OrganismsChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesTechnology, Industry, AgricultureHealth Care
Solid Phase MicroextractionLiquid Phase MicroextractionVolatile Organic CompoundsPhyllachoralesGas Chromatography-Mass SpectrometryChromatography, GasVolatilizationPhase TransitionChemistry Techniques, AnalyticalRheiformesDimethylpolysiloxanesChromatography, High Pressure LiquidWater Pollutants, ChemicalChemical FractionationWaterApatitesPesticide ResiduesCocaMolecular ImprintingChromatography, LiquidDimethoate
SPMEHigh performance liIonic liquidsDirect immersion solid-phase microextrHeadspaceDeterminationDLLMESorbentVortex-assistedStationaryPreconcentrationDeep eutectic solventsHydride generationUltrasonic-assistedDerivatizationSolventSolid phase micro-extractionOrganicProcedureDetectionAnalytesMethodPolycyclicPolymerMass spectrometricFruitsParabensWaterSamplesAnalysisMoleculesAnalyticalDevelopmentsSeparationsMethodsTechniques
SPME7
  • A method for determining the fraction of free-base nicotine (α fb ) in electronic cigarette liquids ("e-liquids") based on headspace solid-phase microextraction (h-SPME) is described. (nih.gov)
  • Among the well-established solid-phase microextraction techniques such as SPME, 2 in-tube extractions 3 and stir bar sorptive extraction (SBSE), 4 membrane-assisted extractions are included increasingly in drug analysis within pharmaceutical, 5,6 medical and environmental studies. (chromatographyonline.com)
  • Solid Phase Microextraction (SPME) is a sampling technique that uses a thin polymer fiber with a hydrophobic coating. (cdc.gov)
  • The poly[pyrrole-C 6 MIm] + /SWNT films were prepared with reproducible thicknesses as well as thermal properties sufficient for high-temperature applications, such as solid-phase microextraction (SPME) with gas chromatographic analysis. (researcher-app.com)
  • Caffeic, chicoric, rosmarinic, and ferulic acid were determined through the high-performance liquid chromatography (HPLC) system, whereas the extraction and quantification of the volatile organic compounds (VOCs) were performed by solid-phase microextraction (SPME) and gas chromatography coupled to a mass spectrometer (GC/MS). "Aroma 2" showed the highest fresh yield and photosynthetic rate together with the lowest nitrate content. (frontiersin.org)
  • Therefore, the solid phase microextraction (SPME) method, which does not require an extraction solvent, was used a pretreatment approach and its applicability as an alternative to the conventional solvent extraction method was studied. (jeaht.org)
  • 16. Pawliszyn J, Pawliszyn B, Pawliszyn M. Solid Phase Microextraction (SPME). (ac.ir)
High performance li6
  • The enriched PQ and DQ in the SUPRAS phase were simultaneously analyzed by ion-pairing reversed-phase high performance liquid chromatography. (mdpi.com)
  • Magnetic solid-phase extraction coupled to high-performance liquid chromatography (HPLC)-diode array detection method has been developed for the sensitive analysis of Anastrozole (ANA) and Letrozole (LET) in human urine samples. (cumhuriyet.edu.tr)
  • Analysis of pesticides in environmental water samples by solid-phase micro-extraction-high-performance liquid chromatography. (research.com)
  • The quinolizindine alkaloid compound, oxymatrine pesticide, was analysis in the river water samples collected from different agriculture areas in the Iraqi city of Kerbala and also in its formulation using developed reverse-phase high-performance liquid chromatography method. (koyauniversity.org)
  • Optimization of dispersive liquid liquid microextraction of pyrethroid insecticides from aqueous samples for determination by reversed-phase high performance liquid chromatography. (koyauniversity.org)
  • Determination of oxymatrine and its active metabolite matrine in human plasma after administration of oxymatrine oral solution by high-performance liquid chromatography coupled with mass spectrometry. (koyauniversity.org)
Ionic liquids5
  • Hydrophilic media covered in this review comprise surfactants, polar organic solvents, deep eutectic solvents, ionic liquids, water-miscible polymers, and switchable solvents. (ua.pt)
