• Crosslinked pyrrolidinium-based poly(ionic liquids) (Pyrr-PILs) were synthesized through a fast, simple, and solventless photopolymerization scheme, and tested as solid phase microextraction (SPME) sorbents. (ua.pt)
  • The performance of these PIL-based SPME fibers was evaluated using a mixture of eleven organic compounds with different molar volumes and chemical functionalities (alcohols, ketones, and monoterpenes). (ua.pt)
  • PANI/TiO2 nanorods -CFs were placed into a polyetheretherketone tube for solid-phase microextraction (SPME). (bvsalud.org)
  • Solid-phase microextraction (SPME) has gained widespread acceptance for analyte-matrix separation and preconcentration. (uni-regensburg.de)
  • SPME is a simple, effective adsorption/desorption technique that eliminates the need for solvents or complicated apparatus for concentrating volatile or non-volatile compounds in liquid samples or headspace. (uni-regensburg.de)
  • SPME is compatible with analyte separation/detection by gas chromatography and high performance liquid chromatography and provides linear results for a wide range of concentrations of analytes. (uni-regensburg.de)
  • It has GCMS liquid sample injection, Headspace injection, Solid Phase Micro Extraction (SPME) and DI Probe. (utm.my)
  • For Solid Phase Micro Extraction (SPME), it is an equilibrium sampling method and can be used for gases, solids (Headspace) and liquids (direct). (utm.my)
  • The aim of this study was to apply two analytical techniques for the untargeted analysis of selected e-liquids using Headspace - Solid Phase Microextraction - Gas Chromatography - Mass Spectrometry (HS-SPME-GCMS) and Liquid Chromatography coupled with Time-of-flight Mass Spectrometry (LC-ToF-MS). A 1 cm Stableflex DVB/CAR/PDMS fiber was used in the HS-SPME-GCMS analysis, providing the pre-concentration of volatile and semi-volatiles compounds. (coresta.org)
  • Each method used isotopically labelled compounds as internal standards (or a fiber performance check in the case of SPME). (coresta.org)
  • The efficiency of new coating was investigated for headspace solid-phase microextraction (SPME) of some environmentally important chlorophenols from aqueous samples followed by gas chromatography-mass spectrometry (GC-MS) analysis. (sharif.edu)
  • Solid Phase Micro Extraction (SPME) is a widely used technique for extraction and concentration of VOCs and SVOCs combined with GC/MS. Unique to absorption techniques for GC, SPME is suited for both small and larger molecules, and the absorption may take place in either the headspace or liquid. (msconsult.dk)
  • Our systems are optimized for performance and throughput in every step of the SPME process. (msconsult.dk)
  • Solid Phase Microextraction (SPME) is a sampling technique that uses a thin polymer fiber with a hydrophobic coating. (cdc.gov)
  • For the determination of the drugs diclofenac, 17 β-estradiol and caffeine, the solid phase microextraction method (SPME) will be developed and validated. (edu.br)
  • In-tube solid-phase microextraction (SPME) is an effective sample preparation technique that uses an open tubular fused-silica capillary column as an extraction device. (intechopen.com)
  • In-tube SPME is frequently combined with high-performance liquid chromatography (HPLC) using online column-switching techniques. (intechopen.com)
  • This short review covers the use of ionic liquids (ILs) and polymeric ionic liquids (PILs) in solid-phase microextraction (SPME) and dispersive liquid-liquid microextraction (DLLME). (chromatographyonline.com)
  • ILs and PILs have been previously applied in various extraction methods including single-drop microextraction (SDME), liquid-phase microextraction (LPME), solid-phase microextraction (SPME), dispersive liquid-liquid microextraction (DLLME), hollow fiber-supported liquid membrane extraction (HFSLME), and solid-phase extraction (SPE) (2-7). (chromatographyonline.com)
  • Gionfriddo's lab utilizes Thin-Film Solid Phase Micro Extraction (TF-SPME) to analyze these samples and has proved to be an effective method for analyzing complex samples. (gerstelus.com)
