Conditions spectroscopy gas chromatography mass spectrometry. Medical search. Frequent questions

Operando spectroscopy is a class of methodology, rather than a specific spectroscopic technique such as FTIR or NMR. (wikipedia.org)
Scanning electron microscopy (SEM), mercury porosimetry, Fourier transform infrared spectroscopy (FTIR) and X‐ray photoelectron spectroscopy (XPS) were the techniques used, in addition to classical chemical analysis and solid phase micro extraction (SPME) prior to gas chromatography with mass spectrometry (GC‐MS) for PCP quantification. (deepdyve.com)
Gas phase products are identified and/or quantified by gas chromatography (GC), mass spectrometry (MS), or Fourier transform infrared spectroscopy (FTIR), liquid phase products by nuclear magnetic resonance (NMR) and liquid chromatography (LC). (empa.ch)
We use a variety of organic and inorganic geochemical techniques to study the physical and chemical composition of a fossil, including Pyrolysis Gas Chromatography Mass Spectrometry (Py-GCMS), Fourier Transform Infra-red Spectroscopy (FTIR), Environmental Scanning Electron Microscopy (ESEM) and Synchrotron Rapid Scanning X-Ray Fluorescence (SRS-XRF). (organicgeochemistry.co.uk)
In vitro established plants were subjected to FTIR (Fourier transform infrared spectroscopy) and GC-MS (Gas chromatography-mass spectrometry) analysis and were showing array of compounds. (traditionalmedicines.org)
The BB burnt in the CDM produces lower NMHCs and VOCs than in the other two modes and the SC burnt in the three modes yields the lowest NMHCs and VOCs among the four coal fuels, as further clarified by online FTIR (Fourier-Transform Infrared spectroscopy) measurements. (ipe.ac.cn)
FTIR spectroscopy offers a vast array of analytical opportunities in academic, analytical, QA/QC and forensic labs. (thermofisher.com)
This webinar takes you through the basics of FTIR spectroscopy as well as providing insight into how to use the accessories and analyze the resulting spectra. (thermofisher.com)
Learn how to teach the technique of FTIR in a laboratory setting as well as how to use the Educational Kit to analyze liquids and gases. (thermofisher.com)
This webinar demonstrates how to incorporate UV-Vis and FTIR spectroscopy into the high school curriculum. (thermofisher.com)
FTIR and Raman spectroscopy are both SWGDRUG Category A techniques that can be used by forensic scientists to quickly identify unknown materials and confidently give expert testimony in court. (thermofisher.com)
FTIR spectroscopy is a SWGDRUG Category A technique for illicit drug identification. (thermofisher.com)
Novel technologies have been recently developed that allow for 10s - 100s of compounds to be monitored simultaneously in real-time by FTIR gas analysis. (thermofisher.com)
We present data used to quantify limits of detection, limits of quantification, bias, precision, and accuracy of Fourier Transform Infrared Spectroscopy (FTIR) measurements of vapors from 2.5 M PGME solutions. (cdc.gov)

Two hair cleansing conditioners were subjected to temperatures of 60 °C and 185 °C to simulate the use of a blow dryer or flatiron hair straightener, respectively and analyzed via Gas Chromatography-Mass Spectrometry (GC-MS), High-Performance Liquid Chromatography-UV (HPLC) and Fourier-Transform Infrared Spectroscopy (FT-IR) to capture a chemical profile of the samples. (mdpi.com)
Fourier-transform infrared spectroscopy confirmed bioreduction, while EDS and XRD patterns confirmed purity and the crystalline nature of the NPs, respectively. (dovepress.com)
Compounds may also be measured directly without chromatographic separation by, for example, fourier- transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) and nuclear magnetic resonance spectroscopy (NMR). (metabolomics.net.au)
particle size analysis by laser diffraction and sieve, morphology and elemental content (qualitative) by Scanning Electron Microscope - Energy Dispersive X-ray Analysis (SEM-EDXA), elemental content by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) analysis (quantitative), hydrocarbon profile by Gas Chromatography-Mass Spectrometry (GC-MS) and TPH by Fourier-Transform Infrared Spectroscopy (FT-IR). (worktribe.com)
Laboratories that operate Fourier-Transform Infrared (FT-IR) Spectrometers use purge gas generators to purify compressed air and remove contaminants such as CO2 and water vapour. (labmate-online.com)
First, we turned to a resource that we have in-house: Fourier transform infrared spectroscopy, or FT-IR. (penn.museum)
Workplace and environmental air contaminant concentrations measured by open path fourier transform infrared spectroscopy: a statistical process control technique to detect changes from normal operating conditions. (cdc.gov)

