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Using Alternative Carrier Gases with Accelerated ASTM D2887 Simulated Distillation Analysis (PDF 1098kB)

...Dist column and Restek’s EZGC online method translator, existing methods based on helium carrier gas can Method Helium carrier gas is traditionally used for ASTM D2887 because it is nonflammable and gives good...

Alternative Carrier Gases for ASTM D7213 Simulated Distillation Analysis (PDF 1367kB)

... an MXT-1HT SimDist Column under typical conditions using helium as the carrier gas. Introduction Crude . A traditional ASTM D7213 analysis using helium carrier gas is shown in Figure 1. GC_PC1285 Column MXT-1HT Sim ... D7213, helium carrier gas, hydrogen carrier gas, nitrogen carrier gas, SimDist...

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)

... many labs to explore alternate carrier gas options. While switching from helium to either hydrogen carrier gas option provides significant cost savings compared to helium, but it is important to consider...

Micropacked Columns Instruction Sheet (PDF 14kB)

... be preconditioned prior to use. To condition: 1. Connect the column to a helium carrier gas source using the ferrule —Typical pressures needed for 20mL/min. helium flow at 25°C* Tubing 2m x 1mm ID 1m x 1mm ID 2m x 0.75mm ID 1m x 0...

Using Alternative Carrier Gases with Accelerated ASTM D2887 Simulated Distillation Analysis

...Dist column and Restek’s EZGC online method translator, existing methods based on helium carrier gas Helium Method Helium carrier gas is traditionally used for ASTM D2887 because ... helium carrier gas for simulated distillation. Here, we show that with an MXT-1HT SimDist column to either hydrogen or nitrogen carrier gas. Because retention times are preserved with proper method...

Analysis of Trace Hydrocarbon Impurities in 1,3-Butadiene Using Optimized Rt-Alumina BOND/MAPD PLOT Columns (PDF 408kB)

... of 100 mL/min. Helium carrier gas at 20 psi (140 kPa) was used. Different oven programs were used Rate: 100 mL/min. Oven Oven Temp: 70 °C (hold 5 min.) to 200 °C at 10 °C/min. (hold 0 min.) Carrier...

EZ No-Vent GC-MS Connector for Agilent 5971/5972, 5973, and 5975 Mass Spectrometers Instruction Sheet (PDF 497kB)

... Time @ 40 °C (min) *Values determined with helium carrier gas and an oven temperature of 40 °C . Start a flow of carrier gas. Pump down MS. Use argon to check the vacuum side of the system for leaks...

Alternative Carrier Gases for ASTM D7213 Simulated Distillation Analysis

... be greater than 0.5 and must not exceed 2. A traditional ASTM D7213 analysis using helium carrier gas efficient carrier gas in comparison to helium and hydrogen when operated at their respective optimum ... Carrier gas changes for SimDist methods, such as ASTM Method D7213, can be easily implemented in your daily process. Using MXT-1HT SimDist columns and EZGC method translation software, helium ... SimDist, D7213, helium carrier gas, nitrogen carrier gas, hydrogen carrier gas...

Analyzing Oxygenates in Petroleum-Contaminated Wastewater (PDF 285kB)

... / 5971A GC/MS detector fitted with a K&M electron multiplier. With helium carrier gas at a constant 1.3m Carrier gas: helium, constant flow Flow rate: 1.3 mL/min. Dead time: 1.47 min. @ 35°C Oven temp.: 35°C...

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 […]

News: Using Alternative Carrier Gases with Accelerated ASTM D2887 Simulated Distillation Analysis

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

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 carrier gas option provides significant cost savings compared to helium, but it is important to consider ... -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...

Large Volume Splitless Injection Using an Unmodified Split/Splitless Inlet and GC-TOFMS for Pesticides and Brominated Flame Retardants (PDF 1051kB)

.../min., with a corrected constant flow of 2 mL/min. helium carrier gas. All analyses were performed on a LECO Pegasus GC .60 min.) to 320 °C at 30 °C/min. (hold 1.07 min.) Carrier Gas He, constant flow Flow Rate: 2 m...

Excellent Resolution of EU-Regulated Azo Dye Aryl Amines by GC-MS on the Rxi-35Sil MS GC Column (PDF 857kB)

... ID column using helium carrier gas. Excellent column inertness results in good peak shape 5 min) Carrier Gas He, constant flow Flow Rate: 2.0 mL/min Detector MS Mode: Scan Scan Program...

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 […]

Fingerprinting Crude Oils and Tarballs using Biomarkers and Comprehensive Two-Dimensional Gas Chromatography (PDF 2138kB)

....# 13950) in the secondary oven. Helium was used as the carrier gas with a corrected constant flow of 1 m for the carrier gas is critical. In this case, since helium carrier gas and a 60 m x 0.25 mm ID column were used...

ChromaBLOGraphy: Organochlorine Pesticides Analyzed by Gas Chromatography – Electron Capture Detector with Hydrogen Carrier Gas and Concurrent Solvent Recondensation – Large Volume Splitless Injection

Are you a gas chromatographer feeling the sting from either not getting helium carrier gas or paying too much money for it when it is available?  Hydrogen is a completely viable alternative and I recently used it to do fast GC-ECD organochlorine pesticide analysis with a 30m x 0.25mm x 0.25µm Rtx-CLPesticides column.  I also used [...]

