- 作者: Chang, C.Allen ; Woodhouse, Tamar E. ; Wu, Qihui
- 作者服務機構: Dept. of Chemistry, Univ. of Texas at El Paso, U.S.A.
- 中文摘要: Substitution-inert metal complexes, (Co(edda)(H/sub 2 /O)/sub 2/)sup +/, (Co(edda)(en))/sup +/, (Co(edda)(dmen))/sup +/,(Co(en)/sub 2/(gly))/sup 2+/, (Co(en)/sub 2/(acac))/sup 2+/, and (Co(trien)(gly))/sup 2+/in their nitrate salt solutions are used as eluents in nonsuppressed cation chromatography ( where edda = ethylenediamine-N,N'-diacetic acid, en = ethylenediamine, dmen = N,N'-dimethylethylenediamine, gly = glycine, acac = acetylacetone, and trien = triethylenetetraamine). It is found that all the mono- and di-valent charged complexes can be used to separate alkali and alkaline earth metal cations, respectively. The separations for monovalent cations are sometimes comparable to those using ultrapure HNO/sub 3/solutions. However, the divalent Ca/sup 2+/ and Sr/sup 2+/ions cannot be resolved using the metal complex eluents. On the other hand, a selected, direct non- suppressed IC separation of zinc(II) and cadmium(II) ions is demonstrated for the first time using a substitution-inert metal complex eluent and a conductivity detector. Comparisons of these eluents with those reported previously, i.e. HNO/sub 3/ and ethylenediammonium salt solution are made and explanations are proposed to account for the different selectivities observed where possible. The future development of this technique is also briefly discussed.
- 英文摘要: --
- 中文關鍵字: Substitution-Inert Metal Complex Eluents; Non-Suppressed Cation Chromatography
- 英文關鍵字: 惰取代性金屬錯化合物洗提液;非壓抑性陽離子層析法