Polarographic determination of lead in urine

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Abstract
Two relatively rapid methods for the polarographic determination of pathologically increased Pb in urine are described, together with a modification for the estimation of lower concns. The quantitative recovery obtained in the entrainment procedures of Ross and Lucas (1935) (Jour. Biol. Chem. 111: 285) is confirmed. Applications to cases of suspected Pb intoxication are described; there is evidence that 2,3-dimercaptopropanol (BAL) increases the excretion of Pb in the urine. Estimates have been obtained for the diffusion coefficients of the complex Pb ion in citrate buffer in presence and absence of Ca.