  • Different kinds of 1-alkyl-3-methylimidazolium ionic liquids with different kinds of cations and anions were studied and 1-butyl-3-methylimidazolium chloride ([C 4 mim]Cl) solution was selected as extractants. (scirp.org)
  • Ionic liquids (ILs) are low melting point salts composed entirely of ions. (scirp.org)
  • Lately, ionic liquids (ILs, by definition salts which have melting points less than 100°) emerged as promising and alternative green replacements for ordinary organic solvents [ 8 , 9 ], due to their chemical and thermal stabilities, negligible volatility, general non-flammability, and great dissolving ability for a wide variety of compounds [ 10 , 11 ]. (ijpsonline.com)
  • Pyrrole was covalently bonded to 1-methyl and 1-benzylimidazolium ionic liquids (ILs) via an N-substituted alkyl linkage to prepare electropolymerizable IL monomers with excellent thermal stability. (researcher-app.com)
Direct immersion solid-phase microextr1
  • Analysis of human saliva metabolome by direct immersion solid-phase microextraction LC and benchtop orbitrap MS . Bioanalysis 5:783-792, PMID: 23534423, doi:10.4155/bio.13.35. (nih.gov)
Headspace3
  • For gas/liquid equilibrium of the volatile free-base form, the headspace nicotine concentration is proportional to c e,fb and thus also to α fb . (nih.gov)
  • 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)
  • Aside from simple liquid injections of extracts, a wide range of injection methods are available including solid-phase microextraction, static headspace, dynamic headspace, and thermal desorption. (metabolomicscentre.ca)
Determination4
  • A liquid chromatographic (LC) method with fluorescence detection was developed for concurrent determination of 4 fluoroquinolones: ciprofloxacin (CIPRO), enrofloxacin (ENRO), sarafloxacin (SARA), and difloxacin (DIFLX) in catfish, shrimp, and salmon. (researchgate.net)
  • This study reports 2 new simple derivatization-based dispersive liquid-liquid microextraction (DLLME) methods for spectrophotometric ultratrace determination of asulam and sulfide. (tubitak.gov.tr)
  • Development of molecularly imprinted polymers (MIPs) as a solid phase extraction (SPE) sorbent for the determination of ibuprofen in water. (ac.ir)
  • Method development and validation for the determination of selected endocrine disrupting compounds by liquid chromatography mass spectrometry and isotope pattern deconvolution in water samples. (ac.ir)
DLLME4
  • Dispersive liquid-liquid microextraction (DLLME), in which a small amount of the water-insoluble extraction solvent is dispersed in the sample, is the most successful mode in terms of number of applications reported. (ua.pt)
  • LPME modes are classified (in cloud-point extraction, coacervative extraction, aqueous biphasic systems, and different DLLME modes depending on the extraction medium) according to both the nature of the water-miscible extraction phase and the driving force of the separation. (ua.pt)
  • The article describes a simple sample pretreatment procedure for the analysis of ten organophosphorus pesticides using dispersive liquid-liquid microextraction (DLLME) followed by gas chromatography-mass spectrometry (GC-MS) in three distinctively different types of matrices: fresh fruits, fresh vegetables and dried herbs. (edu.hk)
  • A magnetic ionic based dispersive liquid liquid microextraction (MIL-DLLME) procedure was optimized for the analysis and extraction of cadmium in water and food samples by flame atomic absorption spectrophotometry (FAAS). (cumhuriyet.edu.tr)
Sorbent2
  • A new three-component magnetic eutectogel composed of a crosslinked copolymeric deep eutectic solvent (DES) and polyvinylpyrrolidone-coated Fe3O4 nano-powder impregnated in calcium alginate gel was synthesized and applied as a sorbent material in a green alternative micro solid-phase extraction of melamine in milk and dairy products. (bvsalud.org)
  • Nanoparticles like (dendrimer, carbon-based nanoparticles, magnetic and mesoporous nanoparticles, …) and their application as a new sorbent combined with different methods such as solid microextraction and liquid microextraction techniques are discussed in this article. (ac.ir)
