Identification pyrolysis gas chromatography mass spectrometry. Medical search. Frequent questions

Journal of Analytical and Applied Pyrolysis. (ku.dk)
Journal of Analytical and Applied Pyrolysis 62(1):143-155. (forestbiofacts.com)

We investigated the suitability of isotope-dilution liquid chromatography coupled with tandem mass spectrometry for identifying vitamin E acetate (VEA) in bronchoalveolar lavage (BAL) fluid. (cdc.gov)

Micro-Fourier transform infrared spectroscopy (Micro-FTIR) combined with pyrolysis gas chromatography and mass spectrometry with thermal assisted hydrolysis and methylation (THM-Py-GC/MS) were together utilized to characterize and identify the main pigments and organic binding media. (springeropen.com)

A range of clean-up techniques can be performed to prepare samples prior to GC analysis such as sonication, Soxhlet/Soxtec™, liquid-liquid extraction, microwave and accelerated solvent extraction (ASE), column chromatography, and solid phase extraction (SPE). (ncl.ac.uk)
Around the mid-1980s, column chromatography began to give way to capillary column GC, in which the liquid phase is coated onto the inner walls of a thin capillary tube (about the diameter of a thin spaghetti noodle) that can be anywhere from 15 to 100 meters long, also wound into a coil. (justchromatography.com)
Capillary column chromatography represented a significant advance in the field and greatly improved the ability of columns to separate the multiple components found in complex drug and arson samples. (justchromatography.com)

For the solid components, the analysis is carried our throughout grassing or desorption, solvent extraction or pyrolysis. (neovecchiostile.com)

It proposes an analytical measurement approach that enables accurate qualitative and quantitative analysis of microplastics, and demonstrates some of the advantages of pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) for the analysis of environmental samples as compared to the other leading analytical methods. (frontier-lab.com)
If pyrolysis gas chromatography mass spectrometry (pyr-GCMS) has been used for years to give clues about this composition, the highly disparate results obtained can be attributed to the analytical conditions used and/or to differences in the nature of the analogues studied. (activeboard.com)

This study focused on the effect of temperature and residence time on the primary thermal decomposition reactions during a fast pyrolysis of softwood alkali lignin. (diva-portal.org)
In summary, our findings suggest that the primary decomposition reactions that occur under the fast pyrolysis conditions can be controlled by varying the process temperature and residence time, and deliver mechanistic insight into the product distribution from structurally complex lignin material. (diva-portal.org)
Treatment of cellulose yarns by a polysiloxane followed by a fast pyrolysis step gave carbon fibres exhibiting strong enhancement of their mechanical resistance. (oskar-bordeaux.fr)

Far from being used as much as vibrational spectroscopy methods for the study of microplastics, Py-GC/MS nevertheless has advantages which will be presented in this chapter, through the presentation of the contributions of this technique in terms of identification and quantification of microplastics. (hal.science)
The use of Py-GC/MS/FID (Micropyrolyser-Gas Chromatography/Mass Spectrometry/Flame Ionization Detector) allowed for rapid heating of the sample and detailed identification and quantification of the pyrolysis products at a temperature range of 400-600 °C, with residence times from 0.5-5 s. (diva-portal.org)
High-Performance - Anion Exchange Chromatography (HPAEC ) - Separation of plant derived oligosaccharides based on their mass to charge ratio allow identification and quantification of lower oligomers (up to DP8-10) based on availability appropriate reference standards. (uga.edu)

Fourier Transform Infrared spectroscopy (FT-IR) and Pyrolysis Gas Chromatography / Mass Spectrometry (Py-GC/MS) analysis indicated that the varnish resin was dammar. (northumbria.ac.uk)
Enzymatic digestion - Depolymerization or cleavage of plant polysaccharides helps to generate oligosaccharides suitable for structural characterization by mass-spectrometry (MALDI-TOF MS or ESI-MS) and 1D and 2D NMR-spectroscopy. (uga.edu)

