47 showed a significant correlation (r = 0.76, p < 0.001, n = 34) between wildfire frequency and regional spring and summer temperatures in the Western U.S.…”

A whole‐basin study of sediment accumulation using stable lead isotopes and flyash particles in an acidified lake, Sweden

“…It has been understood for more than three decades that analysis of stable lead isotopes is an effective tool to distinguish between lead (Pb) derived from different sources in environmental samples and particularly to distinguish pollution Pb from natural Pb (Chow and Patterson 1962;Shirahata et al 1980). Lead has four stable isotopes ( 204 Pb,206 Pb,207 Pb, 208 Pb); the relative amounts of these isotopes vary among different Pb-bearing minerals depending on the geological age and origin.…”