Ultrapurification of Archaeological Lead

作者：Boiko R S^*; Virich V D; Danevich F A; Dovbush T I; Kovtun G P; Nagornyi S S; Nisi S; Samchuk A I; Solopikhin D A; Shcherban' A P

来源：Inorganic Materials, 2011, 47(6): 645-648.

DOI：10.1134/S0020168511060069

Based on purification efficiency calculations for lead distillation, we developed a combined process for the ultrapurification of archaeological lead. We obtained pilot amounts of high-purity archaeological lead and PbO with the following contents of detrimental impurities: U, < 2 ppb; Th, < 1 ppb; Ni, Cu, Fe, Si, Ti, Mg, Al, Mn, Cr, V, Co, < 0.1 ppm; K, Ca, Zn, Cd, Ag, Sb, < 1 ppm. Lead of such purity can be used in low-background experiments as a protective shield material and in the growth of low-background PbWO4 and PbMoO4 scintillator crystals. From an isotope ratio, we were able to identify the origin of the archaeological lead.

• 出版日期2011-6