申请人:The President and Trustees of the Miami University
公开号:US04659815A1
公开(公告)日:1987-04-21
Chromogenic aza-12-crown-4 ethers which can be used for the spectrophotometric determination of lithium ion in aqueous solutions are disclosed. The compounds of the invention are particularly useful for the analysis of Li.sup.30 in the presence of Na.sup.+, a situation common in biological and geological systems. The compounds [e.g., 1-(2-oxy-5-nitrobenzyl)-1-hydro-1-aza-4,7,10-trioxacylclododecane], their methods of manufacture, and methods of utilizing the compounds for the analysis of lithium are disclosed and claimed.
本发明揭示了可用于水溶液中锂离子的分光光度法测定的色原性aza-12-冠-4醚。该发明的化合物特别适用于在生物和地质系统中常见的Na.sup.+存在下分析Li.sup.30。本发明揭示和声明了这些化合物(例如,1-(2-氧基-5-硝基苯基)-1-羟基-1-aza-4,7,10-三氧杂环十二烷)的制备方法以及利用这些化合物进行锂分析的方法。