Methodological study demonstrates direct spectrographic measurement of trace lead in cerebrospinal fluid, highlighting rapid detection without sample pretreatment.
A quantitative spectroscopic method of the determination of small concentrations of lead in certain biological material is described. It is valid for concentrations between 1 x 10-8 and 2 x 10-5 gm/cc, and the precision of a determination is better than 15%. The ability to make determinations with very small samples, and to use the material without previous treatment, are important features of the method.
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Foster et al. (1936) studied this question.
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