We use gas chromatography (GC) to resolve complex mixtures of gases, and volatile and semi-volatile compounds, coupled with mass spectrometry (GC-MS) and other detectors such as flame ionisation (FID) and electron capture (ECD). (ncl.ac.uk)
Gas Chromatography Mass Spectrometry analyses works on fluids, solid and gaseous samples but are primarily limited to semi volatile and volatile chemicals. (neovecchiostile.com)

The identified primary pyrolysis products were mainly volatile guaiacyl-type compounds. (diva-portal.org)
In this thesis, pyrolysis was carried out in amicro-pyrolyser connected to a gas chromatograph with a mass spectrometer/flame ionisationdetector to separate and identify the formed volatile compounds. (diva-portal.org)

HNO3 5%) and an alkaline treatment (10% KOH) dissolving the previous filter, followed by enzymatic digestion (Viscozyme®L) proved to be efficient for the extraction and identification of spiked polyamide (15-20 μm) and polyethylene (40-48 μm) from feed and feces samples from rats, showing high recovery rates. (unit.no)
reported a comparison of properties of pyrolysis oils derived from HDPE (high-density polyethylene), LDPE (low-density polyethylene), and PP (polypropylene) that have the potential as a diesel engine fuel [ 10 ]. (sdewes.org)

The purpose of the gas chromatograph is to separate mixtures into individual components that can be detected and measured one at a time. (justchromatography.com)
Molecular weight determination - Size Exclusion Chromatography (SEC). SEC analysis provides information on molecular weight distribution of complex polysaccharide or oligosaccharide mixtures. (uga.edu)

Gas chromatography (GC) is an instrumental technique used forensically in drug analysis, arson, toxicology, and the analyses of other organic compounds. (justchromatography.com)
Gas Chromatography Mass Spectrometry analyses are performed on liquids, gases or solids. (spectrophotometers.com)

Pyrolysis is the thermal decomposition of materials in an inert atmosphere or a vacuum. (wikipedia.org)
Pyrolysis has been recognized as the most effective way to convert waste for producing alternative fuels through thermal degradation at elevated temperatures. (sdewes.org)

A collection of more than 70 synthetic organic pigments were analysed using pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS). We report on the analysis of diketo-pyrrolo-pyrrole, isoindolinone and perylene pigments which are classes not previously reported as being analysed by this technique. (northumbria.ac.uk)
Pyrolysis-gas chromatography-mass spectrometry is a method of chemical analysis in which the sample is heated to decomposition to produce smaller molecules that are separated by gas chromatography and detected using mass spectrometry. (wikipedia.org)
The main advantage is that no dedicated instrument has to be purchased and pyrolysis can be performed as part of routine GC analysis. (wikipedia.org)
Gas chromatography/mass spectrometry (GC/MS) is a well-known instrumental technique used for the analysis of fire debris for accelerant detection. (astm.org)
In order to minimize the destruction to the masterpiece when sampling, we only took rough fiber paper from the lowest layer of paper for the fiber identification and pigment analysis. (springeropen.com)
We have over 30 years of experience in geological, soil and sediment, and gas sample analysis. (ncl.ac.uk)
The environmental mass spectrometry laboratory has over 30 years of experience in the analysis of soil and sediments, and gas samples. (ncl.ac.uk)
The environmental mass spectrometry laboratory can perform both routine and bespoke GC and GC-MS analysis with integrated liquid and pyrolysis autosamplers, and gas sampling valves. (ncl.ac.uk)
Gas Chromatography-Mass Spectrometry analysis showed the change in hydrocarbon chain and chemical molecular structures, thus influencing its physical properties. (sdewes.org)
Gas Chromatography Mass Spectrometry GC-MS unite two powerful techniques to be able to offer the identification of substances that have low detection limits and possible necessary for quantitative analysis. (neovecchiostile.com)
Gas Chromatography Mass Spectrometry analysis is done on gases, fluids and solids. (neovecchiostile.com)
Pyrolysis is yet another sampling technique employed for the analysis of substances which are impossible to be injected into Gas chromatogram Mass Spectrometry. (neovecchiostile.com)
A chemical interaction between cellobiose and the resin (e.g. grafting of siloxane fragments onto the cellobiose) was established by using various physicochemical analysis techniques: nuclear magnetic resonance (NMR), photoelectron spectrometry (XPS), electronic paramagnetic resonance (EPR), Flash pyrolysis-gas chromatography-mass spectrometry (FP/GC/MS) and IR. (oskar-bordeaux.fr)

