[A literature review of concentrations of arsenic, lead, cadmium and mercury in body fluids and tissues for establishing normal values and detection of body burden. 4. Lead, summary of average values for As, Cd, Hg and literature references].

The last of 4 communications on metal concentrations in human body media deals with lead. It includes also a summary of mean exposure levels, critically elevated levels, and references. Publications obtained from a comprehensive data bank search from January 1980 to April 1984 are listed in tables; study groups have been assigned to the following categories: normal; exposed; and exposed, exhibiting adverse health effects. Quality and strength of evidence of analytical procedures and reported data are discussed, particularly in light of adverse health effects. General methods and individual analytical procedures were presented in the 1st communication.