title: Hydrothermal carbonaceous sphere based stationary phase for anion exchange chromatography.
abstract: Monodisperse carbonaceous spheres produced by the hydrothermal carbonization of sucrose were first applied as green stationary phase for ion chromatography after quaternization. Depending on the polycondensation of methylamine and 1,4-butanediol diglycidyl ether, polymer containing quaternary ammonium groups were facilely grafted onto the surfaces of hydrothermal carbonaceous spheres (HCSs). The quaternized HCSs with different number of polyelectrolyte layers were characterized by scanning electron microscopy, brunauer-emmett-teller, fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis and elemental analysis. The measurements of breakthrough curves demonstrated that more layers of grafted polyelectrolyte resulted in higher anion exchange capacity of stationary phase. With good stability, common inorganic anions, monocarboxylic acids, polarizable anions and carbohydrates were effectively separated on the stationary phases, respectively. The high hydrophilicity of HCS surface afforded excellent peak symmetry for all analytes. Furthermore, high-capacity HCSs stationary phase was successfully applied to detect fluoride in tea samples.
authors.affiliation: Department of Chemistry, Xixi Camp us, Zhejiang University, Hangzhou 310028, China.
authors.forename: Qiming
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: Zhejiang Institute of Geology and Mineral Resources, Hangzhou 310007, Zhejiang, China.
authors.forename: Shuchao
authors.initials: S
authors.lastname: Wu
authors.affiliation: Department of Chemistry, Xixi Camp us, Zhejiang University, Hangzhou 310028, China.
authors.forename: Peimin
authors.initials: P
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, Xixi Camp us, Zhejiang University, Hangzhou 310028, China. Electronic address: zhuyan@zju.edu.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhu
mesh_terms: D002072:Butylene Glycols / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D002852:Chromatography, Ion Exchange / Q000379:methods*; D008744:Methylamines / Q000737:chemistry; D013696:Temperature
chemical_list: D002072:Butylene Glycols; D008744:Methylamines; D002244:Carbon; C027451:methylamine; C014376:1,4-bis(2,3-epoxypropoxy)butane
keywords: Carbohydrates; Carbonaceous spheres; Grafted stationary phase; Hydrothermal carbonization; Ion chromatography; Polarizable anions