Trace analysis of impurities in bulk gases by gas chromatography-pulsed discharge helium ionization detection with “heart-cutting” technique

Weijun, Yao

doi:10.1016/j.chroma.2007.08.047

Cited by 13 publications

(3 citation statements)

References 6 publications

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“…Wentworth et al also showed the detector was linear for these compounds over a broad range of concentrations. GC-HePPD has since been used in a number of applications, including measurements of organic and inorganic gases in air , , neon in air and water ,and for process control in ultra high purity gases . Here we evaluate GC-HePPD for high quality measurements of atmospheric H 2 .…”

Section: Methodsmentioning

confidence: 99%

Application of Gas Chromatography with a Pulsed Discharge Helium Ionization Detector for Measurements of Molecular Hydrogen in the Atmosphere

Novelli

Crotwell

Hall

2009

Environ. Sci. Technol.

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The Earth's troposphere contains approximately 160 Tg H2 with an average surface mixing ratio approximately 530 nmole mole(-1) (ppb) and lifetime of 2 years. Atmospheric H2 is typically measured using gas chromatography (GC) followed by hot mercuric oxide reduction detection (GC-HgO). Here we describe an alternate method using GC with a pulsed-discharge helium ionization detector (HePPD). HePPD is a universal detector; when applied to H2, the GC-HePDD provides a wide linear range (0.3% over a range of 2000 ppb), a detection limit of approximately 0.03 pg, high precision (0.12%) and a stable response (+/-1.6% over nearly one year). HePPD is compared to HgO reduction using a suite of gravimetrically prepared reference gases spanning remote to urban concentrations. The method is excellent for atmospheric measurements as it provides a wide linear range with high precision, stability and reproducibility. We suggest these characteristics will improve the ability to maintain reference gases and improve measurements of atmospheric H2, thus providing better constraints on potential future changes in its sources and sinks.

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Section: Methodsmentioning

confidence: 99%

Application of Gas Chromatography with a Pulsed Discharge Helium Ionization Detector for Measurements of Molecular Hydrogen in the Atmosphere

Novelli

Crotwell

Hall

2009

Environ. Sci. Technol.

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“…MDGC analysis using two or more capillary columns provides a significantly greater separation power, along with a good compatibility to a conventional mass spectrometric detector (MSD). Column switching analysis using conventional packed-columns is still carried out for difficult separation problems that are not solved by a simple GC separation on single column, such as the determination of impurities [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

On-Line Coupling of Gas Chromatography-Gas Chromatography for the Determination of Coumarin in Kerosene

et al. 2019

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Determination of coumarin in kerosene was studied. Kerosene is discriminated from taxed fuel oil by the addition of coumarin in Japan. A fluorescence detection method has been widely used to check the legal distribution of kerosene, however, the method is inevitably resulting waste fluid consisted both of the aqueous alkaline solution and the organic solvent. By introducing a heart-cutting analysis with a set of on-line coupled packed-capillary and open-tubular columns, coumarin in kerosene was successfully determined in gas chromatography. The developed technique showed several advantageous features such as a significantly reduced waste, quick and easy separation/determination, along with a reduced sample volume required in the determination process.

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“…MDGC analysis using two or more capillary columns provides a greater separation power, along with good compatibility to a mass spectrometric detector (MSD). Column switching analysis using conventional packed-columns is still carried out for the determination of impurities, [4][5][6] although the basic concept was already developed in 1950s. 7 In our previous investigations, novel packed-capillary columns for a rapid temperature-programmed GC analysis was developed with a thin-wall stainless-steel capillary of 1.0 mm i.d.…”

Section: Introductionmentioning

confidence: 99%

Column Switching Analysis with Packed-Capillary Columns in Gas Chromatography

2012

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By introducing sequentially connected two packed-capillary columns, a wide range of volatile compounds were successfully separated in gas chromatography. The hyphenation of two packed-capillary columns of 1.0 mm i.d. was accomplished using a conventional 6-port valve, where the temperature of each column was individually controlled in the respective column ovens. These columns were prepared with two different types of sorbents, each having a different selectivity, in order to separate a wide range of compounds, including permanent gases, volatile alcohols and other typical volatile organic compounds. With a simple valve switching operation, the complex sample mixtures were rapidly separated and detected.

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Trace analysis of impurities in bulk gases by gas chromatography-pulsed discharge helium ionization detection with “heart-cutting” technique

Cited by 13 publications

References 6 publications

Application of Gas Chromatography with a Pulsed Discharge Helium Ionization Detector for Measurements of Molecular Hydrogen in the Atmosphere

Application of Gas Chromatography with a Pulsed Discharge Helium Ionization Detector for Measurements of Molecular Hydrogen in the Atmosphere

On-Line Coupling of Gas Chromatography-Gas Chromatography for the Determination of Coumarin in Kerosene

Column Switching Analysis with Packed-Capillary Columns in Gas Chromatography

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