Gas chromatography-mass spectrometry, thin-layer chromatography, atomic absorption spectrometry, etc. are employed to monitor these substances. (vetmeduni.ac.at)
The most common currently used method of analyzing for the presence of sulfur mustard and its metabolites in biological and environmental samples is gas chromatography/mass spectrometry (GC/MS). Prior to 1987, however, thin-layer chromatography (TLC) with a colorimetric detection system and gas chromatography with either flame ionization detector (FID), electron capture detector (ECD), or flame photometric detector (FPD) were the most frequently used methods. (cdc.gov)
Aqueous root extract of P. zeylanica (PZRE) was analyzed for the presence of flavonoids, sugars, and organic acids using high-performance thin-layer chromatography (HPTLC), gas chromatography-time of flight-mass spectrometry (GC-TOF-MS), and biochemical methods. (dovepress.com)
Techniques such as IR and UV spectroscopy, gas chromatography, mass spectrometry, thin-layer chromatography, and optical rotatory dispersion are used to determine the components of perfume ( 6 ). (acs.org)

Gas chromatography-mass spectrometry ( GCMS ) combines the features of gas-chromatography and mass spectrometry to identify different substances within a test sample, detecting even trace amounts of a substance. (seqens.com)

Using tandem mass spectrometry for metabolic disease screening among newborns: a report of a work group. (cdc.gov)
Increasingly, tandem mass spectrometry (MS/MS) is being used for newborn screening because this laboratory testing technology substantially increases the number of metabolic disorders that can be detected from dried blood-spot specimens. (cdc.gov)

Independent experts in analytical science providing consulting and training in Gas Chromatography, Liquid Chromatography, Mass Spectrometry, Inductively Coupled Plasma, Spectroscopy, Mass Spectrometry Imaging, Physical & Structural Properties of Molecules and all their related techniques. (cambridgenetwork.co.uk)

High-performance liquid chromatography ( HPLC ), used to separate, identify, and quantify each component in a mixture. (seqens.com)
Liquid chromatography-mass spectrometry ( LCMS ) combines the physical separation capabilities of liquid chromatography (HPLC) with the mass analysis capabilities of mass spectrometry (MS). The two combined synergistically enhances the individual capabilities of each technique. (seqens.com)
Microbial components or products are separated and identified using high-performance liquid chromatography (HPLC) or gas chromatography. (msdmanuals.com)

Depending on the fire's specific conditions, many diverse chemical compounds are produced in varying amounts. (springer.com)
The peculiar conditions of the endophytic lifestyle raise questions about the molecular background of the biosynthesis of these bioactive compounds in planta, and the actual producer, whether it is the plant itself or its residents. (bvsalud.org)
Odorous or volatile compounds released from various biological fluids are determined and identified by gas chromatography-mass spectrometry. (vetmeduni.ac.at)
The complexity of biological samples poses a major challenge for reliable compound identification in mass spectrometry (MS). The presence of interfering compounds that cause additional peaks in the spectrum can make interpretation and assignment difficult. (elsevierpure.com)
The resulting metabolite profiles reflect the actual cellular condition and provide useful indicators (biomarkers) of abnormalities/health, consequences of genetic engineering and adaptations to test compounds (e.g. drugs) or environmental factors, as well as a means of discovering new biomolecules (bioprospecting) and monitoring food quality. (metabolomics.net.au)
Offline GC-MS (Gas Chromatography-Mass Spectrometry) analyses show that the mass of benzene and toluene accounts for more than 60% of the total amount of quantifiable benzenoid compounds under the smoldering condition, and up to almost 100% under the flaming condition. (ipe.ac.cn)
Gas chromatography/mass spectroscopy analysis showed that the extract contained monoterpene hydrocarbons and phenolic compounds, the major ones being carvacrol and thymol and to a lesser extent p-cymene, 1-octacosanol, creosol, and phytol. (hindawi.com)
Gas chromatography ( GC ), used for separating and analyzing compounds that can be vaporized without decomposition, for testing a compound's purity or separating components of a compound. (seqens.com)
In order to see if we could classify the shabti box resin even further, Dr. Hall took a sample to Dr. Chris Petersen, Affiliated Associate Professor in the Winterthur/University of Delaware Program in Art Conservation ( WUDPAC ), where they analyzed it using Gas Chromatography-Mass Spectrometry (GC-MS). GC-MS is a technique that combines 2 methods of analysis, and in conservation we use it to analyze organic compounds. (penn.museum)
A new frontier for fast, risk-free and potentially inexpensive diagnosis of respiratory diseases is based on volatile organic compounds (VOCs), i.e. organic compounds that have high vapor pressure at ambient conditions. (ersjournals.com)

