Graphene oxide reinforced ionic liquid-functionalized adsorbent for solid-phase extraction of phenolic acids

被引：25

作者：

Hou, Xiudan ^{[1
,2
,4
]}

Lu, Xiaofeng ^{[1
,2
]}

Tang, Sheng ^{[3
]}

Wang, Licheng ^{[1
,2
]}

Guo, Yong ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, CAS Key Lab Chem Northwestern Plant Resources, Lanzhou 730000, Gansu, Peoples R China

[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Nat Med Gansu Prov, Lanzhou 730000, Gansu, Peoples R China

[3] Wuhan Inst Technol, Sch Chem & Environm Engn, Wuhan 430205, Hubei, Peoples R China

[4] Univ Chinese Acad Sci, Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES | 2018年 / 1072卷

基金：

中国国家自然科学基金;

关键词：

Adsorption energy; Graphene oxide; Ionic liquid; Phenolic acid; Solid-phase extraction; ORGANIC-COMPOUNDS; HYDROXYBENZOIC ACIDS; TRACE-ELEMENTS; SAMPLES; MICROEXTRACTION; POLYMERS; SOLVENTS; SILICA; TRENDS; FUTURE;

D O I：

10.1016/j.jchromb.2017.11.013

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

An environmental friendly sorbent of polymeric ionic liquids modified graphene oxide-grafted silica (PILs@GO@Sil) was synthesized for solid-phase extraction (SPE) of phenolic acids. The sorbent was prepared via a chemical layer-to-layer fabrication including amidation reaction, surface radical chain-transfer polymerization and in situ anion exchange. After modification with PILs, the silica surface had higher positive potential so that it would exhibit stronger electrostatic interaction for acidic compounds compared with GO@Sil. The adsorption performance of phenolic acids was investigated through the theoretical calculation and static, kinetic state adsorption experiments. Under the optimized conditions, wide linear ranges were obtained with correlation coefficients ranging from 0.9912 to 0.9998, and limits of detection were in the range of 0.20-0.50 mu g L-1. Compared with other reported methods, the proposed PILs@GO@Sil-SPE-HPLC showed higher extraction efficiency. Finally, the black wolfberry yogurt and urine were analyzed as real samples and good recoveries spiked with standard solution were obtained.

引用

页码：123 / 129

页数：7

共 34 条

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