I am trying to formulate a research topic centered around the environmental effects of general aviation's continued use of leaded gasoline (containing tetraethyllead) to power piston aircraft. In particular I am interested in studying the extent to which lead levels may or may not be elevated around airports that serve such small piston aircraft.
Are there any extant remote sensing techniques for detecting the presence of lead particulate in the atmosphere or soil? Can spectroscopy be used to detect lead in the same way as satellites do for other pollutants, like CO2 and methane?
If such remote sensing capability exists -- whether through satellites or something more small-scale -- does anyone know if NASA has any equipment capable of collecting such data?