Moreover, high level techniques, for example, infrared spectroscopy and Raman spectroscopy aid the identification of obscure substances by examining their novel atomic fingerprints. (savelorishouse.com)

The X-ray Photoelectron Spectroscopy (XPS) result showed that Cu is in the state of CuO (Cu 2+ ), while Ti is in Ti 4+ (TiO 2 ). (ui.ac.id)

Spatially resolved spectroscopy combines spectroscopy with microscopy to determine active sites of the catalyst studied and spectator species present in the reaction. (wikipedia.org)
The silver NPs (AgNPs), gold NPs (AuNPs), and bimetallic NPs (AgAuNPs) were synthesized from root extract and characterized using ultraviolet-visible spectra, X-ray diffraction (XRD), energy-dispersive spectrometry (EDS), transmission electron microscopy (TEM), and dynamic light scattering (DLS). (dovepress.com)

Nuclear magnetic resonance spectroscopy (NMR ) exploits the magnetic properties of certain atomic nuclei and is used for determining the physical and chemical properties of atoms or the molecules in which they are contained. (seqens.com)

Introduction to Evolved Gas Analysis. (hanserpublications.com)
Evolved gas analysis (EGA) describes analysis of gases or volatile components evolved from a sample undergoing thermal analysis. (hanserpublications.com)
It is often used in direct combination with chemical analysis techniques such as gas chromatography, IR spectroscopy, or mass spectrometry, and / or with thermogravimetric analysis (TGA), i.e. measuring the change in weight of the sample under controlled conditions. (hanserpublications.com)
The total contents of proteins, lipids, ashes, fibers, etc. in foods and fecal samples are analyzed by using Weender analysis or near-infrared spectroscopy. (vetmeduni.ac.at)
The instrument enables mass spectrum measurement for qualitative analysis or identification of unknowns and Selected Ion Monitoring (SIM) and MRM Measurement for quantitation of trace elements. (utm.my)
On the basis of this concept, we present the ratio analysis of mass spectrometry (RAMSY) method, which facilitates improved compound identification in complex MS spectra. (elsevierpure.com)
Traditionally for these methods, samples have been collected in specially prepared "Summa type" canisters and transported to a laboratory for analysis by gas chromatography mass spectrometry (GC-MS). GC-MS allows for speciation and quantification of many HAPs and non-HAPs within the sample at ppm to ppb levels, but in many cases, the customer must wait weeks for a result. (thermofisher.com)

The technique combines modifications of the Matsumoto and Kuhara method of urinalysis with gas chromatography and mass spectrometry in the selected-ion monitoring mode. (medscape.com)

in situ and operando measurements possible (High Cube Eco pumping stage including Pfeiffer Prism mass spectrometer). (uibk.ac.at)
The experiments involved in this study included determining TD-GC-MS parameters suitable for efficient analyte separation and quantitation on the HAPSITE ER, determinations of analyte mass loadings that cause mass spectrometer detector saturations, generation of calibration curves, estimations of the limits of detection (LODs) and quantification (LOQs), as well as desorption efficiency and relative response factor repeatability. (cdc.gov)

Our current research focuses on gas diffusion electrodes for the the electrochemical reduction of CO 2 . (empa.ch)

