ABSTRACT
This chapter discusses a multifaceted analytical approach to detecting lead-rich particles in dust and soil samples, and the identification of lead sources based on a combination of chemistry and morphology. The first step in a source apportionment study is the collection of samples, and their subsequent analysis. The ability to analyze individual particles in this manner makes SEM/EDS analysis an invaluable tool in source apportionment of particulate matter. The chapter also discusses the importance of source apportionment as it relates to the study of environmental lead. The characterization and source apportionment of particulate matter has provided a wealth of information on total suspended particulates and PM-10 over the past 20 years. A very effective medium for collecting and subsequently observing lead particles is surface-dust accumulation. Historically, the standard technique used by industrial hygienists to evaluate such surface contamination has been “swipe” or “wipe” sampling.
