Ayabe M
Radioisotopes. 1980 Mar;29(3):124-9. doi: 10.3769/radioisotopes.29.3_124.
A method for the systematic activation analysis of seven noble metals--ruthenium, silver, rhenium, osmium, iridium, platinum and gold--in rocks were developed and examined with radiotracers and irradiated rock samples. After the fusion of the irradiated rock sample with sodium hydroxide and sodium peroxide, 10% sodium sulfide solution is added and rhenium is extracted with pyridine-benzene mixture from 6N sodium hydroxide solution. From the hydroxide-sulfide precipitate fraction, ruthenium and osmium are distilled as tetroxides, silver is precipitated as chloride, gold is extracted with ethyl acetate, and iridium and platinum are extracted with diantipyrylmethane. Each fraction is purified and subjected to the gamma-ray spectrometry. Chemical yields for the elements are more than 60%. Determination limits are given for the seven elements.
开发了一种用于系统活化分析岩石中钌、银、铼、锇、铱、铂和金这七种贵金属的方法，并使用放射性示踪剂和辐照岩石样品进行了检验。将辐照后的岩石样品与氢氧化钠和过氧化钠熔融后，加入10%的硫化钠溶液，用吡啶 - 苯混合物从6N氢氧化钠溶液中萃取铼。从氢氧化物 - 硫化物沉淀部分，钌和锇以四氧化物形式蒸馏出来，银以氯化物形式沉淀，金用乙酸乙酯萃取，铱和铂用二安替比林甲烷萃取。每个部分都经过纯化并进行γ射线光谱分析。这些元素的化学产率超过60%。给出了这七种元素的测定限。