Fixed Bed Flow Reactor setup with mass spectrometry detection (Prisma), pre-oxidation, pre-reduction and catalytic treatments (e.g. (uibk.ac.at)
The most commonly used platforms for the detection and measurement of metabolites involves the use of gas chromatography (GC), liquid chromatography (LC), or capillary electrophoresis (CE) coupled with mass spectrometry (MS). (metabolomics.net.au)
Used in combination with liquid or gas chromatography, mass spectrometry is the most frequently used chemical test since it permits the detection of low concentrations of analytes in highlycomplex food matrices. (apfoodonline.com)
Mass spectroscopy is one of a number of innovative technologies that are being or have been developed for detection and identification of biological warfare and bioterrorism agents. (msdmanuals.com)

RAMSY works on the principle that, under a given set of experimental conditions, the abundance/intensity ratios between the mass fragments from the same metabolite are relatively constant. (elsevierpure.com)

Polycyclic aromatic hydrocarbons (PAHs) profile by gas-chromatography-mass spectrometry were recently used for the identification of sources of contamination in environmental forensic investigations. (asianpubs.org)
In present study, an effort is given to utilize gas chromatography-mass spectroscopy to obtain PAHs profile that could help forensic scientist in selection of evidence at the scene of fire. (asianpubs.org)
Debris obtained sonicated at room temperature and concentration of 18 PAHs were determined with gas chromatography-mass spectrometry. (asianpubs.org)

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)

Large-scale chromatography purification equipment. (seqens.com)
This technology has several applications, including chemical scaleup, chromatography and purification, materials science, and the optimization of personal care and consumer products. (acs.org)

In the context of organometallic catalysis, an in situ reaction involves the real-time measurement of a catalytic process using techniques such as mass spectrometry, NMR, infrared spectroscopy, and gas chromatography to help gain insight into functionality of the catalyst. (wikipedia.org)
Therefore, the operando reaction method must involve in situ spectroscopic measurement techniques, but under true catalytic kinetic conditions. (wikipedia.org)
The name change from in situ to operando for the research field of spectroscopy of catalysts under working conditions was proposed at the Lunteren congress. (wikipedia.org)
Operando spectroscopy is a logical technological progression in in situ studies. (wikipedia.org)

Zero air generators are used to purify ambient air and remove hydrocarbons such as ethane, propane and natural gas. (labmate-online.com)

RAMSY was applied to both gas chromatography/MS and liquid chromatography tandem MS (LC-MS/MS) data to demonstrate its utility. (elsevierpure.com)
These include traditional, so-called 'wet chemical' techniques, and advanced approaches such as infrared spectroscopy, gas and liquid chromatography and mass spectrometry. (apfoodonline.com)

The Hydrocarbon Processing Industry (HPI) market, encompassing petroleum refining, gas processing, petrochemical and chemical, is a foundational field for all industry. (shimadzu.eu)

General method for determining ethylene oxide and related N7-guanine DNA adducts by gas chromatography-electron capture mass spectrometry. (cdc.gov)

This work presents selected results from in-progress research at the Museu Picasso Barcelona that examines the relationship between the condition of works on canvas by Picasso and the composition and physical-mechanical properties of the painting support materials. (unive.it)

Operando (Latin for working) spectroscopy refers to continuous spectra collection of a working catalyst, allowing for simultaneous evaluation of both structure and activity/selectivity of the catalyst. (wikipedia.org)

Operando spectroscopy is an analytical methodology wherein the spectroscopic characterization of materials undergoing reaction is coupled simultaneously with measurement of catalytic activity and selectivity. (wikipedia.org)
The purpose of operando spectroscopy is to measure the catalytic changes that occur within the reactor during operation using time-resolved (and sometimes spatially-resolved) spectroscopy. (wikipedia.org)

By precisely recognizing and examining substances, forensic identifiers assume a critical part in interfacing evidence to possible suspects and understanding the conditions encompassing a wrongdoing. (savelorishouse.com)

Mass spectrometry can detect various proteins of different masses in a specimen. (msdmanuals.com)

The purpose of this work was to develop a reliable analytical method for rapid and on-site assessments of occupational VOC exposures using field-capable thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS) instrumentation (i.e. the HAPSITE ER). (cdc.gov)