Vortex-assisted1
  • A. Papadopoulou, I. P Román, A. Canals, K. Tyrovola, E. Psillakis , 'Fast screening of perfluorooctane sulfonate in water using vortex-assisted liquid-liquid microextraction coupled to liquid chromatography-mass spectrometry " ,Anal. (tuc.gr)
Stationary1
  • The planning and development of new chiral stationary phases (CSPs) for liquid chromatography (LC) are considered as continuous and evolutionary issues since the introduction of the first CSP in 1938. (mdpi.com)
Preconcentration2
  • In this paper, a new extraction method based on countercurrent liquid-liquid microextraction (CLLME) has been developed for the extraction and preconcentration of inorganic arsenic (iAs) in plasma and urine samples prior to their analysis by electrothermal atomic absorption spectrometry (ETAAS). (ac.ir)
  • The focus is on the use of solid phase extraction for matrix removal and analyte preconcentration. (rsc.org)
Deep eutectic solvents1
  • As a new class of ILs or ILs analogue, deep eutectic solvents (DES) have similar physical properties and phase behavior [ 15 ] to traditional ILs [ 16 , 17 ]. (ijpsonline.com)
Hydride generation1
  • Other on-line treatment strategies covered are cold vapour and hydride generation, and liquid phase microextraction. (rsc.org)
Ultrasonic-assisted2
  • Ionic liquid based ultrasonic-assisted extraction (ILUAE) was successfully applied to extract Oleanolic acid (OA) from grape seeds. (scirp.org)
  • In this study, we report an ionic liquid based ultrasonic-assisted extraction (ILUAE) as an alternative method for the recovery of OA. (scirp.org)
Derivatization1
  • Sample preparation usually includes solid-phase extraction, azeotropic distillation, and derivatization with pentafluorobenzylbromide (PFBB) in order to convert the dialkyl phosphate acids to esters (Loewenherz et al. (cdc.gov)
Solvent5
  • In this study, we used anion supramolecular solvent (SUPRAS) prepared from a mixture of an anionic surfactant, sodium dodecyl sulfate (SDS), and a cationic surfactant, tetrabutylammonium bromide (TBABr), as the extraction solvent in liquid phase microextraction (LPME) of paraquat (PQ) and diquat (DQ). (mdpi.com)
  • Membrane-assisted extraction processes become apparent as an attractive alternative to time- and solvent-consuming liquid-liquid extraction processes. (chromatographyonline.com)
  • Current procedures in environmental drug analysis use solid-phase extraction (SPE) of high sample volumes (1 L and more), solvent amounts between 5 and 12 mL for elution, and further portions for subsequent clean-up are required mostly when wastewater has to be analysed. (chromatographyonline.com)
  • An ionic liquid (IL) as a design green solvent is regarded as an attractive alternative or replacement to conventional volatile organic solvent. (scirp.org)
  • The phase diagrams of deep eutectic solvent+salt (Na3C6H5O7/Na2CO3/NaH2PO4/K2HPO4)+H2O aqueous biphasic systems were determined at 298 K and the aqueous biphasic systems were applied to extract the tryptophan for the first time. (ijpsonline.com)
Solid phase micro-extraction2
  • This review will focus specifically on the state-of-the-art sample pre-treatment methods published in the last ten years including liquid and solid phase micro-extraction, and chip-based manifolds that can be coupled to ICP-MS hyphenated techniques. (rsc.org)
  • Solid-phase micro-extraction of drugs from biological matrices. (ac.ir)
Organic2
  • Different physicochemical mechanisms of phase separation are discussed for each LPME method, including the coacervation phenomena and other driving forces, such as pH, temperature, salting-out effect, metathesis reaction and organic solvents. (ua.pt)
  • In current liquid-liquid separation systems, waterimmiscible volatile organic solvents are widely used with their good extraction performance. (ijpsonline.com)
Procedure4
  • Can membrane-assisted extraction be a possible alternative to solid-phase extraction - the current standard procedure for the trace analysis of bioactive compounds? (chromatographyonline.com)
