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dc.contributor.authorChang, CEen_US
dc.contributor.authorChen, CYen_US
dc.contributor.authorChen, HYen_US
dc.date.accessioned2014-12-08T15:46:19Z-
dc.date.available2014-12-08T15:46:19Z-
dc.date.issued1999-08-01en_US
dc.identifier.issn0009-4536en_US
dc.identifier.urihttp://hdl.handle.net/11536/31163-
dc.description.abstractThe stability constants of several divalent first row transition and trivalent lanthanide metal complexes were determined by capillary electrophoresis (CE) methods. Four different approaches, i.e. direct formation, ligand exchange, metal exchange and metal-ligand double exchange were developed. To verify if these CE methods are indeed applicable, the stability constant of CuHEDTA was re-determined to be 17.47 +/- 0.20 (consistent with the published 17.50) using the CuEDTA and ZnHEDTA metal-ligand double exchange approach. The stability constants of lanthanide (Ce3+ and Eu3+) and transition metal (Ni2+ and Zn2+) complexes of an aminopolycarboxylate ligand, DO2A (1,7-dicarboxymethyl-1,4,7, 10-tetraazacyclododecane) were measured under the direct complex formation condition. The stability constant of the NiDO2A complex was determined by the ligand exchange method using 1,4,8,11-tetraazaundecane (2,3,2-tet) as the competing ligand. The stability constant of CuDO2A complex was determined by the metal exchange method using Zn2+ ion as the competing metal ion, and complex formation competitions of Ni2+ and Cu2+ between DO2A and 2,3,2-tet were studied by the metal-ligand double exchange method. Effects of experimental conditions and the advantages and limitations of these CE methods are discussed.en_US
dc.language.isoen_USen_US
dc.subjectstability constantsen_US
dc.subjectelectrophoresisen_US
dc.subjectlanthanidesen_US
dc.subjecttransition metal ionsen_US
dc.subjectDO2A (1,7-dicarboxymethyl-1,4,7,10-tetraazacyclododecaneen_US
dc.titleDetermination of stability constants of metal complexes by capillary electrophoresisen_US
dc.typeArticleen_US
dc.identifier.journalJOURNAL OF THE CHINESE CHEMICAL SOCIETYen_US
dc.citation.volume46en_US
dc.citation.issue4en_US
dc.citation.spage519en_US
dc.citation.epage528en_US
dc.contributor.department生物科技學系zh_TW
dc.contributor.departmentDepartment of Biological Science and Technologyen_US
dc.identifier.wosnumberWOS:000082243200003-
dc.citation.woscount6-
Appears in Collections:Articles