We illustrate screening of hazards posed by new products and environmental that where equal mass concentrations (mg/ml) imply equal doses for chemicals (Bakand et al. (cdc.gov)

A personal vapor/particle sampler for measuring gas and particle phase distribution of volatile organic chemicals in the workplace. (cdc.gov)

The analytical principle of measuring the structure, property and function of a material, a component disassembled or as part of a device simultaneously under operation conditions is not restricted to catalysis and catalysts. (wikipedia.org)

The role of free radicals has been implicated in several pathological conditions, including cancer, cardiovascular diseases, neurodegenerative disorders, and drug toxicity [ 13 - 15 ]. (hindawi.com)
The rationale rests on the fact that VOCs show distinct and immediate changes when pathological conditions arise, altering the body's biochemistry by one or a combination of the following processes: oxidative stress, cytochrome p450, liver enzymes, carbohydrate metabolism and lipid metabolism [ 2 , 10 ]. (ersjournals.com)

Fast, reliable and cost efficient, they allow scientists to produce pure, laboratory-quality gas at the touch of a button. (labmate-online.com)
Below, we take a closer look at the main types of laboratory gas generators, as well as some different applications and benefits . (labmate-online.com)
This overview of the main types of gas generators just scratches the surface of applications for these laboratory instruments. (labmate-online.com)

It was coined by Miguel A. Bañares, who sought to name the methodology in a way that captured the idea of observing a functional material - in this case a catalyst - under actual working, i.e. device operation, conditions. (wikipedia.org)
Time-resolved spectroscopy theoretically monitor the formation and disappearance of intermediate species at the active site of the catalyst as bond are made and broken in real time. (wikipedia.org)
Operando spectroscopy requires measurement of the catalyst under (ideally) real working conditions, involving comparable temperature and pressure environments to those of industrially catalyzed reactions, but with a spectroscopic device inserted into the reaction vessel. (wikipedia.org)
The objectives of this study are to reduce the free fatty acid (FFA) content by using catalyst CuO/TiO 2 , characterization of the catalyst and the operation condition of reaction. (ui.ac.id)
The optimum reduction of the FFA was under condition of 4% loading CuO/TiO 2 , 4 hours reaction time, 30:1 (mole/mole) methanol to oil ratio, 5% (w/w) catalyst amount. (ui.ac.id)

In this study, silver nanoparticles were synthesized using leaf extract of Leonotis nepetifolia (L). Gas chromatography-mass spectrometry data showed a total of 13 phytochemical constituents identified from ethanolic leaf extract of Leonotis nepetifolia (L). The effect of physicochemical factors such as the reaction time, temperature, concentration of Silver nitrate, concentration of leaf extract and pH in the synthesis of silver nanoparticles. (ijpsonline.com)
Automated process research (APR) technology couples automated synthesis equipment and statistical design of experiments, which results in a much more rapid optimization of reaction conditions ( 9 11 ). (acs.org)

For biosynthesis, the optimal conditions were 1 mM silver nitrate, 0.1 ml of leaf extract at 80° for 90 min. (ijpsonline.com)

The filtered air is used to supply gas chromatographs, flame ionisation detectors and Total Organic Carbon (TOC) analysers with air that's pure, dry and free from contaminants. (labmate-online.com)

A number of proteins/enzymes are purified from a variety of animal tissues or organs and quantified by Western blot or ELISA and the activities are measured via kinetic assays to investigate their variation under different physiological conditions in animals. (vetmeduni.ac.at)
Fatty acids from animal tissues and foods are determined by gas chromatography and gas chromatography-mass spectrometry. (vetmeduni.ac.at)

Most often, foodborne illnesses can be traced to the presence of unhealthy levels of chemical residues from contaminated soil or water, or to the growth of bacteria, viruses and other microbiological contaminants associated with inadequate storage conditions or unsanitary food handling practices. (apfoodonline.com)

Gas chromatographs are bona fide workhorses in scientific laboratories. (labmate-online.com)
Environmental laboratories use gas chromatographs to test air quality and monitor pollution levels, while forensics labs rely on the instruments to produce toxicology reports. (labmate-online.com)
Most hydrogen generators are powered by electrolysis, a process that splits water (H2O) into hydrogen (H) and oxygen (O). The oxygen is discarded, and the hydrogen is captured and used to operate gas chromatographs. (labmate-online.com)

