title: High-performance liquid chromatography separation of phthalate acid esters with a MIL-53(Al)-packed column.
abstract: In this study, a MIL-53(Al)-packed column was successfully prepared and firstly applied to separate phthalate acid esters (butyl benzyl phthalate, di-n-butyl phthalate, diethyl phthalate, bis(2-ethylhexyl) phthalate, and dimethyl phthalate). Their baseline separation could be achieved within 12 min with a mobile phase of methanol/H2 O ratio at 92:8, and the temperature and flow rate was 40°C and 0.6 mL/min, respectively. The stacking effect and electrostatic force were the key factors in the separation. Moreover, there was a substantial linear relation between the peak height, peak area, and the analyte mass, and the relative standard deviations of retention time, peak height, peak area, and half peak width for five replicate separations of the analytes were within the ranges 0.31-0.88%, 0.72-1.52%, 1.33-1.53%, and 0.46-0.95%, respectively. The results of the calculation of the thermodynamics parameters showed that the separation of phthalate acid esters was controlled by both enthalpy change (ΔH) and entropy change (ΔS).
authors.affiliation: Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing, P. R., China.|Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, P. R., China.
authors.forename: Lun
authors.initials: L
authors.lastname: Shu
authors.affiliation: Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing, P. R., China.
authors.forename: Sha
authors.initials: S
authors.lastname: Chen
authors.affiliation: Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, P. R., China.
authors.forename: Wei-Wei
authors.initials: WW
authors.lastname: Zhao
authors.affiliation: Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, P. R., China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Bai
authors.affiliation: Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing, P. R., China.
authors.forename: Xing-Chen
authors.initials: XC
authors.lastname: Ma
authors.affiliation: Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing, P. R., China.|Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, P. R., China.
authors.forename: Xiao-Xin
authors.initials: XX
authors.lastname: Li
authors.affiliation: Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, P. R., China.
authors.forename: Jian-Rong
authors.initials: JR
authors.lastname: Li
authors.affiliation: Earth and Environment Engineering Department, Columbia University, New York, USA.
authors.forename: P
authors.initials: P
authors.lastname: Somsundaran
keywords: High-performance liquid chromatography; Metal-organic frameworks; Phthalic acid esters; Stationary phases