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本文综述了以加温熔融萘和联苯等来萃限某些金属螯合物,对萃取平衡、提高选择性和消除干扰、与液-液萃取相比,有很大改善。并分别对含氮螯合剂δ-羟基喹啉和肟类等,与合硫螯合剂铜试剂及荒酸盐和磺酸盐等,结合文献分别引述。指出对某些必需加辅助萃取剂和室温不能萃取的螯合剂,以及利用热稳定性不同和络合物形成速度快慢,可以同时萃取性质类似的金属,这些特征在分析应用上是有其重要意义的。
In this paper, the extraction of certain metal chelates by means of heating and melting of naphthalene and biphenyl and the like, extraction equilibrium, selectivity improvement and elimination of interference, are greatly improved compared with liquid-liquid extraction. And the nitrogenous chelating agents such as δ-hydroxyquinoline and oximes, respectively, and the sequestering chelating agent copper reagent and the brines and sulfonates, etc., are cited in the literature. It is pointed out that it is of great significance in the analytical application to extract some chelating agents that can not be extracted at room temperature and thermostability and complex formation speed of.