[The value of determining delta-aminolevulinic acid in urine (method II, East German occupational monitoring) as a screening procedure for the assessment of internal residues in occupational exposure to lead].


For the purpose of supervising workers exposed to lead the ratio of blood lead is determined several times per year. The withdrawal of blood samples from the vein necessary for this purpose as well as the comparatively high analytic expense make it essential to revise, whether it is possible to give up the analysis of blood lead at least partially in favour… (More)


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