Using Alternative Carrier Gases with Accelerated ASTM D2887 Simulated Distillation Analysis (PDF 1098kB)
... carrier gas can be replaced with either hydrogen or nitrogen. Using these alternate carrier gases allows be easily converted to either hydrogen or nitrogen carrier gas without sacrificing the accuracy...
... Nitrogen Nitrogen is a very good alternative carrier gas because it is readily available in cylinders nitrogen carrier gas, the analysis time will be longer compared to using helium or hydrogen when operated ... D7213, helium carrier gas, hydrogen carrier gas, nitrogen carrier gas, SimDist...
ChromaBLOGraphy: Nitrogen Carrier Gas for GC – Is it Feasible? – Is it Practical?
Jaap de Zeeuw and I discussed nitrogen carrier gas for GC today, its potential benefits, its drawbacks, and how it might be used “successfully” in more laboratories given the finite supply of helium and helium’s higher costs than nitrogen or hydrogen. As sometimes happens, we don’t always agree on the finer points, so maybe we [...]
... changes from light green to grey as oxygen is removed. Use with helium or nitrogen carrier gas only. Do . Otherwise, lifetime of the traps will be greatly reduced. Restek Gas Management System 3. Connect carrier...
Helium, Hydrogen, or Nitrogen—The Choice is Yours: Unique Rtx-CLPesticides Column Set Provides Optimal Results for Organochlorine Pesticides GC-Micro-ECD Analysis Using Any Carrier Gas (PDF 930kB)
... or nitrogen carrier gas can be problematic for methods using a mass spectrometer, methods that employ -CLPesticides and Rtx-CLPesticides2 columns provide adequate resolution when using nitrogen carrier gas, allowing labs...
ChromaBLOGraphy: Using GC column selectivity to overcome potential coelutions when switching to nitrogen carrier gas
The chromatograms below are from the PittCon presentation I mentioned in my earlier post. The first set of two shows a translated method from hydrogen to nitrogen carrier gas. The flow rates, linear velocities, and GC oven program rates for hydrogen versus nitrogen are different (but optimum for each gas). As you can see, the […]
ChromaBLOGraphy: Changing from helium to nitrogen carrier gas in gas chromatography while maintaining separation efficiency and analysis time
In two recent ChromaBLOGraphy posts (see links below) I described the experimental implementation of an idea Jaap de Zeeuw had to use nitrogen carrier gas for GC while maintaining the same separation efficiency and analysis time as what could be achieved by helium carrier gas. Wait, that’s impossible, right?! Not if you go from a […]
When you get into a discussion with Jaap de Zeeuw about gas chromatography, you better have the data to back your position. In fact, that is one of the best things about working with Jaap. He challenges you to get in the lab and prove your point (or his). Not that I have to be [...]
... carrier gas can be replaced with either hydrogen or nitrogen. Using these alternate carrier gases allows can be easily converted to either hydrogen or nitrogen carrier gas without sacrificing the accuracy ... to either hydrogen or nitrogen carrier gas. Because retention times are preserved with proper method ASTM Method D2887 now allows for alternate carrier gases, so hydrogen or nitrogen can replace...
Restek’s Jaap de Zeeuw will be presenting an invited keynote lecture during the plenary session at the 22nd Norwegian Symposium on Chromatography. This focused technical conference will be held January 12, 2016 in Sandefjord, Norway, and is well known for … Continue reading
ChromaBLOGraphy: Switching from Helium to Nitrogen Carrier Gas for GC by Switching from a 30m x 0.25mm x 0.25µm Column to a 20m x 0.15mm x 0.15µm Column
Our own Jaap de Zeeuw is a master chromatographer and he sometimes does his best work while sleeping. Recently he was sharing with me an idea that woke him up in Singapore at 3 AM about switching from helium carrier gas for GC, which is still under threat from a supply shortage, to nitrogen, an […]
...) Nitrogen Nitrogen is a very good alternative carrier gas because it is readily available velocity. This means that even though very good separations can be achieved using nitrogen carrier gas ... Carrier gas changes for SimDist methods, such as ASTM Method D7213, can be easily implemented -based SimDist methods can be easily translated to alternative carrier gases while maintaining ASTM Method D ... SimDist, D7213, helium carrier gas, nitrogen carrier gas, hydrogen carrier gas...
ChromaBLOGraphy: GC-API-MS for BDEs with N2 at BFR2016
OK Jack, enough of the acronyms; this isn’t a word puzzle… Recently I let ChromaBLOGraphy readers know of our work on using gas chromatography (GC) with atmospheric pressure ionization (API) – mass spectrometry (MS) for analysis of brominated diphenyl ethers (BDEs) employing nitrogen (N2) carrier gas, which was presented at BFR2016 (BFR standing for Brominated […]
ChromaBLOGraphy: Donald Duck voices silent and birthday balloons fall everywhere as helium disappears…
I read in a news article that the world’s largest helium reserve in Amarillo, Texas will be gone in five years. Helium is a finite resource, and as a gas chromatographer, this is shocking to me, given that helium is the blood, the life force, for my work. Anyone using helium likely knows its cost [...]
