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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.
Adrian Frank (Sat,) studied this question.