Computer-aided design of magnetic dummy molecularly imprinted polymers for solid-phase extraction of ten phthalates from food prior to their determination by GC-MS/MS
文献类型： 外文期刊
作者： Lu, Chunxia 1 ; Tang, Zonggui 2 ; Gao, XiaoXu 1 ; Ma, Xiaomei 3 ; Liu, Changbin 3 ;
作者机构： 1.Yangtze Normal Univ, Life Sci & Technol Inst, Chongqing 408100, Peoples R China
2.Xinjiang Acad Agr & Reclamat Sci, Anal & Testing Ctr, Shihezi 832000, Peoples R China
3.Xinjiang Acad Agr & Reclamat Sci, Key Labs Sheep Breeding & Reproduce, Wuyi Rd 221, Shihezi 832000, Peoples R China
关键词： Phthalate esters; Molecular simulation; Quantum chemical calculations; Dummy template; Molecularly imprinted polymers; Surface imprinting; Magnetic solid-phase extraction; Adsorbent; Food analysis; Gas chromatography-tandem mass spectrometry
期刊名称：MICROCHIMICA ACTA （ 影响因子：5.833； 五年影响因子：5.357 ）
ISSN： 0026-3672
年卷期： 2018 年 185 卷 8 期
页码：
收录情况： SCI
摘要： Magnetic dummy molecularly imprinted polymers (MDMIPs) were prepared by combining the surface imprinting technique with computer simulation for selective recognition of phthalate esters (PAEs). A computational study based on the density functional theory was performed to evaluate the template-monomer geometry and interaction energy in the prepolymerization mixture. The MDMIPs were characterized by transmission electron microscopy, scanning electron microscopy, vibrating sample magnetometry, X-ray diffraction, and Fourier transform infrared spectroscopy. They exhibited (a) high saturation magnetization of 53.14 emu g(-1) (leading to fast separation), and (b) large adsorption capacity, fast binding kinetics, and high selectivity for PAEs. Subsequently, a molecularly imprinted solid-phase extraction procedure followed by GC-MS was established for selective extraction and determination of 10 PAEs in food samples. Under the optimal experimental conditions, the response (peak area) was linear in the 0.5-100 ng mL(-1) concentration range. The limits of detection ranged from 0.15 to 1.64 ng g(-1). The method was applied to the determination of PAEs in spiked real samples. The recoveries for 10 PAEs from various foods were in the range of 73.7%-98.1%, with relative standard deviations of 1.7%-10.2%.
- 相关文献
作者其他论文 更多>>
-
Hydroxyapatite Nanoparticles Enhance In Vitro Maturation of Sheep Oocytes by Attenuating Oxidative Stress
作者：Zhou, Guizhen;Liu, Aiju;Bai, Jiachen;Liu, Qian;Fu, Xiangwei;Li, Jun;Liu, Yucheng;Wang, Jingjing;Liu, Changbin;Guo, Yanhua;Wan, Pengcheng;Fu, Xiangwei
关键词：hydroxyapatite nanoparticles; in vitro maturation; oxidative stress; oocytes; sheep
-
A portable microfluidic chip-based fluorescent and colorimetric aptasensor combining recombinase polymerase amplification for bovine pregnancy-associated glycoproteins detection
作者：Feng, Jiaqi;Lin, Xianfeng;Kang, Lixin;Duan, Nuo;Wang, Zhouping;Wu, Shijia;Feng, Jiaqi;Lin, Xianfeng;Kang, Lixin;Duan, Nuo;Wang, Zhouping;Wu, Shijia;Duan, Nuo;Wang, Zhouping;Wu, Shijia;Lu, Chunxia;Lu, Chunxia;Liu, Changbin
关键词：Bovine milk monitoring; Microfluidic chip; Aptamer sensor; Recombinase polymerase amplification; Dual-mode detection
-
Differences in microRNA within plasma extracellular vesicles at various time points during early pregnancy in sheep revealed by high-throughput sequencing data
作者：Lv, Zhanmin;Zhang, Zhenliang;Liu, Yucheng;Wang, Jingjing;Liu, Weijun;Wan, Pengcheng;Ni, Jianhong;Liu, Changbin;Lv, Zhanmin;Zhang, Zhenliang;Liu, Yucheng;Wang, Jingjing;Liu, Weijun;Wan, Pengcheng;Ni, Jianhong;Liu, Changbin;Lu, Chunxia
关键词：Biomarker; Exosome; High-throughput sequencing; Pregnancy; MicroRNAs
-
Screening Verticillium wilt-resistant germplasm by monitoring the time-series chlorophyll content of cotton canopies via a UAV-based high-throughput platform
作者：Xu, Bowei;Yang, Jiajie;Liu, Le;Zhao, Rumeng;Li, Fuguang;Yang, Zuoren;Fan, Liqiang;Xu, Bowei;Yang, Jiajie;Chen, Deyong;Liu, Le;Zhao, Rumeng;Chen, Jieyin;Li, Fuguang;Yang, Zuoren;Fan, Liqiang;Chen, Deyong;Chen, Jieyin;Wang, Xuwen;Ma, Xiaomei;Ai, Xiantao;Yang, Zuoren
关键词：Cotton; Verticillium wilt; UAV; Chlorophyll content; Deep learning
-
Detection of acrylamide in food based on MIL-glucose oxidase cascade colorimetric aptasensor
作者：Guo, Kaixi;Lin, Xianfeng;Duan, Nuo;Wang, Zhouping;Wu, Shijia;Lu, Chunxia
关键词：Metal-organic frameworks; Glucose oxidase; Cascade; Aptamer; Acrylamide
-
Structural optimization, characterization, and evaluation of binding mechanism of aptamers against bovine pregnancy-associated glycoproteins and their application in establishment of a colorimetric aptasensor using Fe-based metal-organic framework as peroxidase mimic tags
作者：Lu, Chunxia;Lu, Chunxia;Zhang, Zhenliang;Tang, Zonggui;Liu, Changbin;Qin, Jiaxiang;Wu, Shijia
关键词：Pregnancy-associated glycoproteins; Binding mechanism; Molecular dynamics; Colorimetric aptasensor; Metal-organic frameworks
-
Electroporation Delivery of Cas9 sgRNA Ribonucleoprotein-Mediated Genome Editing in Sheep IVF Zygotes
作者：Pi, Wenhui;Feng, Guangyu;Liu, Minghui;Nie, Cunxi;Chen, Cheng;Wang, Jingjing;Wang, Limin;Wan, Pengcheng;Liu, Changbin;Zhou, Ping;Liu, Yi
关键词：electroporation; gene editing; CRISPR/Cas9; sheep zygotes; mutation efficiency; homologous recombination; in vitro fertilization (IVF)