ChromaBLOGraphy: Alternate GC Carrier Gas: Helium to Nitrogen, 30m x 0.25mm x 0.25µm Column to 20m x 0.15mm x 0.15µm Column
I sent my earlier post, “Switching from Helium to Nitrogen Carrier Gas for GC by Switching from a 30m x 0.25mm x 0.25µm Column to a 20m x 0.15mm x 0.15µm Column” to Roy Lautamo at Restek West for review, as he has a critical eye for particulars. He wanted to see finer detail in […]
Author(s): Katarina Oden, Barry Burger, and Amanda Rigdon Restek Corporation Published By: Restek Corporation Year of Publication: 2016 Link: http://www.restek.com/Technical-Resources/Technical-Library/Petroleum-Petrochemical/petro_PCAR2320-UNV Abstract: ASTM Method D2887 now allows for alternate carrier gases, so hydrogen or nitrogen can replace helium carrier gas for … Continue reading
What is this guy talking about, phlogisticated air? Well, that’s what Professor Ellery sometimes called nitrogen when I was still in school at Miskatonic University. In a previous post, I asked readers to consider nitrogen as a GC carrier gas, and following up on my recent post about hydrogen carrier gas, and in the context [...]
Helium, Hydrogen, or Nitrogen—The Choice is Yours: Unique Rtx-CLPesticides Column Set Provides Optimal Results for Organochlorine Pesticides GC-Micro-ECD Analysis Using Any Carrier Gas
... gas options. While switching from helium to either hydrogen or nitrogen carrier gas can be problematic ) Option 3: Simplify the Gas System and Reduce Costs Using Nitrogen Nitrogen carrier gas ... -CLPesticides columns can be used with nitrogen, which give labs the freedom to choose the carrier gas option Using an Rtx-CLPesticides column set is the best strategy for labs considering alternate carrier...
ChromaBLOGraphy: GC-MS with Hydrogen Carrier Gas
At the LECO Australia Separation Science Users Group Meeting last Friday in Sydney, my colleague from South Africa, Peter Gorst-Allman, made a presentation on using hydrogen carrier gas for GC-TOFMS and GCxGC-TOFMS. His preliminary results were quite encouraging, as he noted no obvious deterioration of mass spectra quality for a wide variety of compounds, including [...]
ChromaBLOGraphy: CSR-LVSI GC-ECD OCPs H2 N2
OK, we’re putting it all together now, a large volume splitless injection of 10 µL onto a 5m x 0.53mm IP Deact retention gap press-fitted to a 30m x 0.25mm x 0.25µm Rtx-CLPesticides column for fast GC-ECD analysis of organochlorine pesticides (OCPs) with either hydrogen or nitrogen carrier gases. And in this example, the method [...]
ChromaBLOGraphy: Restek at BFR2016 in Toronto – APGC of Brominated Flame Retardants Using Helium and Nitrogen Carrier Gases
In only a few short weeks, I will be giving a presentation on the analysis of brominated flame retardants at BFR2016 in Toronto. My colleagues and I used an atmospheric pressure ionization mass spectrometer with gas chromatography on an Rtx-1614 (15m x 0.25mm x 0.10µm) column to look at polybrominated diphenyl ethers (PBDEs) in various […]
... ethanol, using either helium or nitrogen carrier gas. ordering note www.restek.com/petro for a complete : Oven Temp.: 50 °C to 430 °C at 10 °C/min (hold 5 min); Carrier Gas: He, constant flow, Flow Rate: 18 m...
ChromaBLOGraphy: Restek’s EZGC Online Suite that includes the Method Translator and Flow Calculator, and a Chromatogram Modeler, wins a TASIA Award – Chris Nelson, One of the Suite Builders
The Analytical Scientist is a very smartly produced scientific magazine full of interesting articles, including many on chromatography. I’ve had the pleasure of working with two of the minds behind this publication, Rich Whitworth and Frank van Geel, on a TAS GCxGC contribution, and have been impressed with the volume of quality work they’ve put […]
...) thermally desorbed E1 nitrogen and sulfur dioxides (NO2 and SO2) F1 ozone (O3) G1 hydrogen sulfide (H2S , L1 molecolar sieve, duration and storage, L2 naphtalene, D2 NEDA, F2 nitrogen dioxide, A8, F1...
Injector: Cool On-column
Injector: PTV On Column