Anion-ExchangeChromatographyand Atomic

A method for determination of lead in blood, urine, and tissue is presented. This procedure combines the selective concentration of lead by, and the elimination of large quantities of alkali metals on, an anion-exchange resin with the speed and accuracy of determination by atomic absorption spectro-photometry. Additional Keyphrases blood, urine, compared #{149} normal values The determination of lead in biological materials before AAS1 was developed involved destroying organic matter by digesting the specimen in boil-ing sulfuric acid or perchloric-suffuric acid mix-tures, then extracting with a dithizone solution and measuring the resulting colored complex in the extract (1, 2). The many advantages of AAS (sen-sitivity, specificity, and speed of analysis) hav