Summary
Whole blood lead (Pb-B), urinary δ-aminolevulinic acid (ALA-U) and free erythrocyte protoporphyrin (FEP) were measured in three groups of workers (n = 196) with different degrees of exposure to lead, and one group of men with no previous exposure to the metal (n = 48). Inter-group comparison showed a correlation of r = 0.73 between Pb-B and log of ALA-U, and r = 0.91 between Pb-B and log of FEP. ALA-U and FEP values rose sharply after Pb-B values reached 450–500 μg/1.
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Labrèche, F., P'an, A. Relationships between three indicators of lead exposure in workers: Blood lead, δ-aminolevulinic acid and free Erythrocyte Protoporphyrin. Int. Arch Occup Environ Heath 51, 35–44 (1982). https://doi.org/10.1007/BF00378408
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DOI: https://doi.org/10.1007/BF00378408