• Headspace was transferred to an evacuated canister and quantitatively analyzed for 20 VOCs as well as tentatively identified compounds using a preconcentrator/gas chromatography/ mass spectrometer system. (cdc.gov)
  • An additional 11 VOCs were measured in human blood using SPME in conjunction with gas chromatography and bench top quadrupole mass spectrometer (5). (cdc.gov)
  • The prevalent methods are carried out on gas chromatography-mass spectrometer, regardless of the water or fish flesh. (hindawi.com)
  • Here the injected sample which gets separated into different components in the LC column is directed into the first mass spectrometer where it is ionized. (iti.lk)
  • ICPMS is a type of mass spectrometer which is combined with inductively coupled Plasma. (iti.lk)
  • The addition of a multi-capillary gas chromatography column using the ion mobility spectrometer as detector has been proposed in the past to increase chemical resolution. (ibecbarcelona.eu)
  • The mass spectrometer operated in scan mode, monitoring a range of 35-400 m/z. (coresta.org)
  • An analytical method was developed that provided quantitative and qualitative chemical information for characterizing the volatile constituents of bulk electronic cigarette liquids (e-liquids) using a static headspace technique. (cdc.gov)
  • Static headspace screening of e-liquids allows for the identification of volatile chemical constituents which is critical for identifying and controlling emission of potentially hazardous constituents in the workplace. (cdc.gov)
  • Analyte responses were adequate for measuring background levels after extraction of these volatile organic compounds with either purge-and-trap extraction or headspace SPME. (cdc.gov)
  • Using headspace solid-phase microextraction followed by gas chromatography mass spectrometry, researchers identified 45 volatile compounds, including ketones and aldehydes. (ift.org)
  • Malle, P., Determination of volatile compounds in whiting (Merlangius merlangus) using headspace-solid-phase microextraction-gas chromatography-mass spectrometry, J. Chromatogr. (chemspider.com)
  • A polydimethylsiloxane fiber was maintained in the vial headspace for 10 min in order to adsorb the amphetaminic compounds, which were subsequently derivatized by exposing the fiber to trifluoroacetic anhydride for 20 min in the headspace of another vial maintained at 60 degrees C for 20 min. (erowid.org)
  • Gas Chromatography (GC) is an instrumental technique use to analyze organic compounds. (iti.lk)
  • The peroxide value (POV), p-anisidine value (p-AV), acid value (AV) and chromaticity values were measured, and the fatty acid composition and volatile compounds were determined using gas chromatography (GC) and headspace gas chromatography mass spectrometry (HS/GC-MS), respectively, sensory evaluation was performed and relative odor activity (ROAV) values were calculated. (spkx.net.cn)
  • GC/MS analysis allows separation of compounds based on their retention time within a chromatography column and identification of each compound by the characteristic fragments into which a given chemical is broken following ionization of the compound. (medscape.com)
  • Over the years, technologic advances in electronics and detectors have allowed GC/MS to detect ever smaller concentrations of compounds, as has the addition of other analytical techniques, such as liquid chromatography. (medscape.com)
  • To mitigating the serious threat of harmful volatile substances to the health of infants , an alternative method of odor evaluation were proposed based on Headspace solid-phase microextraction (HS-SPME) combined with Gas Chromatography-Mass Spectrometry (GC-MS) to discriminate the degree of rancidity of infant formula rice flour (IFRF). (bvsalud.org)
  • This automated analytical method uses headspace solid-phase microextraction (SPME) coupled with capillary gas chromatography and mass spectrometry (3). (cdc.gov)
  • A rapid, sensitive, and solvent-free procedure for the simultaneous determination of amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine (MDA), and 3,4-methylenedioxymethamphetamine (MDMA) in urine was developed using solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS) in the selected ion monitoring mode. (erowid.org)
  • These included a comparison of SPME with or without headspace, the required derivatization procedure, and the influence of temperature on the headspace extraction and derivatization methods. (erowid.org)
  • The regular purge and trap extraction followed by analysis with gas chromatography-mass spectrometry (GC-MS) usually involve a complicated assembly of facilities, more working space, long sample preparation time, and headspace solid-phase microextraction (SPME). (hindawi.com)
  • The aroma profiles of hops were detected by flavor-detection methods including Gas chromatogram-flame ionization detector (GC-FID), Gas chromatography-mass spectrometry (GC-MS), Headspace solid-phase microextraction/gas chromatogram-mass spectrometry (HS-SPME/GC-MS), and sensory evaluation. (unl.edu)
  • In this study, we aimed to detect aroma profiles of organically grown 'Albion' and 'Benicia' strawberry cultivars using HS/SPME/GC/MS (Headspace Solid Phase Micro Extraction Gas Chromatography Mass Spectrometry) strawberry intercropped with mulberry and cowpea. (ishs.org)
  • THMs and MTBE were quantified in human blood using capillary gas chromatography (GC) and high-resolution mass spectrometry (MS) with selected ion mass detection and isotope-dilution techniques (4). (cdc.gov)
  • Method Number 1/48) and involved headspace and gas Chromatography (GC) coupled with mass spectrometry detection (MS). A recovery factor of 0.93 was applied to all results. (fsai.ie)
