Abstract
Abstract In the determination of the total lead content of urine by the dithizone method a large part of the analysis time is spent in ashing. McCord and Zemp described a method using “wet ashing,” which shortened the ashing time to 30 min. The author, by using a modification of the above method, found that no loss of lead occurred as compared with a determination carried out with a longer ashing time. This method may be used for the analysis of urine from persons suffering from lead poisoning even after treatment with EDTA or penicillamine.
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