In situ hydrothermal growth of ytterbium-based metal–organic framework on stainless steel wire for solid-phase microextraction of polycyclic aromatic hydrocarbons from environmental samples

Volatile compounds generated by fish spoilage were investigated by an inside-needle microextraction method followed by gas chromatography with flame ionization detection and gas chromatography with mass spectrometry. The inside of a needle was coated with an adsorbent to extract the target analytes from the headspace of the sample. The examined adsorbents included β-cyclodextrin, polystyrene resin cross-linked with 1% divinylbenzene, and polyethylene glycol mixed with polydimethylsiloxane. The investigated volatile compounds generated by fish spoilage were acetone, 2-butanone, 2-butanol, 2-propanol, dimethyl disulfide, acetic acid, and benzaldehyde. The analysis conditions for the sorption and desorption processes were optimized. Each optimized condition was validated by determining the limit of detection and the limit of quantitation from the calibration curves, as well as the recovery, reproducibility, and concentration factors. As a result, all of the fabricated needles afforded successful recoveries, above 90%, with relative standard deviations below 10%. In particular, cyclodextrin and polystyrene resin cross-linked with 1% divinylbenzene mixed with polydimethylsiloxane show good sensitivities and concentration factors for the standard volatile compounds. The storage of fresh mackerel and salted mackerel at room temperature for 14 days caused the concentrations of dimethyl disulfide and acetic acid to significantly increase while those of acetone, 2-butanone, 2-propanol, and 2-butanol changed only slightly.

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“…The EF of each method is calculated by Eq. .

EF = ({normalA}_{1} / {normalA}_{0}) γ_{sample concentration dilution factor}

…”

Section: Resultsmentioning

confidence: 99%

Sol–gel‐adsorbent‐coated extraction needles to detect volatile compounds in spoiled fish

Bang

Hwang

Lee

et al. 2017

J of Separation Science

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“…In situ growth is popular for preparing MOF-based SPME fibers [19,148,150,152,157,158,161]. Generally, the substrates needed to be etched to provide rough surfaces to enhance the adhesive strength of the coatings.…”

Section: Mofsmentioning

confidence: 99%

Development of Novel Solid-Phase Microextraction Fibers

Xu¹,

Ouyang²

2016

Solid Phase Microextraction

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The basic principles for the preparation of SPME fibers with satisfying selectivity, sensitivity, loading capacities and stabilities are summarized here in terms of the physicochemical properties of the coating materials and the supporting substrates of SPME fibers. While the main part of this chapter focuses on the advances in developing the most widely used coating materials, including ionic liquids, polymeric ionic liquids, carbonaceous materials, molecularly imprinted polymers, metal-organic frameworks, metals and metal oxides, conductive polymers, modified silica, as well as their composites, into SPME fibers. Meanwhile, the applications of novel SPME fibers in analyzing diverse analytes in different sample matrices are briefly reviewed, including the emerging applications of SPME in the extraction of bioactive compounds in living animals and plants.Keywords SPME fiber coating Á Ionic liquid Á Polymeric ionic liquid Á Graphene Á Carbon nanotube Á Molecularly imprinted polymer Á Metal-organic framework Á Metal and metal oxide Á Conductive polymer Á Modified silica IntroductionThe outstanding features of solid-phase microextraction (SPME), including rapid and simple operating procedures, slight disturbance to investigated systems, reduced consumption of solvents, and feasibility of automation, continuously inspire new explorations of SPME in various frontiers, such as metabolome detection [1], central nervous systems studies [2], pharmacokinetic studies [3], environmental analysis [4], and food analysis [5]. On the other hand, the diversity of the physicochemical properties of the target analytes and the complicity of the sample matrices require the development of new SPME devices to nourish the new

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“…Li et al. grew Yb‐MOF on the fiber through in situ growth method, then applied it as headspace‐SPME fiber to extract PAHs from environmental samples with large enrichment factors (130–2288), low LODs (0.07–1.67 ng/L), and good recoveries (69.3–114.4%). Huo et al.…”

Section: Applications Of Metal–organic Framework In Pretreatment Tecmentioning

confidence: 99%

Recent applications of metal–organic frameworks in sample pretreatment

Wang

Rui

2017

J of Separation Science

100

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Metal-organic frameworks are promising materials in diverse analytical applications especially in sample pretreatment by virtue of their diverse structure topology, tunable pore size, permanent nanoscale porosity, high surface area, and good thermostability. According to hydrostability, metal-organic frameworks are divided into moisture-sensitive and water-stable types. In the actual applications, both kinds of metal-organic frameworks are usually engineered into hybrid composites containing magnetite, silicon dioxide, graphene, or directly carbonized to metal-organic frameworks derived carbon. These metal-organic frameworks based materials show good extraction performance to environmental pollutants. This review provides a critical overview of the applications of metal-organic frameworks and their composites in sample pretreatment modes, that is, solid-phase extraction, magnetic solidphase extraction, micro-solid-phase extraction, solid-phase microextraction, and stir bar solid extraction.

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In situ hydrothermal growth of ytterbium-based metal–organic framework on stainless steel wire for solid-phase microextraction of polycyclic aromatic hydrocarbons from environmental samples

Cited by 84 publications

References 32 publications

Sol–gel‐adsorbent‐coated extraction needles to detect volatile compounds in spoiled fish

Sol–gel‐adsorbent‐coated extraction needles to detect volatile compounds in spoiled fish

Development of Novel Solid-Phase Microextraction Fibers

Recent applications of metal–organic frameworks in sample pretreatment

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