To study newly developed materials under realistic operating conditions, we further built a lab-scale alkaline electrolyser operating at 80 °C and 60 bar. (empa.ch)
Despite its toxicity and carcinogenicity, it is still often used to impregnate wood, which has a particularly negative impact on the condition of the soil in plants that impregnate wooden materials. (bvsalud.org)
Total of nine different materials like paper, cardboard, foam, cloth, metal, hair, soil, meat and wood were selected and these are burned with gasoline in partial burning and complete burning conditions. (asianpubs.org)

The Gas Chromatography-Mass Spectrometry (GC-MS) results showed that the addition reaction of -eleostearic acid simultaneously occured at 100% conversion. (ui.ac.id)

Complications arise, for example, for gas phase reactions which require large void volumes, which make it difficult to homogenize heat and mass within the cell. (wikipedia.org)
Rapid screening of reactions conditions by utilizing parallel equipment. (seqens.com)

The temperature range generally oscillates between 40 °C and 60 °C, a characteristic interval of the immobilized form, which usually guarantees better conditions because it is more stable than the free form. (researchgate.net)
C, a characteristic interval of the immobilized form, which usually guarantees better conditions because it is more stable than the free form. (researchgate.net)
In cellular research laboratories, nitrogen is used to control atmospheric conditions and create a stable environment with no changes in humidity, temperature and oxygen levels. (labmate-online.com)
This assessment described the work as in stable condition, and no work was deemed necessary. (theclowescollection.org)
[ 7 ] Their work suggests that this method can rapidly determine FDPase deficiency in these patients either during a metabolic crisis or during the stable clinical condition. (medscape.com)

At the same time, innovations in gas chromatography high-resolution mass spectrometry instruments, along with the development of related software tools, have shown great potential. (apfoodonline.com)
From supplying chromatography instruments with hydrogen to funnelling nitrogen into In Vitro Fertilisation (IVF) incubators, laboratories around the world rely on gas generators. (labmate-online.com)
As well as nitrogen and hydrogen gas generators , many laboratories invest in other specialised instruments. (labmate-online.com)
Specialised Total Organic Carbon (TOC) gas generators transform compressed air into carrier gas needed to operate TOC instruments. (labmate-online.com)
Gas chromatography-mass spectrometry (GC-MS) instruments, for instance, empower specialists to investigate tests and distinguish different synthetics or medications. (savelorishouse.com)

Specific pathogens have unique proteins, and the relative mass and abundance of each protein can sometimes be used to identify a microorganism. (msdmanuals.com)

The fundamental objective of this work is to examine the efficiency of the hybrid advanced treatment process for removal of residual organic pollutants in carpet washing wastewater at various reaction conditions. (ibu.edu.tr)

I look into what is preserved and why, and how the preservation changes over time and with different environmental conditions. (organicgeochemistry.co.uk)

Anatomy7

Organisms7

Chemicals and Drugs72

Analytical, Diagnostic and Therapeutic Techniques and Equipment51

Phenomena and Processes31

Disciplines and Occupations5

Anthropology, Education, Sociology and Social Phenomena2

Technology, Industry, Agriculture1

Information Science5

Health Care9

FTIR14

Fourier7

Thin-layer chromato4

GCMS1

Tandem Mass Spectro2

Inductively Couple1

HPLC3

Compounds10

Raman1

Photoelectron1

Microscopy2

Nuclear1

Analysis7

Combines1

Spectrometer2

Electrochemical1

Detection4

Metabolite1

PAHs3

SPME1

Purification2

Situ4

Propane1

Liquid2

Hydrocarbon1

Ethylene1

Physical1

Spectra1

Catalytic2

Substances1

Detect1

Thermal1

Concentrations1

Chemicals1

Analytical1

Pathological conditions2

Laboratory3

Catalyst5

Synthesis2

Extract1

Flame1

Tissues2

Contaminants1

Chromatographs3

Materials3

Results1

Reactions2

Stable5

Instruments5

Abundance1

Reaction conditions1

Environmental1