57346-U

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Mesoporous carbon-zirconium oxide nanocomposite derived from carbonized metal organic framework: A coating for solid-phase microextraction.

Mohammad Saraji et al.

Journal of chromatography. A, 1460, 33-39 (2016-07-28)

In this paper, a mesoporous carbon-ZrO2 nanocomposite was fabricated on a stainless steel wire for the first time and used as the solid-phase microextraction coating. The fiber was synthesized with the direct carbonization of a Zr-based metal organic framework. With

Influence of Winemaking Processing Steps on the Amounts of (E)-2-Decenal and Tridecane as Off-Odorants Caused by Brown Marmorated Stink Bug (Halyomorpha halys).

Pallavi Mohekar et al.

Journal of agricultural and food chemistry, 65(4), 872-878 (2017-01-10)

Brown marmorated stink bugs (BMSB) release stress compounds, tridecane and (E)-2-decenal, that affect final wine quality. This study focuses on determining the effect of wine processing on (E)-2-decenal and tridecane release in both red and white wines. Wines were produced

Polydopamine-based immobilization of a hydrazone covalent organic framework for headspace solid-phase microextraction of pyrethroids in vegetables and fruits.

Mingxue Wu et al.

Journal of chromatography. A, 1456, 34-41 (2016-06-19)

We designed a novel hydrazone covalent organic framework (COF) and developed a polydopamine (PDA) method to immobilize COF on a stainless steel fiber for headspace solid-phase microextraction (HS-SPME). A series of characterization studies was performed to validate the structure and

Poly(ionic liquids)-coated stainless-steel wires packed into a polyether ether ketone tube for in-tube solid-phase microextraction.

Juanjuan Feng et al.

Journal of separation science, 40(24), 4773-4779 (2017-10-19)

An in-tube solid-phase microextraction device was developed by packing poly(ionic liquids)-coated stainless-steel wires into a polyether ether ketone tube. An anion-exchange process was performed to enhance the extraction performance. Surface properties of poly(ionic liquids)-coated stainless-steel wires were characterized by scanning

A modified multiscale peak alignment method combined with trilinear decomposition to study the volatile/heat-labile components in Ligusticum chuanxiong Hort - Cyperus rotundus rhizomes by HS-SPME-GC/MS.

Min He et al.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1079, 41-50 (2018-02-14)

Head Space/Solid Phase Micro-Extraction (HS-SPME) coupled with Gas Chromatography/Mass Spectrometer (GC/MS) was used to determine the volatile/heat-labile components in Ligusticum chuanxiong Hort - Cyperus rotundus rhizomes. Facing co-eluting peaks in k samples, a trilinear structure was reconstructed to obtain the

Identification and characterization of the aroma-impact components of Thai fish sauce.

Nawaporn Lapsongphon et al.

Journal of agricultural and food chemistry, 63(10), 2628-2638 (2015-03-03)

Comprehensive analysis of the potent odorants in Thai premium fish sauce samples was accomplished by use of complementary volatile isolation methods combined with gas chromatography-olfactometry (GC-O) and GC-mass spectrometry. Odorants of intermediate and low volatility were determined by direct solvent

Headspace solid-phase micro-extraction and gas chromatography with micro-electron capture detection for the measurement of p,p'-DDE in rat whole blood and hair.

Takahiko Kusakabe et al.

The Tokai journal of experimental and clinical medicine, 28(3), 131-138 (2004-04-02)

A sensitive, specific, and reproducible capillary gas chromatography (GC) with micro-electron capture detection (micro-ECD) method using headspace solid-phase micro-extraction (HS-SPME) for the quantitative analysis of p,p'-DDE in rat whole blood and hair was developed. A 100 microm polydimethylsiloxane (PDMS) phase

Arabidopsis lipoxygenase 2 is essential for formation of green leaf volatiles and five-carbon volatiles.

Satoshi Mochizuki et al.

FEBS letters, 590(7), 1017-1027 (2016-03-19)

Plants biosynthesize a variety of bioactive lipid derivatives, such as green leaf volatiles (GLVs) and jasmonates (JAs). Here we identify a lipoxygenase 2 (LOX2) involved in GLV biosynthesis in Arabidopsis using mutant lines for each of the six LOX isoforms

Cannabinoids assessment in plasma and urine by high performance liquid chromatography-tandem mass spectrometry after molecularly imprinted polymer microsolid-phase extraction.

Juan Sánchez-González et al.

Analytical and bioanalytical chemistry, 409(5), 1207-1220 (2016-11-07)

A molecularly imprinted polymer (MIP) selective for cannabinoids [Δ

A porous carbon derived from amino-functionalized material of Institut Lavoisier as a solid-phase microextraction fiber coating for the extraction of phthalate esters from tea.

Weiqian Liang et al.

