*  Helium vs. hydrogen as a carrier gas in capillary Gas Chromatography - News & Media | Press Releases | Afrox Gases
hydrogen as a carrier gas in capillary Gas ChromatographyTrade NewsAfter the expense of a new gas chromatograph, the last thing ... Purity of the hydrogen from a Hydrogen Generator is also offered as a point when carrier gases are decided upon. Hydrogen from ... hydrogen as a carrier gas in capillary Gas Chromatography Helium vs. hydrogen as a carrier gas in capillary Gas Chromatography ... Selecting a carrier gas is one of the most important parameters that must be decided upon in the method development phase. The ...
  http://www.afrox-gas.co.za/en/news_and_media/press_releases/news_2010-02-08_afrox.html
*  1 - Online NDD forex brokers Options Diagonal
7-stigmastenol Carrier gas: hydrogen for chromatography R. Nephritis, myocarditis, hepatitis and arthritis also have been ... have been precisely measured in gases by microwave or IR spectroscopy, as described in Ch. ...
  http://forex2fx.com/online-ndd-forex-brokers-options-diagonal.html
*  Sample System Best Practices for Water and Hydrocarbon DP Applications on Environmental XPRT
Many chromatography labs are therefore looking for alternative carrier gases and for many GC applications, hydrogen provides a ... OC-F08 fixed gas monitor with the original imported sensor used to detect the Oxygen gas, combustible gas, toxic gas, CO2, etc ... Hydrogen Performance for Carrier Gas. Jul. 2, 2014. Owing to the worldwide helium shortage, many labs are facing supply ... for natural gas fired gas turbines) is critical to determining the quality and the characteristics of the gas stream to be ...
  https://www.environmental-expert.com/articles/sample-system-best-practices-for-water-and-hydrocarbon-dp-applications-453256
*  Application # 2009/0252670. HYDROGEN GENERATOR - Patents.com
A hydrogen generator includes a container with multiple concentric hollow cylinders of chemical hydride fuel disposed within ... generating system 200 may serve to provide a hydrogen carrier gas for portable instruments, such as a gas chromatography ... toy hydrogen. [0030]Generate a calibration gas for a sensor (H2, electrochemical CO, combustible gases, etc). [0031]Emergency ... 0014]Some potential uses for the hydrogen generator 100 may include: [0015]High purity carrier gas for a portable gas ...
  http://www.patents.com/us-20090252670.html
*  Gas Flow Control Unit | Products & Suppliers | Engineering360
... a trusted source of Gas Flow Control Unit information. ... Find Gas Flow Control Unit related suppliers, manufacturers, ... The determination of gases evolved from propellant compositions by gas chromatography 8 Gas flow control unit 9 Oxygen removal ... Flow rate of the carrier and the tested gases was adjusted by a MKS Multi Gas Controller 647C model gas flow con- trol unit ( ... Calibration The calibration of the instrument for trace hydrogen measurements in gas, should be done with a calibration gas. ...
  http://www.globalspec.com/industrial-directory/gas_flow_control_unit
*  Gas Chromatography (Monitoring and Testing) Applications on Environmental XPRT
Results for gas chromatography from leading brands for monitoring and testing. Compare and contact a supplier near you on ( ... Analytical instruments for gas chromatography. Gas Chromatography requires a stable repeatable flow of the carrier gas with ... Gas classification module for Industrial & specialty gases industry. Gas and Specialty Gas Compliance Solution; End-to end ... Multiple calibrations allow the control of Helium, Hydrogen or Nitrogen. Due to the high turn down ratio of 1000:1 and more, a ...
  https://www.environmental-expert.com/monitoring-testing/gas-chromatography/applications
*  US Patent # 5,637,259. Process for producing syngas and hydrogen from natural gas using a membrane reactor - Patents.com
The novel procedures include: (a) providing a double tubular hydrogen transfer rea ... Novel procedures are described for the production of syngas fuel intermediates from abundantly available natural gas. ... column employing helium as carrier gas. H.sub.2 was analyzed with a molecular sieve 5A column employing argon as carrier gas. ... The reactor allows hydrogen to diffuse out through its wall but is impervious to other gases, thereby continuously driving the ...
  http://patents.com/us-5637259.html
*  Hydrogen isotope biogeochemistry - Wikipedia
The gaseous products are separated through gas chromatography (GC) using helium as the carrier gas, followed by a split-flow ... "Hydrogen isotope composition of natural gases from the Tarim Basin and its indication of depositional environments of the ... Conventionally, mass spectrometry, such as Gas Chromatography-Mass Spectrometry(GC-MS) and Gas Chromatography -Time Of Flight( ... Typical hydrogen is called hydrogen-1 or protium and has no neutrons. Deuterium or hydrogen-2 has one neutron and tritium or ...