Desorption experiment is done under the stream of helium gas at controlled temperatures ranging from 40 to 300 degree Celsius. (neovecchiostile.com)

Additional advanced mass spectrometry-based methodology enabled to demonstrate simultaneous transport of organic pigments, heavy metals and titanium dioxide from skin to regional lymph nodes. (nature.com)

Open-air incineration releases greenhouse gases and toxic matter, which are other environmental problems, especially dioxins [ 7 ]. (sdewes.org)

Thanks to three distinct steps, destructuring, separation, and identification, this chapter explains how this technique allows the analyst to ascertain the polymeric composition of different plastic materials and much more. (hal.science)
A range of column types are available for gas, polar and non-polar compounds to provide optimised separation of complex matrices backed up by the knowledge and experience of the technical staff. (ncl.ac.uk)
Modern flight-capable mass spectrometers, in combination with various sample processing, separation, and ionization techniques enable sensitive detection of chemical biosignatures. (frontiersin.org)
On the other hand, comprehensive two-dimensional gas chromatography/high resolution time-of-flight mass spectrometry (GCxGC/HRTOFMS) is a well-known technique that provides high chromatographic separation by using two different polarity GC columns. (jeolusa.com)
GC exploits the fundamental properties common to all types of chromatography, separation based on selective partitioning of compounds between different phases of materials. (justchromatography.com)
The mobile phase gas (called the carrier gas) also enters the injector port, picking up the volatilized sample and introducing it into the column where the separation process occurs. (justchromatography.com)

Under Gas Chromatography, a sample is carried and volatilized and carried from the inter gases via a coated glass Capillary Column. (neovecchiostile.com)
In Gas Chromatography (GC), a sample is volatilized and carried by an inert gas through a coated glass capillary column. (spectrophotometers.com)

Pyrolysis GC is used in forensic laboratories to analyze evidence found in crime scenes such as paints, adhesives, plastics, synthetic fibres and soil extracts. (wikipedia.org)
In forensic applications, the most commonly used are mass spectrometry (often abbreviated as MSD for mass selective detector), flame ionization (FID), and nitrogen-phosphorus (NPD). (justchromatography.com)

E.C. Stout, C. W. Beck, K. B. Anderson, Identification of rumanite (Romanian amber) as thermally altered succinite (Baltic amber), Phys. (irug.org)

It is used for (micro)biological and environmental small polar molecule detection and identification . (ncl.ac.uk)
Here, we delve into the search for extraterrestrial chemical and morphological biosignatures and examine several possible approaches to agnostic life detection using mass spectrometry. (frontiersin.org)
Oligosaccharide fingerprinting employing high performance anion exchange liquid chromatography with pulsed amperometric detection (HPAE-PAD). (chipsbooks.com)
Oligosaccharide fingerprinting employing capillary gas chromatography with flame ionization detection. (chipsbooks.com)

Besides the usage of dedicated pyrolyzers, pyrolysis GC of solid and liquid samples can be performed directly inside programmable temperature vaporizer (PTV) injectors that provide quick heating (up to 60 °C/s) and high maximum temperatures of 600-650 °C. This is sufficient for many pyrolysis applications. (wikipedia.org)
Ultra-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry (UPLC-Q-TOF-MS) revealed the source of coloring matter. (springeropen.com)
Our laboratories include special rooms for gas and liquid chromatography, both connected to mass spectrometry (GC-MS and LC-MS). There are modern laboratories for the extraction and clean-up of environmental samples. (vu.nl)

Derivatization in mass spectrometry --7. (wikipedia.org)

