Measurement of Lead in Blood and Urine by Atomic Absorption Spectrophotometry

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Abstract
An extraction method for the estimation of lead in red cells is given. The method avoids both acid digestion and/or protein precipitation. It is extremely simple and reliable, and can easily be performed by technicians. A technical error of 4.5 v.g lead per 100 ml of red cells has been obtained. The use of red cells instead of whole blood provides a more accurate measure of exposure to lead as the lead is concen¬trated within the red cells. Normal and toxic ranges are given. As it is frequently required to monitor the lead excretion of patients receiving chelates for therapy, a method for the analysis of urine specimens from patients on this therapy is given.

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