title: Preparation of decarboxylic-functionalized weak cation exchanger and application for simultaneous separation of alkali, alkaline earth and transition metals.
abstract: A novel weak cation exchanger (WCX) with dicarboxyl groups functionalized has been developed by clicking mercaptosuccinic acid onto silica gel. The simple synthesis starts with modification of silica gel with triethoxyvinylsilane, followed by efficient coupling vinyl-bonded silica with mercaptosuccinic acid via a "thiol-ene" click reaction. The obtained WCX demonstrated good separation and high selectivity towards common metals. Simultaneous separation of 10 alkali, alkaline earth and transition metals was achieved within 12min. Ion exchange and complex mechanism dominates the separation process. Its utility was demonstrated for determination of metals in tap water.
authors.affiliation: School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Yahui
authors.initials: Y
authors.lastname: Peng
authors.affiliation: School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Yihui
authors.initials: Y
authors.lastname: Gan
authors.affiliation: School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Chengxia
authors.initials: C
authors.lastname: He
authors.affiliation: School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China. Electronic address: bcyang@ecust.edu.cn.
authors.forename: Bingcheng
authors.initials: B
authors.lastname: Yang
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
authors.forename: Zhimou
authors.initials: Z
authors.lastname: Guo
authors.affiliation: School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China; Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
authors.forename: Xinmiao
authors.initials: X
authors.lastname: Liang
mesh_terms: D000468:Alkalies; D002412:Cations; D002852:Chromatography, Ion Exchange; D008673:Metals, Alkaline Earth / Q000737:chemistry*; D028561:Transition Elements / Q000737:chemistry*
chemical_list: D000468:Alkalies; D002412:Cations; D008673:Metals, Alkaline Earth; D028561:Transition Elements
keywords: Click chemistry; Ion chromatography; Mercaptosuccinic acid; Stationary phase; Weak cation exchanger