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在研究稀土-铬天青S(CAS)-5-硝基邻菲啰啉(5-N-phen)-溴化十六烷基三甲铵体系的显色反应之后,发现其它阳离子表面活性剂(CSF)如氯化十二烷基吡啶(DPC)有更强的增敏效果,因此本文对比了不同主碳链的烷基吡啶和烷基三甲铵两个系列不同表面活性剂对Nd-CAS-5-N-phen-CSF体系的增敏行为,进而对RE-CAS-5-N-phen-DPC体系络合显色反应做了系统研究,测定了络合物的组成及稳定常数,并拟定了测定稀土总量和钇组稀土的分光光度法。
After studying the color reaction of the rare earth-chrome azure S (CAS) -5-nitro-phenanthroline (5-N-phen) -hexadecyl trimethyl ammonium bromide system, it was found that other cationic surfactants CSF) such as dodecylpyridinium chloride (DPC) has a stronger sensitizing effect, so this article contrasted the different main chain alkylpyridine and alkyl trimethyl ammonium two series of different surfactants Nd-CAS- 5-N-phen-CSF system, and then the complexation color reaction of RE-CAS-5-N-phen-DPC system was systematically studied. The composition and the stability constant of the complex were determined, The determination of total rare earth and yttrium rare earth spectrophotometry.