  • The GCMS-TQ8040 use AOC-5000 GC sample injection system that combines liquid, large volume and headspace injection in one single instrument. (utm.my)
  • For headspace mode of analysis, it permits the detection of volatile substances in a liquid or solid sample and minimizes column contamination. (utm.my)
  • In this technique, a phase-coated fused silica fiber is exposed to the headspace above the liquid or solid sample. (utm.my)
  • This type of chemical derivatization results in loss of ionic charge and reduced polarity making each mercury species molecule volatile so that it can escape the liquid phase and accumulate in the gaseous phase ("headspace") directly above the sample. (cdc.gov)
  • GenTech acquired a partnership with HTA which introduced multiple autosamplers that can combine functions of an autosampler for liquid, static headspace and solid-phase microextraction in a single unit. (gentechscientific.com)
  • x02212;octane, methylcyclopentane, and cyclohexane were measured in BAL fluid specimens by headspace solid-phase microextraction /gas chromatography/mass spectrometry. (cdc.gov)
  • Combining the tube to high performance liquid chromatography ( HPLC ), it was evaluated and displayed good extraction performance for several PAEs. (bvsalud.org)
  • In this paper, a new rapid and sensitive method based on sodium dodecyl sulfate modified Fe3O4@α-Linolenic acid nanocomposite combined with high-performance liquid chromatography-photo diode array detection (HPLC-PDA) has been proposed for the extraction and determination of tramadol (TRA) in water samples. (ac.ir)
  • Determination of Resveratrol in health foods and cosmetics using hollow fiber liquid-liquid microextraction coupled with HPLC. (pu.edu.tw)
  • The quantification will be done by the high performance liquid chromatography (HPLC-DAD) method. (edu.br)
  • Mercaptopropyl-functionalized stainless steel wire that was formed by co-condensation of tetramethoxysilane and 3-mercaptopropyltrimethoxysilane via a sol-gel process, which is followed by in situ surface radical chain-transfer polymerization of 1-vinyl-3-octylimidazolium hexafluorophosphate to result in polymeric ionic liquid modified stainless steel wire. (who.int)
  • We introduce two new dedicated certified reference materials (CRMs) and their analysis by GC using an ionic liquid capillary column, providing unique selectivity & stability. (sigmaaldrich.com)
  • Ionic liquids have tunable selectivity for specific classes of analytes, giving them distinct advantages over organic solvents. (chromatographyonline.com)
  • Over the past decade, ionic liquids (ILs) and polymeric ionic liquids (PILs) have been widely studied and applied in multiple areas of science and engineering. (chromatographyonline.com)
  • Analysis of Sulfonamides by Liquid Chromatography Mass Spectrometry and Capillary Electrophoresis Combing with Voltage-Assisted Liquid-Phase Microextraction. (pu.edu.tw)
  • Das, P., Gupta, M., Jain, A. and Verma, K. Single drop microextraction solid phase micro extraction gas chromatography- mass spectrometry for the determination of iodine by pharmaceuticals, iodized salt milk powder and vegetables involving conversion into 4-iodo-N, N-dimethylanilime. (i-scholar.in)
  • Our technical focus and capabilities include a range of extraction approaches, separation methods (solid and liquid phase), detection techniques, chromatographic techniques, spectroscopy (including accurate mass spectrometry, spectrofluorimetry, surface enhanced Raman spectroscopy and energy dispersive spectroscopy), and chemometric techniques for data handling and optimization. (bournemouth.ac.uk)
  • The main drawback related to those typical sorbents of solid-phase extraction (SPE) is the low selectivity or low binding efficiency [ 9 ]. (springeropen.com)
  • In addition, they have also analyzed metals and were able to achieve improved selectivity using special solid phases in the films. (gerstelus.com)
  • To better elucidate characteristic compounds present in e-liquids, and monitor potential changes to a product that occur during storage or between lot preparations, the determination of untargeted analytes is a valuable tool. (coresta.org)
