Isotopes as Monitors of Anthropogenic and Natural Sources Affecting the Surficial Environment

Lead Isotopes as Monitors of Anthropogenic and Natural Sources Affecting the Surficial Environment 

Robert A. Ayuso, Nora K. Foley, and Gail Lipfert  

Robinson and Ayuso (2004) used spatial statistical tests and lead isotope tracers to measure the influence of arsenical pesticide use on stream sediment chemistry in New England. Factor analysis on metal concentrations in 1600 stream sediment samples were grouped according to their agricultural-index value (areas inferred to have used arsenical pesticides extensively). Pb and As contents were correlated, and 

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