摘要
本工作建立了一个以长链伯胺N_(1923)萃取为基础的放射化学中子活化分析法,可测定含量低达10^(-12)g/g的Ir。影响Ir萃取率的关键是Ir在水溶液中的化学形态,而不是其价态。此外,我们发展了一个用于地质样品物相分离的化学分相方法,研究了白垩系-第三系界线粘土样品中异常Ir的赋存状态。
12（1）,43～47In this paper a radiochemical neutron activation analysis method was developed on the basis of extraction by Ions-chain primary amine N<sub>1923</sub>, which is able to determine the Ir contents as low as 10<sup>-12</sup>g/g. The key factor affecting the extraction rate of Ir is the chemical state of Ir in aqueous solution rather than its valence state. Further, a chemical phase separation method for geological samples was also developed, by which the Ir species in clay samples at Cretaceous-Tertiary boundary was studied.
出处
《分析试验室》
CAS
CSCD
北大核心
1993年第1期43-47,共5页
Chinese Journal of Analysis Laboratory
基金
国家自然科学基金
中国科学院择优支持项目
关键词
放射化学中子活化分析
铱
赋存状态
地质界线
Radiochemical neutron activation analysis
iridium
chemical species
geolosical boundaries