  • Separation mechanism and determination of flavanones with capillary electrophoresis and high performance liquid chromatography. (pu.edu.tw)
  • Pereira, F.P., Ferreiros S., Lavilla, I. and Bendicho, Determination of iodates in waters by cuvetteless U.V-Vis microspectrophotometry after liquid phase microextraction. (i-scholar.in)
  • Gupta, M., Pillai, A.K., Singh, A., Jain A. and Verma, K.K. Salt assisted liquid-liquid microextraction for the determination of iodine in table salt by high performance liquid chromatoghraphy-diode array detection. (i-scholar.in)
  • Heat-shrink tubing as a solid-phase microextraction coating for the enrichment and determination of phthalic acid esters, J. Sep. (ecust.edu.cn)
  • Optimization of solid-phase microextraction conditions for determination of phenols. (novapublishers.com)
  • It provides a complete, up-to-date reference on analytical techniques such as gas chromatography, high-performance liquid chromatography, thin layer chromatography, and capillary electrophoresis as well as preparation techniques such as solid phase extraction and microextraction. (pharmatext.co.in)
  • In Situ Formation of a Relatively Transparent Ion-Associate Liquid Phase from an Aqueous Phase and Its Application to Microextraction/High-Performance Liquid Chromatography-Fluorescence Detection of Bisphenol A in Water. (nih.gov)
  • The total volumetric flow rate and the volumetric flow ratio of aqueous to organic phase were varied in the range of 1-8 mL min−1 and 0.5-2.0, respectively. (tue.nl)
  • First-principles approximations of the intrinsic catalytic reaction mechanisms towards different agents in Zr-MOFs are summarized, and developments in the structure-property relationships governing Zr-MOF design rules for efficient degradation in the aqueous and solid phases are discussed. (preprints.org)
  • Coupled with GC, extraction performance of the fiber was tested with phenols and polycyclic aromatic hydrocarbons as model analytes. (who.int)
  • Dispersive solid phase extraction (DSPE) has been used as a pretreatment technique for the analysis of several compounds. (hindawi.com)
  • This technique has allowed the development of alternative methodologies such as dispersive solid phase extraction (DSPE), which is based on the addition of a sorbent directly into the analytical solution followed by dispersion favoring the contact between the sorbent and the analytes [ 14 , 15 ]. (hindawi.com)
  • Such mixed solutions are also useful in separation science, as extraction solvents and in liquid chromatography. (scirp.org)
  • For example, the ternary mixed solutions were confirmed to work as a two-phase separation solution. (scirp.org)
  • A complete microextraction system was constructed and characterized including a T-junction (T-mixer) for slug flow generation, HCTDs as residence time units (RTUs), and a continuously working in-line phase splitter for an instantaneous phase separation. (tue.nl)
  • 10. Yahui Peng, Yanjie Hou, Feifang Zhang, Guobin Shen, B. C. Yang* , A hyperbranched polyethylenimine functionalized stationary phase for hydrophilic interaction liquid chromatography, Anal Bioanal Chem. (ecust.edu.cn)
  • Polyaniline/titanium dioxide nanorods functionalized carbon fibers for in-tube solid-phase microextraction of phthalate esters prior to high performance liquid chromatography-diode array detection. (bvsalud.org)
  • The Shimadzu GCMS-TQ8040 is the first Triple Quadrupole with Smart Productivity for high efficiency sample throughput, Smart Operation for quick and easy method development, and Smart Performance for low detection limits and Scan/MRM. (utm.my)
  • In this work, high-performance thin-layer chromatography (HPTLC) coupled with multivariate image analysis (MIA) is proposed as a fast and reliable tool for authentication and adulteration detection of Iranian saffron samples based on their HPTLC fingerprints. (sharif.edu)
  • Are metal-organic frameworks able to provide a new generation of solid-phase microextraction coatings? (google.es)
  • Preparation of a low bleeding polar stationary phase for hydrophilic interaction liquid chromatography, Talanta, 2018, 182, 500-504. (ecust.edu.cn)