Journal of separation science, 39(7), 1331-1338 (2016-02-04)

In this work, a porous carbon derived from amino-functionalized material of Institut Lavoisier (C-NH2 -MIL-125) was prepared and coated onto a stainless-steel wire through sol-gel technique. The coated fiber was used for the solid-phase microextraction of trace levels of phthalate

Polydopamine-reinforced magnetization of zeolitic imidazolate framework ZIF-7 for magnetic solid-phase extraction of polycyclic aromatic hydrocarbons from the air-water environment.

Suling Zhang et al.

Journal of chromatography. A, 1452, 18-26 (2016-05-29)

Zeolitic imidazolate frameworks (ZIFs) consist of metal nodes connected to imidazolate linkers, having both the properties of metal-organic frameworks (MOFs) and inorganic zeolites, such as controllable pore sizes, high porosity and surface areas, as well as exceptional thermal and chemical

SPME collection and GC-MS analysis of volatiles emitted during the attack of male Polygraphus poligraphus (Coleoptera, Curcolionidae) on Norway spruce.

Rizan Rahmani et al.

Zeitschrift fur Naturforschung. C, Journal of biosciences, 70(9-10), 265-273 (2015-10-16)

Tree mortality caused by bark beetles has increased in recent decades in both Europe and North America. In a large recent outbreak in central Sweden the bark beetle Polygraphus poligraphus was often found together with the spruce bark beetle Ips

Analysis of honeybush tea (Cyclopia spp.) volatiles by comprehensive two-dimensional gas chromatography using a single-stage thermal modulator.

Gaalebalwe Ntlhokwe et al.

Analytical and bioanalytical chemistry, 409(17), 4127-4138 (2017-04-19)

The applicability of comprehensive two-dimensional gas chromatography (GC×GC) using a single-stage thermal modulator was explored for the analysis of honeybush tea (Cyclopia spp.) volatile compounds. Headspace solid phase micro-extraction (HS-SPME) was used in combination with GC×GC separation on a non-polar

Electrospun nanostructured polystyrene as a new coating material for solid-phase microextraction: Application to separation of multipesticides from honey samples.

Sara Zali et al.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1002, 387-393 (2015-09-13)

For the first time, electrospun polystyrene nanostructure was used as coating material on a stainless steel wire for solid-phase microextraction. Surface morphology of the coating was studied by scanning electron microscopy which showed the formation of nanofibers on the wire.

Microwave-assisted extraction and high-throughput monolithic-polymer-based micro-solid-phase extraction of organophosphorus, triazole, and organochlorine residues in apple.

Habib Bagheri et al.

Journal of separation science, 39(3), 576-583 (2015-11-29)

A high-throughput micro-solid-phase extraction device based on a 96-well plate was constructed and applied to the determination of pesticide residues in various apple samples. Butyl methacrylate and ethylene glycol dimethacrylate were copolymerized as a monolithic polymer and placed in the

SDE and SPME Analysis of Flavor Compounds in Jin Xuan Oolong Tea.

Ershad Sheibani et al.

Journal of food science, 81(2), C348-C358 (2016-01-13)

Simultaneous distillation-extraction (SDE) and solid phase micro extraction (SPME) are procedures used for the isolation of flavor compounds in foods. The purpose of this study was to optimize SDE conditions (solvent and time) and to compare SDE with SPME for

[Application of solid-phase microextraction technique to the detection of amphetamines in urine by GC].

W Liu et al.

Fa yi xue za zhi, 15(2), 89-90 (2003-01-23)

A simple and rapid detection of nine amphetamines co-existing in urine was described. In the test, the method of solid-phase micro-extraction (SPME) by GC technique was used. Urine (1.0 ml), NaCl (0.3 g) and 4-phenylbutylamine (internal standard) were added into

Profiling the scent of weathered training aids for blood-detection dogs.

Baree Chilcote et al.

Science & justice : journal of the Forensic Science Society, 58(2), 98-108 (2018-03-13)

At outdoor crime scenes, cadaver-detection and blood-detection dogs may be tasked with locating blood that is days, weeks or months old. Although it is known that the odour profile of blood will change during this time, it is currently unknown

Characterization of the Authenticity of Pasta di Gragnano Protected Geographical Indication Through Flavor Component Analysis by Gas Chromatography-Mass Spectrometry and Chemometric Tools.

Vanessa Giannetti et al.

Journal of AOAC International, 99(5), 1279-1286 (2016-09-14)

An authentication study based on headspace solid-phase microextraction/GC-MS was performed with a set of 60 samples representative of traditional "Pasta di Gragnano protected geographical indication (PGI)" and the most common Italian pasta brands. Multivariate chemometric tools were used to classify

Direct synthesis of nitrogen-doped graphene on platinum wire as a new fiber coating method for the solid-phase microextraction of BXes in water samples: Comparison of headspace and cold-fiber headspace modes.

Elham Memarian et al.

Analytica chimica acta, 935, 151-160 (2016-08-21)

In this work, a new solid-phase microextraction fiber was prepared based on nitrogen-doped graphene (N-doped G). Moreover, a new strategy was proposed to solve problems dealt in direct coating of N-doped G. For this purpose, first, Graphene oxide (GO) was

Fast analysis of volatile compounds from Lippia citriodora with nanoporous aluminum wire as solid-phase microextraction fibres.