Pyrolysis gas chromatography is useful for the identification of involatile compounds. (wikipedia.org)
The MSD is the most common of the three, principally because it can provide definitive identification of compounds (in almost all cases) along with quantitative information. (justchromatography.com)
In the usual Mass spectrometry step of GC-MS, compounds leaving the GC column are fragmented by electron impact. (spectrophotometers.com)
Intermediate NH2 radicals, forming during the pyrolysis of ammonia during tobacco combustion, may react with aromatic CH groups (from compounds already present in the tobacco leaves) to form the AAs (Patrianakos, C., et. (cdc.gov)

Mass Spectrometry of Synthetic Polymers. (wikipedia.org)
Pyrolysis coupled to gas chromatography and mass spectrometry (Py-GC/MS) has been used for years to characterize polymers. (hal.science)

Firstly, the influence of temperature and residence time on the primary product yield andmechanistic pathways was investigated for the pyrolysis of cellulose, xylan and lignin attemperatures ranging between 400 - 600°C and residence times between 0.5 - 5 s. (diva-portal.org)

The laboratory also has LC-MS systems and a thermogravimetric analyser interfaced to a mass spectrometer (TGA-MS). (ncl.ac.uk)
The Netzsch Jupiter STA 449C is a thermogravimetric analyser interfaced to an Aeolos QMS 403 quadrupole mass spectrometer. (ncl.ac.uk)
A variety of mass spectrometer types, including magnetic sector, quadrupole, time-of-flight, and ion trap, have and will continue to deepen our understanding of the formation and evolution of exploration targets like the surfaces and atmospheres of planets and their moons. (frontiersin.org)

This is called coelution, which can often be overcome using detectors such as mass spectrometers (MS). (justchromatography.com)
A number of different detectors are available for use in gas chromatography. (justchromatography.com)

Additionally, when this technique is used with high resolution mass measurements, it can be a powerful tool for estimating elemental compositions of analytes found within a complex mixture. (jeolusa.com)

The samples were systematically pyrolyzed from 200 to 600 C. The extracted gases were then analysed by GCMS for their molecular identification. (activeboard.com)
Purification and isolation- we can purify plant polysaccharides from other plant components based on their charge or molecular weight by using size-exclusion chromatography (SEC) and alcohol precipitation. (uga.edu)

Our latest application about the identification of microplastics in environmental monitoring which is in collaboration with U.S. Environmental Protection Agency (USEPA) has been published by LCGC magazine. (frontier-lab.com)

Physically, the pyrolysis resulted in an oil yield similar to commercial fuel oils, having a light-yellow colour in all various pyrolysis temperatures. (sdewes.org)
These smaller molecules are subsequently introduced at the Gas Chromatogram and examined from the GC-MS. By this process, probe temperatures of around 1400ºC may be used. (neovecchiostile.com)
Another method of sample introduction for GC is called pyrolysis, in which a solid sample such as a fiber or paint chip is heated in a special sample holder to extreme temperatures, causing the sample to decompose into gaseous components that can then be introduced into the GC. (justchromatography.com)

This paper describes a method of analyzing arson accelerants using gas chromatography coupled with ion trap mass spectrometry/mass spectrometry (GC/MS/MS). Petrol was investigated as an accelerant. (astm.org)

As shown in the figure, the sample is introduced into the GC column by way of a heated injector, which volatilizes all three components and introduces them into the gas flowing over the stationary phase. (justchromatography.com)

Conventional processing methods of CFA are known to pose significant environmental challenges, including the leaching of hazardous materials, emission of toxic gases, and the high energy consumption needed to extract the value-added components. (researchgate.net)
Flame emission and atomic absorption spectrometry (FES and AAS). (chipsbooks.com)
Atomic emission spectrometry (AES). (chipsbooks.com)

Quantitation of Atmospheric Suspended Polystyrene Nanoplastics by Active Sampling Prior to Pyrolysis-Gas Chromatography-Mass Spectrometry. (bvsalud.org)

The pyrolysis temperature varied at 200 °C, 250 °C, 300 °C, 350 °C, and 400 °C for two hours with a heating rate of 10 °C/min. (sdewes.org)

The heated gas flowed over the beads, allowing contact between sample molecules in the gaseous mobile phase and the stationary phase. (justchromatography.com)

