Recent advances of ionic liquids in sample preparation

Feng, Juanjuan; Loussala, Herman Maloko; Han, Shuhua; Ji, Xiangping; Li, Chunying; Sun, Min

doi:10.1016/j.trac.2020.115833

Cited by 123 publications

(34 citation statements)

References 124 publications

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“…In this way, improvements in their sensitivity and selectivity to the extraction of the different analytes can be achieved. One of these desired enhancements is obtained by combining the ILs with GBMs, owing to their different types of chemical interactions with the analytes (e.g., n-π, π-π, hydrogen bonding, dipolar, ionic charge/charge) (Chen Y. et al, 2016 ; Feng et al, 2020 ). For these reasons, IL-GBMs present excellent extraction efficiency for a wide variety of analytes in several complex matrices (e.g., environmental, food, drinks, biological, and among others), as presented.…”

Section: Anchored Graphene-based Materialsmentioning

confidence: 99%

The Current Role of Graphene-Based Nanomaterials in the Sample Preparation Arena

et al. 2020

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Since its discovery in 2004 by Novoselov et al., graphene has attracted increasing attention in the scientific community due to its excellent physical and chemical properties, such as thermal/mechanical resistance, electronic stability, high Young's modulus, and fast mobility of charged atoms. In addition, other remarkable characteristics support its use in analytical chemistry, especially as sorbent. For these reasons, graphene-based materials (GBMs) have been used as a promising material in sample preparation. Graphene and graphene oxide, owing to their excellent physical and chemical properties as a large surface area, good mechanical strength, thermal stability, and delocalized π-electrons, are ideal sorbents, especially for molecules containing aromatic rings. They have been used in several sample preparation techniques such as solid-phase extraction (SPE), stir bar sorptive extraction (SBSE), magnetic solid-phase extraction (MSPE), as well as in miniaturized modes as solid-phase microextraction (SPME) in their different configurations. However, the reduced size and weight of graphene sheets can limit their use since they commonly aggregate to each other, causing clogging in high-pressure extractive devices. One way to overcome it and other drawbacks consists of covalently attaching the graphene sheets to support materials (e.g., silica, polymers, and magnetically modified supports). Also, graphene-based materials can be further chemically modified to favor some interactions with specific analytes, resulting in more efficient hybrid sorbents with higher selectivity for specific chemical classes. As a result of this wide variety of graphene-based sorbents, several studies have shown the current potential of applying GBMs in different fields such as food, biological, pharmaceutical, and environmental applications. Within such a context, this review will focus on the last five years of achievements in graphene-based materials for sample preparation techniques highlighting their synthesis, chemical structure, and potential application for the extraction of target analytes in different complex matrices.

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Section: Anchored Graphene-based Materialsmentioning

confidence: 99%

The Current Role of Graphene-Based Nanomaterials in the Sample Preparation Arena

et al. 2020

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“…The development of efficient sorbents is very important for SPME. For several decades, various materials have been applied to the extraction coating such as mesoporous materials [7][8][9], ionic liquids [10,11], carbon materials [12][13][14], metal oxides [15][16][17], aerogels [18,19], metal organic frameworks [20,21], and so on. There are certain common characteristics in excellent extraction coatings such as large specific surface, high adsorption capacity, good selectivity, and well durability.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotubes functionalized mesoporous silica for in‐tube solid‐phase microextraction of polycyclic aromatic hydrocarbons

Loussala

Feng

Han

et al. 2020

J of Separation Science

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A mesoporous silica was functionalized by carbon nanotubes to enhance the extraction performance. The mesoporous material was coated on stainless steel wires, and three wires were inserted inside of a polyetheretherketone tube for in‐tube solid‐phase microextraction. The tube was coupled to high‐performance liquid chromatography with diode array detection to obtain online analytical system, then its extraction performance was evaluated using eight polycyclic aromatic hydrocarbons as the targets. In order to good sensitivity and accuracy, four conditions were optimized such as sampling volume, sampling rate, methanol content in the sample, and desorption time. Under the optimum conditions, an online analytical method was established and exhibited low limits of detection from 0.005 to 0.050 µg/L, wide linear range of 0.016‐20.00 µg/L with acceptable correlation coefficients in 0.9921‐0.9999, as well as large enrichment factors in the range of 311‐2412. The method was successfully applied to determine trace polycyclic aromatic hydrocarbons in some real water samples including, two kinds of bottled water, tap water, and river water, a few polycyclic aromatic hydrocarbons were detected but none quantified in these samples.

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“…The adsorbents or coating materials, affecting the sensitivity, selectivity, and repeatability of extraction process, are the key for SPME [6]. To date, diverse advanced materials have been used as sorbents for SPME, such as mesoporous materials [7][8][9], metal nanomaterials [10][11][12], graphene [13][14][15], ionic liquids [16,17], metal-organic frameworks (MOFs) [18], covalent organic frameworks (COFs) [19,20], aerogels [21], and so on. Among these materials, aerogels as new nanomaterials have received extensive attention of researchers from different fields because of attractive merits, such as three-dimensional (3D) network, high porosities (80-98%), low density (0.37-0.87 g/cm 3 ), controllable pore structures, large specific surface (1100 m 2 /g), and outstanding thermal and mechanical properties [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Application of biocharcoal aerogel sorbent for solid‐phase microextraction of polycyclic aromatic hydrocarbons in water samples

Feng

et al. 2020

J of Separation Science

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A facile method was introduced for preparing a biocharcoal aerogel, which was derived from pomelo peel as the only raw material. The inner spongy layer of pomelo peel was freeze-dried for maintaining three-dimensional structure and then carbonized under high temperature and oxygen-limited conditions. The morphological structure and graphitization degree of biocharcoal aerogel were characterized using a scanning electron microscope and Raman spectrum. After sifting and grinding, the biocharcoal aerogel as an adsorbent was coated onto the surface of stainless steel wires. Through placing the wires into a polyetheretherketone tube, the in-tube solid-phase microextraction device was obtained. Coupled with high-performance liquid chromatography, it exhibited good extraction performance for polycyclic aromatic hydrocarbons, then an online analytical method was established with low limits of detection (0.005-0.050 ng/mL), wide linear ranges (0.017-15 ng/mL) with superior correlation coefficients higher than 0.9990, high enrichment factors (1128-3425), and acceptable intra-and inter-day repeatabilities (relative standard deviations ≤ 6.7%, n = 3). The method was applied to detect polycyclic aromatic hydrocarbons in bottled water samples, environmental water samples, and soft drinks with satisfactory recoveries (83.3-120.9%). This research not only developed a new carbon aerogel but also evaluated its adsorption performance in sample preparation.

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Recent advances of ionic liquids in sample preparation

Cited by 123 publications

References 124 publications

The Current Role of Graphene-Based Nanomaterials in the Sample Preparation Arena

The Current Role of Graphene-Based Nanomaterials in the Sample Preparation Arena

Carbon nanotubes functionalized mesoporous silica for in‐tube solid‐phase microextraction of polycyclic aromatic hydrocarbons

Application of biocharcoal aerogel sorbent for solid‐phase microextraction of polycyclic aromatic hydrocarbons in water samples

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