Evaluation of Dispersive and Cartridge Solid Phase Extraction (SPE) Cleanups for Multiresidue Pesticides in QuEChERS Extracts of Finished Tobacco Using GCxGC-TOFMS (PDF 4409kB)

... temperature offset. The carrier gas was helium operated under corrected constant flow conditions at 2 m 0.25 mm x 0.25 μm Rxi-5Sil MS column (Restek, cat. #13620) with helium carrier gas operated...

Analysis of Trace Oxygenates in Petroleum-Contaminated Wastewater, Using Purge-and-Trap GC-MS (U.S. EPA Methods 5030B & 8260) (PDF 477kB)

...-MS detector fitted with a K&M electron multiplier was used for the analysis. Helium carrier gas was adjusted .: 110 °C Oven Oven Temp: 35 °C (hold 7 min) Carrier Gas He, constant flow Flow Rate: 1.3 m...

Lowering Detection Limits for 1,4-Dioxane in Drinking Water Using Large Volume Injection in an Unmodified Splitless GC Inlet (PDF 722kB)

.../min, with a constant flow of 1.4 mL/ min helium carrier gas. All analyses were performed on an Agilent 7890A GC ) Carrier Gas He, constant flow Flow Rate: 1.4 mL/min Linear Velocity: 30.556 cm/sec @ 35 °C Detector MS...

Analysis of Nicotine and Impurities in Electronic Cigarette Solutions and Vapor (PDF 862kB)

... chromatography–flame ionization detector (GC-FID) methods (using both helium and hydrogen carrier gas) were The Markes UNITY system was operated with helium carrier gas for desorbing the thermal desorption tubes...

News: Jaap de Zeeuw to Give Plenary Address at 22nd Norwegian Symposium on Chromatography

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: Setting Purge Valve Time for Splitless Injection

Properly setting the purge valve time for a splitless injection is important to maximize transfer of components with low volatility, while minimizing solvent introduction that can produce a long, tailing peak that might interfere with the determination of compounds of interest. Generally speaking, a purge valve time should be approximately 1.5 to 2 times the [...]

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: 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 […]

A Guide to Preparing and Analyzing Chlorinated Pesticides (PDF 4038kB)

..., in the helium carrier gas has been found when high endrin breakdown has occurred. To check for contaminated in the carrier gas, active metal surface, a non-deactivated liner or septa particles. The carrier gas is usually...

Analysis of Trace Hydrocarbon Impurities in 1,3-Butadiene Using Optimized Rt-Alumina BOND/MAPD PLOT Columns

... of 100 mL/min. Helium carrier gas at 20 psi (140 kPa) was used. Different oven programs were used...

Excellent Resolution of EU-Regulated Azo Dye Aryl Amines by GC-MS on the Rxi-35Sil MS GC Column

... the ruggedness of a 0.25 mm ID column using helium carrier gas. Excellent column inertness results in good peak...

Analysis of Trace Oxygenates in Petroleum-Contaminated Wastewater, Using Purge-and-Trap GC-MS (U.S. EPA Methods 5030B & 8260)

... multiplier was used for the analysis. Helium carrier gas was adjusted to 1.3 mL/min constant flow. The oven compounds such as MTBE and TBA coelute on many of the GC column stationary phases in capillary gas...

Large Volume Splitless Injection Using an Unmodified Split/Splitless Inlet and GC-TOFMS for Pesticides and Brominated Flame Retardants

.../min., with a corrected constant flow of 2 mL/min. helium carrier gas. All analyses were performed on a LECO Pegasus GC Abstract Large volume splitless injection for gas chromatography typically requires...

Evaluation of Dispersive and Cartridge Solid Phase Extraction (SPE) Cleanups for Multiresidue Pesticides in QuEChERS Extracts of Finished Tobacco Using GCxGC-TOFMS

... with a +20 °C modulator temperature offset. The carrier gas was helium operated under corrected constant . #13620) with helium carrier gas operated in constant flow at 2 mL/min. The oven temperature program...

Lowering Detection Limits for 1,4-Dioxane in Drinking Water Using Large Volume Injection in an Unmodified Splitless GC Inlet

...L/min helium carrier gas. All analyses were performed on an Agilent 7890A GC with a 5975C quadrupole mass -LVSI) for gas chromatography typically requires a special injection port such as a programmable temperature...

Analysis of Nicotine and Impurities in Electronic Cigarette Solutions and Vapor

... with helium carrier gas for desorbing the thermal desorption tubes and the cryogenic trap during ballistic . For e-cigarette solutions, rapid GC-FID methods using helium or hydrogen carrier gas were established...

Fingerprinting Crude Oils and Tarballs using Biomarkers and Comprehensive Two-Dimensional Gas Chromatography

... cat.# 13950) in the secondary oven. Helium was used as the carrier gas with a corrected constant to a theoretical plate (HETP) in the van Deemter curve for the carrier gas is critical. In this case, since helium ... Comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GCx...

For advanced chromatogram searching, please check out our Chromatogram Library Search Tool.

Simulated Distillation with Helium Carrier Gas on MXT-1HT SimDist by ASTM D2887-B (Accelerated)

GC_PC1303

Column: MXT-1HT SimDist, 10 m, 0.53 mm ID, 0.88 µm (cat.# 70134)
Injector: Cool On-column
Detector: FID

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