  • The procedure consists of extraction from fish tissue with acidified ethanol, isolation and retention on a cation exchange solid-phase extraction column, elution with basic methanol, and LC analysis with fluorescence detection. (researchgate.net)
  • 7. ANALYTICAL METHODS extraction (SPE) with a C18 cartridge or liquid-liquid microextraction (LLME) procedure prior to quantification. (cdc.gov)
  • The subsequent step consist of cross-linking using a high internal phase emulsion procedure by further side-chain amidation with diethylenetriamine as crosslinker. (bvsalud.org)
Detection2
  • LC is performed by isocratic elution with acetonitrile-2% acetic acid (16 + 84) mobile phase, and a PLRP-S polymer column with fluorescence detection, excitation 278 nm and emission 450 nm. (researchgate.net)
  • Improvement of the separation and detection limits for gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-tandem mass spectrometry (LC-MS-MS) by using interactive gases as carrier gas (GC) or as nebulizer gas in electrospray ionization with MS. (longdom.org)
Analytes1
  • 19. Successive liquid-phase microextraction of acidic and basic analytes. (nih.gov)
Method1
  • Modified ecological-friendly method, dispersive liquid-liquid microextraction, was used for the extraction of oxymatrine from water samples. (koyauniversity.org)
Polycyclic1
  • 17. Naccarato A, Gionfriddo E, Elliani R, Pawliszyn J, Sindona G, Tagarelli A. Investigating the robustness and extraction performance of a matrix-compatible solid-phase microextraction coating in human urine and its application to assess 2-6-ring polycyclic aromatic hydrocarbons using GC-MS/MS. J Sep Sci. (ac.ir)
Polymer1
  • ABSs are composed of two aqueous-rich phases formed by polymer/polymer, polymer/salt, or salt/salt combinations. (ijpsonline.com)
Mass spectrometric1
  • 6. Vas G, Vekey K. Solid‐phase microextraction: a powerful sample preparation tool prior to mass spectrometric analysis. (ac.ir)
Fruits1
  • 13. Abdulra'uf LB, Sirhan AY, Huat Tan G. Recent developments and applications of liquid phase microextraction in fruits and vegetables analysis. (ac.ir)
Parabens1
  • Application of three phase hollow fiber liquid-phase microextraction for the extraction of four parabens in water samples. (tuc.gr)
Water2
  • Classified as a haloether, it is a colorless liquid that is heavier than water. (nih.gov)
  • In the enrichment methods, the formed derivatives were preconcentrated into microdroplets of the in situ formed water insoluble ionic liquid (IL), 1-hexyl-3-methylimidazolium hexafluorophosphate. (tubitak.gov.tr)
Samples1
Analysis3
  • The high potential for automation makes membrane-assisted microextraction interesting for high-throughput analysis. (chromatographyonline.com)
  • The following analytical techniques are also noteworthy: gas chromatographic analysis, liquid chromatographic analysis, and highly efficient liquid chromatographic analysis of different types of conventional detectors (Electron Capture, Flame-Ionisation, Diode and Fluorescence Detector) and mass spectrometry with different types of analysis (quadrupole, triple quadrupole, ion-trap, and time of flight). (epal.pt)
  • Solid-phase microextraction: a promising technique for sample preparation in environmental analysis. (ac.ir)
Molecules1
  • The basis of separation in ABSs is a direct result of the equilibration and selective distribution of target (bio) molecules between the two distinct aqueous phases. (ijpsonline.com)
Analytical1
  • Particularly, analytical methodologies involving microextraction approaches used for the enrichment of CECs are discussed. (tuc.gr)
Developments1
  • In recent times, membrane-assisted microextraction techniques are among the most promising developments in sample enrichment and separation. (chromatographyonline.com)
Separations1
  • Miniaturized sample preparation combined with liquid phase separations. (research.com)
Methods1
  • Miniaturized methods of liquid-liquid extraction. (nih.gov)
Techniques2
  • Both solid phase- and liquid phase-based microextraction techniques are highlighted devoting special attention to recently reported approaches. (tuc.gr)
  • Special emphasis is placed on newly developed materials used for extraction purposes in microextraction techniques. (tuc.gr)