Here, one phase is an inert gas helium (He), hydrogen (H 2 ), or nitrogen (N 2 ) that is referred to as the mobile phase (or carrier gas), and the other is a waxy material (called the stationary phase) that is coated on a solid support material found within the chromatographic column. (justchromatography.com)

Under usual Mass Spectrometry or MS step below the Gas Chromatography Mass Spectrometry, the chemicals leaving the GC columns are fragmented by the electron impact. (neovecchiostile.com)

In this study, we proposed a simple and robust method for determining the concentration of atmospheric PS NPs using pyrolysis - gas chromatography-mass spectrometry (Py-GC/MS). Following active sampling, the filter membrane is directly ground and introduced into the Py-GC/MS system to quantify PS NPs. (bvsalud.org)
Recently, many researchers have taken some alternative actions to reduce the need for fossil fuels by producing alternative fuels through the conversion of plastic waste using the pyrolysis method, that is, by pyrolyzing a mixture of rubber and plastic wastes [ 8 ]. (sdewes.org)

Pyrolysis GC chromatograms are typically complex because a wide range of different decomposition products is formed. (wikipedia.org)

In this research, by applying both optic microscopy and gas chromatography mass spectrometry on this matrix, a detailed qualitative investigation for reconstructing the lifestyle of a Roman imperial community of the Ager Curensis (Sabina Tiberina, Central Italy) was performed. (biomedcentral.com)
To account for the beneficial effect of the polysiloxane, an investigation of the pyrolysis mechanisms was performed on a model system based on cellobiose and a polysiloxane resin. (oskar-bordeaux.fr)

One of the advantages of chromatographic systems such as GC is the ability to provide both qualitative information (identification of individual components) and quantitative information (concentrations of individual components). (justchromatography.com)

The members of each class were found to fragment in a consistent way and the pyrolysis products are reported. (northumbria.ac.uk)
Antioxidation reaction mechanism studies of phenolic lignans, identification of antioxidation products of secoisolariciresinol from lipid oxidation. (forestbiofacts.com)

For liquids and gases, the sample is commonly directly injected the GC. (spectrophotometers.com)

To increase the volatility of polar fragments, various methylating reagents can be added to a sample before pyrolysis. (wikipedia.org)
Pyrolysis is used when the sample is not readily soluble in common GC solvents. (justchromatography.com)

Characterisation of traditionally kiln produced pine tar by gas chromatography-mass spectrometry. (forestbiofacts.com)

An important impetus for the continuing exploration of Mars, Europa, Enceladus, Titan, and Venus involves assessing the habitability of solar system bodies and, ultimately, the search for life-a monumental effort that can be advanced by mass spectrometry. (frontiersin.org)

This article presented results from materials identification prior to the restoration. (springeropen.com)
In this article, a piece of calligraphy tie luo is studied for its materials and making technique identification before its restoration. (springeropen.com)

Anatomy6

Organisms10

Chemicals and Drugs77

Analytical, Diagnostic and Therapeutic Techniques and Equipment43

Phenomena and Processes29

Disciplines and Occupations5

Anthropology, Education, Sociology and Social Phenomena2

Technology, Industry, Agriculture3

Information Science4

Health Care14

Journal of Analytical and Applied Pyrolysis2

Tandem mass spectro1

Hydrolysis and methylation1

Column chromatography3

Solvent extraction1

Analytical2

Fast pyrolysis3

Quantification3

Spectroscopy2

Semi-volatile2

Volatile2

Polyethylene2

Mixtures2

Analyses2

Thermal2

Analysis13

Desorption1

Organic pigments1

Greenhouse gases1

Separation6

Capillary Column2

Forensic2

Thermally1

Detection4

Liquid3

Derivatization1

Compounds4

Polymers2

Cellulose1

Spectrometer3

Detectors2

Measurements1

Molecular2

Microplastics1

Temperatures3

Arson1

Injector1

Emission3

Nanoplastics1

Temperature1

Gaseous1

Hydrogen1

Chemicals1

Method2

Typically1

Investigation2

Quantitative1

Products2

Commonly1

Sample2

Characterisation1

Assessing1

Article2