title: Determination of phthalate esters in environmental water by magnetic Zeolitic Imidazolate Framework-8 solid-phase extraction coupled with high-performance liquid chromatography.
abstract: In this study, the magnetic Zeolitic Imidazolate Framework-8 (ZIF-8) microspheres were successfully synthesized and applied as an effective sorbent for preconcentration of several typical phthalate esters (PAEs) from environmental water samples. Firstly, the solvothermal treatment method was used for preparation of Fe3O4 nanoparticles. Then, mercaptoacetic acid (MAA) was served as the functionalized chemical to modify Fe3O4 nanoparticles. The Fe3O4@ZIF-8 core-shell microspheres were synthesized through coating the MAA-capped Fe3O4 nanoparticles with ZIF-8. By coupling magnetic solid-phase extraction (MSPE) with high-performance liquid chromatography (HPLC), a reliable, sensitive and cost-effective method for simultaneous determination of five main PAEs including dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-butyl phthalate (DBP), benzyl butyl phthalate (BBP), and dioctyl phthalate (DOP) was developed. Good linearity was observed in the range of 1.0-100.0μg/L. The limits of detection (S/N=3) and limits of quantification (S/N=10) were in the range of 0.08-0.24 and 0.3-0.8μg/L, respectively. The relative standard deviations were less than 5.5% and the accuracies of the method for the PAEs were in the range from 85.6% to 103.6%. Finally, the Fe3O4@ZIF-8 was successfully applied for rapid extraction of trace amounts of PAEs in environmental water samples.
authors.affiliation: Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu, PR China.
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Liu
authors.affiliation: Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu, PR China. Electronic address: sunzhiw@126.com.
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Sun
authors.affiliation: Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu, PR China.
authors.forename: Guang
authors.initials: G
authors.lastname: Chen
authors.affiliation: Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu, PR China.
authors.forename: Wanwan
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu, PR China.
authors.forename: Yiping
authors.initials: Y
authors.lastname: Cai
authors.affiliation: Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu, PR China.
authors.forename: Rongmei
authors.initials: R
authors.lastname: Kong
authors.affiliation: Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, PR China.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Wang
authors.affiliation: Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, PR China.
authors.forename: Yourui
authors.initials: Y
authors.lastname: Suo
authors.affiliation: Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu, PR China; Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, PR China; Key Laboratory of Pharmaceutical Intermediates and Natural Products, Qufu, PR China. Electronic address: jmyou6304@163.com.
authors.forename: Jinmao
authors.initials: J
authors.lastname: You
mesh_terms: D002851:Chromatography, High Pressure Liquid; D003993:Dibutyl Phthalate / Q000032:analysis; D004952:Esters; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry*; D008863:Microspheres; D009942:Organometallic Compounds / Q000737:chemistry*; D010795:Phthalic Acids / Q000032:analysis*; D052616:Solid Phase Extraction / Q000379:methods; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D004952:Esters; D007093:Imidazoles; D009942:Organometallic Compounds; D010795:Phthalic Acids; D014874:Water Pollutants, Chemical; C024629:dimethyl phthalate; D003993:Dibutyl Phthalate; C007379:diethyl phthalate; D052203:Ferrosoferric Oxide; C027561:butylbenzyl phthalate
keywords: High-performance liquid chromatography (HPLC); Magnetic solid-phase extraction (MSPE); Phthalate esters (PAEs); Zeolitic Imidazolate Framework-8 (ZIF-8)