The analytical determination of lead in soil is discussed with particular reference to emission spectrographic and atomic absorption spectrophotometric methods. The problems associated with the two techniques are discussed, and accuracy and precision data are presented. Data indicating that the titanium-to-lead concentration ratio can be used to differentiate between lead-contaminated and noncontaminated soils are presented.
J. L. Seeley, D. Dick, J. H. Arvik, R. L. Zimdahl, and R. K. Skogerboe, "Determination of Lead in Soil," Appl. Spectrosc. 26, 456-460 (1972)