Mohammad Nemati Kharajuo et al.

Natural product research, 31(3), 351-354 (2016-09-23)

In this study, the efficiency of nanoporous aluminium wires as fibres for headspace solid-phase microextraction (HS-SPME) of volatile compounds from Lippia citriodora was investigated and compared with two anodised methods. The prepared fibres are durable with very good chemical and

Sample preparation with solid phase microextraction and exhaustive extraction approaches: Comparison for challenging cases.

Ezel Boyacı et al.

Analytica chimica acta, 873, 14-30 (2015-04-26)

In chemical analysis, sample preparation is frequently considered the bottleneck of the entire analytical method. The success of the final method strongly depends on understanding the entire process of analysis of a particular type of analyte in a sample, namely:

Determination of transformation products of unsymmetrical dimethylhydrazine in water using vacuum-assisted headspace solid-phase microextraction.

Dina Orazbayeva et al.

Journal of chromatography. A, 1555, 30-36 (2018-05-03)

A new, sensitive and simple method based on vacuum-assisted headspace solid-phase microextraction (Vac-HSSPME) followed by gas chromatography-mass-spectrometry (GC-MS), is proposed for the quantification of rocket fuel unsymmetrical dimethylhydrazine (UDMH) transformation products in water samples. The target transformation products were: pyrazine

Laser desorption sample transfer for gas chromatography/mass spectrometry.

Chinthaka A Seneviratne et al.

Rapid communications in mass spectrometry : RCM, 30(1), 89-94 (2015-12-15)

Ambient mass spectrometry can detect small molecules directly, but complex mixtures can be a challenge. We have developed a method that incorporates small molecule separation based on laser desorption with capture on a solid-phase microextraction (SPME) fiber for injection into

Emission rates of selected volatile organic compounds from skin of healthy volunteers.

Paweł Mochalski et al.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 959, 62-70 (2014-04-29)

Gas chromatography with mass spectrometric detection (GC-MS) coupled with solid phase micro-extraction as pre-concentration method (SPME) was applied to identify and quantify volatile organic compounds (VOCs) emitted by human skin. A total of 64 C4-C10 compounds were quantified in skin

Barley husk carbon as the fiber coating for the solid-phase microextraction of twelve pesticides in vegetables prior to gas chromatography-mass spectrometric detection.

Weiqian Liang et al.

Journal of chromatography. A, 1491, 9-15 (2017-02-27)

In this work, a barley husk biomaterial was successfully carbonized by hydrothermal method. The carbon had a high specific surface area and good stability. It was coated onto a stainless steel wire through sol-gel technique to prepare a solid-phase microextraction

Semi-micro solid-phase extraction of organic compounds from aqueous and biological samples.

D L Mayer et al.

Journal of chromatography. A, 773(1-2), 189-197 (1997-06-27)

A technique is described for performing solid-phase extractions on a semi-micro scale. Thin membrane disks 4 mm in diameter containing lightly sulfonated polystyrene or Silicalite particles are placed in the hub of a syringe needle. Aqueous samples (1-6 ml) are

Identification of unwanted photoproducts of cosmetic preservatives in personal care products under ultraviolet-light using solid-phase microextraction and micro-matrix solid-phase dispersion.

Gerardo Alvarez-Rivera et al.

Journal of chromatography. A, 1390, 1-12 (2015-03-12)

The photochemical transformation of widely used cosmetic preservatives including benzoates, parabens, BHA, BHT and triclosan has been investigated in this work applying an innovative double-approach strategy: identification of transformation products in aqueous photodegradation experiments (UV-light, 254nm), followed by targeted screening

Solid-phase micro-extraction procedure for the determination of 1,3-dichloro-2-propanol in water by on-fibre derivatisation with bis(trimethylsilyl)trifluoroacetamide.

Antonia María Carro et al.

Analytical and bioanalytical chemistry, 394(3), 893-901 (2009-04-11)

The headspace solid-phase micro-extraction technique with on-fibre derivatisation followed by gas chromatography-tandem mass spectrometry has been evaluated for the analysis of 1,3-dichloro-2-propanol in water. An asymmetric factorial design has been performed to study the influence of five experimental factors: extraction

Hyper-crosslinked polymer nanoparticles as the solid-phase microextraction fiber coating for the extraction of organochlorines.

Wenchang Wang et al.

Journal of chromatography. A, 1556, 47-54 (2018-05-08)

A hyper-crosslinked polymer benzenedimethanol (HCP-BDM) was synthesized and explored as a solid-phase microextraction (SPME) fiber coating material. To prepare the HCP-BDM, 1,4-benzenedimethanol monomer was self-condensed via a simple Friedel-Crafts alkylation reaction. The physical-chemical properties of the HCP-BDM material were characterized

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