摘要：In order to apply to a tracer experiment, an analytical method for 210Pb in animal organs and excreta was studied, and a convenient method was established as follows : The sample was digested at 150-170°, using conc. HNO8 and 60 % HClO4. The separation of 210Pb from 210Bi and 210Po, the daughter nuclides of 210Pb, was accomplished by passing 1 N HCl solution of the digested sample through a column of anion-exchange resin, and by eluting 210Pb with 0.1 N HCl. The β-activity of 210Pb was measured using a liquid scintillation counter. In this method, the radiochemical recovery of 210Pb from biological samples was quantitative, and the counting efficiency of the β-activity of 210Pb was 37.1%. Furthermore, the procedure of this method does not require a long time and many samples can be treated in a short time.
关键词：^ Pb;determination of 210Pb;liquid scintillation counter;biological sample;separation of 210Pb from daughter nuclides