  • It can be coupled to various chromatographic techniques, such as liquid chromatography , thin layer chromatography , gas chromatography , or inductively coupled plasma . (sigmaaldrich.com)
  • The combination of compounds identified in the different e-liquids by both techniques, present at different levels, create a unique and distinguishable fingerprint of each e-liquid. (coresta.org)
  • Low-bleed silica-based stationary phase for hydrophilic interaction liquid chromatography, Anal. (ecust.edu.cn)
  • She also mentions the development of a non-targeted method for liquid chromatography and the use of multidimensional GC x GC gas chromatography to identify even more analytes. (gerstelus.com)
  • The stationary phase is 5% Phenyl Polysilphenylene-siloxane. (utm.my)
  • The stationary phase is 100% Dimethyl Polysiloxane. (utm.my)
  • The stationary phase is 70% Cyanopropyl Polysilphenylene-siloxane. (utm.my)
  • The stationary phase is Polyethylene Glycol (PEG) in a Sol-Gel matrix. (utm.my)
  • The stationary phase is 14% Cyanopropylphenyl Polysiloxane. (utm.my)
  • Poly(vinyl alcohol)-cationic cellulose copolymer encapsulated SiO2 stationary phase for hydrophilic interaction liquid chromatography, RSC Adv. 2017, 7, 21336-21341. (ecust.edu.cn)
  • A positively charged porous graphitic carbon stationary phase for hydrophilic interaction liquid chromatography, Talanta, 2017, 164, 159-163. (ecust.edu.cn)
  • Poly(vinyl alcohol) Modified Porous Graphitic Carbon Stationary Phase for Hydrophilic Interaction Liquid Chromatography, Anal. (ecust.edu.cn)
  • An arginine-functionalized stationary phase for hydrophilic interaction liquid chromatography. (ecust.edu.cn)
  • Analysis of quinolones by voltage-assisted liquid-phase microextraction combined with LC-MS. J. Sep. (pu.edu.tw)
  • This is a much-used accessory for the analysis of small aldehydes using the oxime formation by PFPBHA reagent, but may be used for all reagents which react fast in the gas phase, e.g. (msconsult.dk)
  • This technique is based on the dispersion of a solid sorbent in liquid samples in the extraction isolation and clean-up of different analytes from complex matrices. (hindawi.com)
  • Compared with bare CFs, TiO2 nanorods and PANI, PANI/TiO2 nanorods presented best performance, attributed to the unique advantages between high surface area of TiO2 nanorods and multiple adsorption interactions (like π-π stacking, hydrogen bond ) of PANI. (bvsalud.org)
  • We developed, optimized and validated a fast analytical cycle using high throughput bar adsorptive microextraction and microliquid desorption (HT-BAμE-μLD) for the extraction and desorption of ketamine and norketamine in up to 100 urine samples simultaneously, resulting in an assay time of only 0.45 min/sample. (mdpi.com)
  • 1999 - GenTech continued to focus on hiring employees with chemistry and biology backgrounds which allowed for the addition of Liquid Chromatography instruments to GenTech's list of supported systems. (gentechscientific.com)
  • To improve extraction performance of carbon fibers (CFs) towards phthalate esters (PAEs), titanium dioxide (TiO2) nanorods array was in-situ grown on the surface of CFs, then polyaniline (PANI) was used to modify it. (bvsalud.org)
  • Besides of satisfactory durability, the material also exhibited superior extraction performance than some materials. (bvsalud.org)
  • A complete, continuously operated microextraction system was developed for single-stage applications, where very small liquid hold-ups and longer residence times are required due to slower mass transfer rates. (tue.nl)
  • The specific microfluidic flow, TRDF, was applied to capillary liquid chromatography [8] and micro-extraction [9]. (scirp.org)
  • For this study five replicates of four different e-liquids were evaluated. (coresta.org)
  • For GCMS liquid sample injection, it use liquid injection through a self-sealing septum into a heated split or splitless injection port. (utm.my)
  • 2.9 Obtaining the Sample-Is It Solid, Liquid, or Gas? (pubmatch.com)
  • In 2015, we hired many new employees to meet the needs of our customers, and reinvested in our Accounting, Delivery and Operations groups to improve efficiency and on-time performance. (gentechscientific.com)