  • Headspace gas chromatography with flame ionization detection (GC-FID) is often used for residual solvent testing of pharmaceuticals, though the qualitative power of this method is not particularly high. (shimadzu.com)
  • The readily reproducible methods range from gas and liquid chromatography coupled to mass spectrometry detection and other classic detectors, to capillary electrophoresis and immunochemical or radioimmunoassay methods. (nhbs.com)
  • At the baseline, spot urine samples were collected and seven urinary flavonoid metabolites were quantified using ultra-performance liquid chromatography coupled to triple quadrupole mass spectrometry (UPLC-Q-q-Q MS). Liver enzymes, inflammatory scores, and urinary flavonoid concentrations were inverse normally transformed. (unav.edu)
  • Unlike in normal liquid chromatography where the liquid passes through the column under gravity, HPLC uses high pressure to pass the sample mixture through the column packed with a solid adsorbent material. (iti.lk)
  • The proposed headspace analysis technique coupled with partition coefficients allows for a rapid and sensitive prediction of the volatile content in the liquid. (cdc.gov)
  • Ion chromatography (IC) is a form of liquid chromatography that is able to measure the concentrations (in parts per billion) of anions such as chloride, fluoride, nitrate, and sulfate, and cations such as ammonium, calcium, magnesium, and sodium. (chromatographyonline.com)
  • in contrast, an aerosol is a suspension of fine particles of liquid, solid or both in a gas. (bmj.com)
  • LCMS-MS is usually a high-performance liquid chromatograph combined with two mass spectrometers. (iti.lk)
  • The authors have focused on extraction and cleanup procedures, in order to develop and optimize more fully automated and miniaturized methods, including solid-phase extraction, solid-phase microextraction, microwave-assisted extraction, and on-line tandem liquid chromatography (LC/LC) trace enrichment, among others. (nhbs.com)
  • Water and four solutions (50% ethanol, sodium chloride, sodium hydroxide and phosphoric acid) were selected and impurities were measured by gas chromatography mass spectrometry (GC-MS) and liquid chromatography-UV spectroscopy-mass spectrometry (LC-UV-MS) after 70 days at 40°C. Compared with the control, impurities were not detected in the OXYCAPT containers. (ondrugdelivery.com)
  • Headspace-GC/MS was employed to prepare essential oil from rhizome curcuma, with TR-5 quartz capillary column, extraction temperature 90 degrees C, hold 30 min, injection volume 1.5 mL. (unboundmedicine.com)
  • Both the particulate and gas phases are mixtures of chemical substances in e-cigarette aerosols. (bmj.com)
  • Tomohiro Suzuki reviews the advantages that OXYCAPT™, Mitsubishi Gas Chemical 's multilayer material for vials, offers to biologics and gene and cell therapies, and discusses the results of recent tests into low-temperature storage and dimethyl sulfoxide resistance. (ondrugdelivery.com)
  • OXYCAPT™ is a multilayer plastic vial developed by Mitsubishi Gas Chemical (MGC) that offers a number of advantageous qualities as a primary drug container (Figure 1). (ondrugdelivery.com)
  • A headspace vial containing the urine sample, NaOH, NaCl, and amphetamine-d3 as the internal standard was heated at 100 degrees C for 20 min. (erowid.org)
  • Title : Quantitative Analysis of Menthol in Human Urine Using Solid Phase Microextraction and Stable Isotope Dilution Gas Chromatography/Mass Spectrometry Personal Author(s) : Huang, Wenlin;Blount, Benjamin C.;Watson, Clifford H.;Watson, Christina;Chambers, David M. (cdc.gov)
  • Because gas chromatography mass spectrometry (GC/MS) utilizes MS to perform qualitative analysis based on mass spectra, GC/MS can be used to estimate and identify individual peaks detected in the expected vicinity of a target solvent as well as other unknown peaks. (shimadzu.com)
  • Short chromatography times lead to high levels of co-elution, and ion mobility spectra are key to resolve them. (ibecbarcelona.eu)
  • Headspace analysis for screening of volatile organic compound profiles of electronic juice bulk material. (cdc.gov)
  • Several techniques exist to perform BSS on Ion Mobility Spectrometry, being Simple-to-use interactive self-modeling mixture analysis (SIMPLISMA) and Multivariate Curve Resolution (MCR) the most commonly used. (ibecbarcelona.eu)
  • Once the sample is injected into the instrument it enters to the separation column with the carrier gas. (iti.lk)
  • The facility boasts a wide range of equipment from multiple manufacturers covering instrumentation in gas chromatography such as comprehensive multi-dimensional gas chromatography, PTV injectors, autosamplers, thermal desorbers and pyrolysers. (anthias.co.uk)
  • The Open University provides Anthias Consulting with the Training Facility for the high-quality, affordable, instrument-independent training courses that can boost your knowledge, confidence and results in all aspects of gas chromatography and GC-MS. These courses have a strong practical focus which can be applied the instant you return to your lab and are applicable to all levels of experience. (anthias.co.uk)
  • Operating parameters included an acquisition mass range of 70-750 m/z, typical of most small molecules. (coresta.org)
  • The numbers of CFU of disaggregated biofilms, 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-5-[(phenylamino)carbonyl]-2H-tetrazolium hydroxide reduction, and light and confocal microscopy were used to measure the fungal mass, the metabolic activity, and the appearance of C. neoformans biofilms, respectively. (who.int)
  • If the screening test is positive, then that positive result must be confirmed, typically with gas chromatography/mass spectrometry (GC/MS). (medscape.com)