A superhydrophobic silica aerogel with high surface area for needle trap microextraction of chlorobenzenes

Baktash, Mohammad Yahya; Bagheri, Habib

doi:10.1007/s00604-017-2212-5

Cited by 34 publications

(4 citation statements)

References 21 publications

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“…In terms of more recent examples, NTDs employing a novel silica aerogel have also been used for the quantification of formaldehyde from indoor and outdoor air 310 and chlorobenzenes from a standard air sample. 311 A bondesil C18 packed NTD was applied to develop a quantitative and fully automated HS method for the determination of nine multiresidue musks from real wastewater treatment facility samples. 312 A high-resolution qualitative comparison of different marine diesel fuel emissions was accomplished by use of a tribed PDMS, Carbopack B, and Carboxen 1000 NTD, introduced into a unique GC/REMPI/ SPI-TOFMS, which is a form of NTD-GC enabled photoionization time-of-flight mass spectrometry.…”

Section: ■ Applicationsmentioning

confidence: 99%

“…In addition to these novel free versus total studies, NTD technologies have also been used on their own for the simple quantification of total pollutants in environmental air. In terms of more recent examples, NTDs employing a novel silica aerogel have also been used for the quantification of formaldehyde from indoor and outdoor air and chlorobenzenes from a standard air sample . A bondesil C18 packed NTD was applied to develop a quantitative and fully automated HS method for the determination of nine multiresidue musks from real wastewater treatment facility samples .…”

Section: Applicationsmentioning

confidence: 99%

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Advances in Solid Phase Microextraction and Perspective on Future Directions

et al. 2017

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Section: ■ Applicationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Advances in Solid Phase Microextraction and Perspective on Future Directions

et al. 2017

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“…The correlation of the surface wettability for the sorbent and the hydrophobicity of the target compounds in the sample matrix was further investigated. Superhydrophobic materials were expected to be the ideal sorbent for the enrichment of organic species with the least amount of polarity [ 40 , 41 , 42 ]. Herein, the lowest peak areas for five PAHs were obtained using the pristine hydrophilic wire (a) in Figure 9 .…”

Section: Resultsmentioning

confidence: 99%

Smart Titanium Wire Used for the Evaluation of Hydrophobic/Hydrophilic Interaction by In-Tube Solid Phase Microextraction

Zhang

Wang

et al. 2022

Molecules

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Evaluation of the hydrophobic/hydrophilic interaction individually between the sorbent and target compounds in sample pretreatment is a big challenge. Herein, a smart titanium substrate with switchable surface wettability was fabricated and selected as the sorbent for the solution. The titanium wires and meshes were fabricated by simple hydrothermal etching and chemical modification so as to construct the superhydrophilic and superhydrophobic surfaces. The micro/nano hierarchical structures of the formed TiO2 nanoparticles in situ on the surface of Ti substrates exhibited the switchable surface wettability. After UV irradiation for about 15.5 h, the superhydrophobic substrates became superhydrophilic. The morphologies and element composition of the wires were observed by SEM, EDS, and XRD, and their surface wettabilities were measured using the Ti mesh by contact angle goniometer. The pristine hydrophilic wire, the resulting superhydrophilic wire, superhydrophobic wire, and the UV-irradiated superhydrophilic wire were filled into a stainless tube as the sorbent instead of the sample loop of a six-port valve for on-line in-tube solid-phase microextraction. When employed in conjunction with HPLC, four kinds of wires were comparatively applied to extract six estrogens in water samples. The optimal conditions for the preconcentration and separation of target compounds were obtained with a sample volume of 60 mL, an injection rate of 2 mL/min, a desorption time of 2 min, and a mobile phase of acetonile/water (47/53, v/v). The results showed that both the superhydrophilic wire and UV-irradiated wire had the highest extraction efficiency for the polar compounds of estrogens with the enrichment factors in the range of 20–177, while the superhydrophobic wire exhibited the highest extraction efficiency for the non-polar compounds of five polycyclic aromatic hydrocarbons (PAHs). They demonstrated that extraction efficiency was mainly dependent on the surface wettability of the sorbent and the polarity of the target compounds, which was in accordance with the molecular theory of like dissolves like.

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“…Based on the unique advantages, different kind of aerogels have been developed and applied to many fields . Silica aerogels , graphene aerogels , and carbon aerogels were developed for SPME or SPE. Our group prepared an organic hybrid silica aerogel and an ionic liquid‐functionalized silica aerogel as the coatings for fiber SPME, and also produced melamine–formaldehyde aerogel , ionic liquid modified melamine–formaldehyde aerogel , and organic–inorganic hybrid silica aerogel for in‐tube SPME sorbents.…”

Section: Introductionmentioning

confidence: 99%

Resorcinol–formaldehyde aerogel coating for in‐tube solid‐phase microextraction of estrogens

Jiang

Sun

2020

J of Separation Science

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Resorcinol-formaldehyde aerogel coating was in situ prepared on the surface of basalt fibers. The aerogel coating is uniformly modified onto basalt fibers, and it is very porous according to the characterization by using scanning electron microscopy. An extraction tube was prepared for in-tube solid-phase microextraction by placing the aerogel-coated basalt fibers into a polyetheretherketone tube. To evaluate the extraction performance toward five estrogenic compounds, the tube was connected with high performance liquid chromatography, the important extraction and desorption conditions were investigated. An online analytical method for detection of estrogens was developed and presented low limits of detection (0.005-0.030 µg/L), wide linear ranges (0.017-20, 0.033-20, and 0.099-20 µg/L), good linearity (r > 0.9990), and satisfactory repeatability (relative standard deviation < 2.7%). The method was successfully applied to detect trace estrogens in real water samples (bottled pure water and bottled mineral water), satisfactory recoveries were ranged from 80 to 125% with two spiking levels of 2 and 6 µg/L. K E Y W O R D Saerogels, estrogens, high performance liquid chromatography, online analysis, solid-phase microextraction

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A superhydrophobic silica aerogel with high surface area for needle trap microextraction of chlorobenzenes

Cited by 34 publications

References 21 publications

Advances in Solid Phase Microextraction and Perspective on Future Directions

Advances in Solid Phase Microextraction and Perspective on Future Directions

Smart Titanium Wire Used for the Evaluation of Hydrophobic/Hydrophilic Interaction by In-Tube Solid Phase Microextraction

Resorcinol–formaldehyde aerogel coating for in‐tube solid‐phase microextraction of estrogens

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