  https://en.wikipedia.org/wiki/Hydrogen_isotope_biogeochemistry
*  Rumen metabolites serve ticks to exploit large mammals | Journal of Experimental Biology
min-1 to 250°C with hydrogen as carrier gas. The column effluent was split (glass Y-splitter) so that 60% was directed to the ... Gas chromatography-mass spectrometry (GC-MS). The Carbowax column (see above) was installed in a Hewlett-Packard 5890 gas ... Ruminants, comprising the majority of ungulate species, must regularly eruct gases from the foregut to relieve excess pressure ... Gas chromatography linked single sensillum recordings. In ticks, odours are perceived via ∼20 multiporous olfactory sensilla ...
  http://jeb.biologists.org/content/207/24/4283
*  Spectroscopy Home
Although helium has traditionally been the most common carrier gas used for gas chromatography in the U.S., because of ... Hydrogen is becoming the gas of choice among chromatographers because it is easily, safely and inexpensively produced via on- ... The plug-and-play torch with MFC control of all plasma gases eliminates the torch alignment process that is often required when ... Gas Chromatography-Mass Spectrometry Characterization of Vegetable Oil-Derived Potent Antimicrobial Agents. By Racha ...
  http://www.spectroscopyonline.com
*  Ensiling of crops for biogas production: effects on methane yield and total solids determination | Biotechnology for Biofuels |...
Hydrogen was analyzed in an identical system but with argon as the carrier gas. The gas volume was measured using a graduated ... Gas production and energy losses during ensiling. The production of energy-containing gases such as hydrogen and methane during ... Gas composition with respect to methane was determined using gas chromatography and a thermal conductivity detector, as ... The gas volume and the contents of methane and hydrogen were monitored during the entire ensiling period. The results from one ...
  https://biotechnologyforbiofuels.biomedcentral.com/articles/10.1186/1754-6834-4-44
*  Product Focus: Specialty Gases | Lab Manager
The prospect of gas cylinder accidents inspires awe and fear in lab workers. However, a safer alternative exists for some of ... "Not only is hydrogen half the price of helium, but that gas's lower viscosity makes gas chromatography more efficient," Mr. ... labs are using hydrogen as the carrier gas.. According to John Speranza, VP of sales at Proton Onsite (Wallingford, CT) the ... Breathing gases are examined for low levels of hydrocarbons, moisture, and carbon monoxide. Gas chromatography and GCMS are ...
  http://www.labmanager.com/product-focus/2011/09/specialty-gases-rolling-your-own-provides-safety-economy
*  Quality of Cosmetic Argan Oil Extracted by Supercritical Fluid Extraction from Argania spinosa L.
The carrier gas was hydrogen at the rate of 38.02 cm/s, and air and hydrogen were used as auxiliary gases. ... Fatty acid compositions were determined by gas chromatography (GC) on an Agilent Technologies model 6890N chromatograph with a ... High-performance liquid chromatography (HPLC) analysis of the total tocopherol present in the extracts was performed using an ...
  https://www.hindawi.com/journals/jchem/2013/408194/
*  Thermal conductivity detector - Wikipedia
Since most compounds have a thermal conductivity much less than that of the common carrier gases of helium or hydrogen, when an ... Katharometers are used medically in lung function testing equipment and in gas chromatography. The results are slower to obtain ... The gases are examined by comparing the rate of loss of heat from the heating coils into the gas. The coils are arranged in a ... If analyzing for hydrogen, the peak will appear as negative when helium is used as the reference gas. This problem can be ...
  https://en.wikipedia.org/wiki/Thermal_conductivity_detector
*  Aluminium oxide nanoparticle - Wikipedia
... as an inert carrier during liquid-distribution chromatography) Desiccant (for drying of gases (deep dehydration to dew points ... adsorbent for gas and liquid adsorption chromatography (adsorption); for ion-exchange and sediment-sorption chromatography in ... for vapor recovery of hydrogen fluoride from gases of super phosphate and electrolysis) for brightening solutions in sugar ... used as a catalyst and carrier of catalysts. Nanoscale oxide due to the small diameter of the particles/fibers, high specific ...
  https://en.wikipedia.org/wiki/Aluminium_oxide_nanoparticle
*  Gas Chromatography - Vacuum Ultraviolet Spectroscopy (GC-VUV) - Wikipedia
Nearly all compounds absorb in the VUV region of the electromagnetic spectrum with the exception of carrier gases hydrogen, ... Gas Chromatography - Vacuum Ultraviolet (GC-VUV) spectroscopy is a recent innovation introduced in 2014 as a universal ... guidelines, or more broadly, International Council for Harmonization (ICH) Guideline Q3C(R6). The gas chromatography (GC) ... detection platform for gas chromatography. The vacuum ultraviolet (VUV) absorbance spectrum measured by VUV detectors (120 - ...
  https://en.wikipedia.org/wiki/Gas_Chromatography_-_Vacuum_Ultraviolet_Spectroscopy_(GC-VUV)
*  Noble gas - Wikipedia
Helium is used as the carrier medium in gas chromatography, as a filler gas for thermometers, and in devices for measuring ... The noble gases have also been referred to as inert gases, but this label is deprecated as many noble gas compounds are now ... Since the Hindenburg disaster in 1937, helium has replaced hydrogen as a lifting gas in blimps and balloons due to its ... Inert gas, for any gas that is not reactive under normal circumstances. Industrial gas Neutronium Noble gas configuration ...
