Uesugi M, Sato K, Miyano K, Higuchi H
Radioisotopes. 1982 Mar;31(3):131-4.
Since lead contains more or less 210Pb, the selection for lead materials has to be done before construction of the low level radiation shield. In this paper, a method for determination of 210Pb is based on radioanalytical separation such as DDTC (sodium diethyl dithio carbamate) extraction followed by beta ray counting of 210Bi. Fourteen commercial lead samples and three old lead samples were analysed for 210Pb. The concentration for 210Pb in commercial samples was found to range from 0.063 to 11 Bq/g (1.7 to 300 pCi/g) and in old samples was less than 0.01 Bq/g (0.3 pCi/g). These results will be useful to the selection of shielding material. The detection limit and the time required for 210Pb determination was 0.003 Bq/g (0.1 pCi/g) and 5.5 hours, respectively.
由于铅或多或少都含有210Pb，因此必须在建造低水平辐射屏蔽之前选择铅材料。本文介绍了一种测定210Pb的方法，该方法基于放射性分析分离，如用二乙基二硫代氨基甲酸钠（DDTC）萃取，然后对210Bi进行β射线计数。对14个商业铅样品和3个旧铅样品进行了210Pb分析。发现商业样品中210Pb的浓度范围为0.063至11 Bq/g（1.7至300 pCi/g），旧样品中的浓度低于0.01 Bq/g（0.3 pCi/g）。这些结果将有助于屏蔽材料的选择。210Pb测定的检测限和所需时间分别为0.003 Bq/g（0.1 pCi/g）和5.5小时。