  https://en.wikipedia.org/wiki/Noble_gas
*  Ion source - Wikipedia
Hydrogen gas is introduced by a pulsed gas valve. Caesium is often used to lower the work function of the cathode, enhancing ... An uncharged carrier gas such as nitrogen is sometimes used to help nebulize the liquid and to help evaporate the neutral ... Some common reagent gases include: methane, ammonia, and isobutane. Inside the ion source, the reagent gas is present in large ... It transfers ions from the liquid phase to the gas phase for analysis. It is particularly useful in liquid chromatography-mass ...
  https://en.wikipedia.org/wiki/Ion_source
*  Methanizer - Wikipedia
... or by using hydrogen as carrier gas. An alternative design has been suggested recently, which catalytically combusts all ... Methanizer is an appliance used in gas chromatography, which allows to detect very low concentrations of carbon monoxide and ... by treating with either oxygen or hydrogen. If sulfur containing gases are present in the sample, a switching valve should be ... Set normal carrier gas flow (25-30 mL/min for 1/8" columns). Either He or N2 is satisfactory. Set H2 flow to the catalyst at ...
  https://en.wikipedia.org/wiki/Methanizer
*  Helium - Wikipedia
Helium is a commonly used carrier gas for gas chromatography. The age of rocks and minerals that contain uranium and thorium ... that of hydrogen. Helium is the least water-soluble monatomic gas, and one of the least water-soluble of any gas (CF4, SF6, and ... A number of inert shielding gases are used in gas tungsten arc welding, but helium is used instead of cheaper argon especially ... hydrogen, and 12% an unidentifiable gas. With further analysis, Cady and McFarland discovered that 1.84% of the gas sample was ...
  https://en.wikipedia.org/wiki/Helium
*  Nihonium - Wikipedia
The nihonium atoms were synthesized in a recoil chamber and then carried along Teflon capillaries at 70 °C by a carrier gas to ... The bonding is provided by the 7p1/2 electron of nihonium and the 1s electron of hydrogen. However, the SO interaction causes ... suggesting either that nihonium was similar in volatility to the noble gases (and thus diffused away too quickly to be detected ... and that high-temperature techniques such as vacuum chromatography would be necessary to further probe the behavior of ...
  https://en.wikipedia.org/wiki/Nihonium
*  Heather Willauer - Wikipedia
... and hydrogen gases into complex hydrocarbon liquids to synthesize jet fuel for Navy and Marine aviation, and fuel for the U.S. ... In 2014, Willauer said that the catalyst could be changed to make various fuels such as methanol and natural gas, as well as ... Journal of Chromatography B. 711 (1-2): 237-244. doi:10.1016/S0378-4347(97)00662-2. CS1 maint: Uses authors parameter (link) ... a plausible first step of implementation would be for American nuclear-powered aircraft carriers (the Nimitz-class and the ...
  https://en.wikipedia.org/wiki/Heather_Willauer
*  Silica gel - Wikipedia
It was used in World War I for the adsorption of vapors and gases in gas mask canisters.[citation needed] The synthetic route ... In chemistry, silica gel is used in chromatography as a stationary phase. In column chromatography, the stationary phase is ... Type B - translucent white pellets, pore diameter: 4.5-7.0 nm, liquid adsorbents, drier and perfume carriers, also may be used ... It will react with hydrogen fluoride, fluorine, oxygen difluoride, chlorine trifluoride, strong acids, strong bases, and ...
  https://en.wikipedia.org/wiki/Silica_gel
*  Argon - Wikipedia
Argon may be used as the carrier gas in gas chromatography and in electrospray ionization mass spectrometry; it is the gas of ... Industrial gas Oxygen-argon ratio, a ratio of two physically similar gases, which has importance in various sectors. Meija, J ... Argon fluorohydride (HArF), a compound of argon with fluorine and hydrogen that is stable below 17 K (−256.1 °C; −429.1 °F), ... It is in group 18 of the periodic table and is a noble gas. Argon is the third-most abundant gas in the Earth's atmosphere, at ...
  https://en.wikipedia.org/wiki/Argon
*  List of British innovations and discoveries - Wikipedia
... others Discovers hydrogen as a colorless, odourless gas that burns and can form an explosive mixture with air - Henry Cavendish ... Congreve rocket - William Congreve Harrier Jump Jet - VTOL (Vertical Take Off and Landing aircraft) Aircraft Carrier - HMS ... The noble gases: Sir William Ramsay (1852-1916) The Cloud chamber - Charles Thomson Rees Wilson (1869-1959) Pioneering work on ... Robert Hooke Partition chromatography - Richard Laurence Millington Synge and Archer J.P. Martin Arnold Frederic Wilkins - ...
  https://en.wikipedia.org/wiki/List_of_British_innovations_and_discoveries