A Total Collection Gas Chromatographic System--Absorption of Carbon Dioxide Carrier Gas in Alkali

1969 ◽  
Vol 7 (5) ◽  
pp. 296-297 ◽  
Author(s):  
C. A. Bache ◽  
D. J. Lisk
Keyword(s):  
Carbon Dioxide ◽  
Chromatographic System ◽  
Carrier Gas

Chromatographic separation of hydrocarbon gases on zeolites with the use of carbon dioxide as carrier gas

1984 ◽  
Vol 289 ◽  
pp. 95-103 ◽  
Author(s):  
T.G. Andronikashvili ◽  
V.G. Berezkin ◽  
L.Ya. Laperashvili ◽  
N.A. Nadiradze
Keyword(s):  
Carbon Dioxide ◽  
Chromatographic Separation ◽  
Hydrocarbon Gases ◽  
Carrier Gas

scholarly journals Design of Novel Ceramic Preconcentrator and Integration in Gas Chromatographic System for Detection of Ethylene Gas from Ripening Bananas

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2589 ◽  
Author(s):  
Nayyer Zaidi ◽  
Muhammad Tahir ◽  
Micheal Vellekoop ◽  
Walter Lang
Keyword(s):  
Carbon Dioxide ◽  
Detection Limit ◽  
Aluminum Nitride ◽  
Environmental Monitoring ◽  
Food Industry ◽  
Heat Pulse ◽  
Interference Signal ◽  
Chromatographic System

In this paper, a novel ceramic preconcentrator is manufactured using aluminum nitride (ALN) ceramics. The preconcentrator consists of a heater, a preconcentrator body, a gas inlet and a gas outlet. The adsorption material, Carbosieve SII, is loaded into the preconcentrator. The preconcentrator is integrated with a previously developed micro gas chromatographic system filled with ethylene. When operated, adequate ethylene gas is adsorbed into the preconcentrator. The application of heat pulse also successfully desorbs the ethylene gas. Tests are conducted with ethylene gas at concentrations of 10 ppm, 5 ppm and 2.5 ppm and 400 ppb, respectively. The system is also tested with ethylene gas from ripening bananas over a period of three days. No interference signal is observed in the chromatogram because of other ripening gases (e.g., carbon dioxide, oxygen, alcohol) and humidity. A detection limit of 25 ppb is realized with this system. The developed preconcentrator has several applications, e.g., in food industry and environmental monitoring.

scholarly journals Improved carbon dioxide storage over clay-supported perhydroxylated glucodendrimer

2017 ◽  
Vol 95 (9) ◽  
pp. 999-1007 ◽  
Author(s):  
Saadia Nousir ◽  
Gerlainde Yemelong ◽  
Sameh Bouguedoura ◽  
Yoann M. Chabre ◽  
Tze Chieh Shiao ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Low Cost ◽  
Nitrogen Adsorption ◽  
Interlayer Spacing ◽  
Physical Interaction ◽  
Thermal Regeneration ◽  
Retention Capacity ◽  
Oh Groups ◽  
Carrier Gas ◽  
Surface Basicity

Low-cost biosourced hybrid microporous adsorbents with improved affinity towards carbon dioxyde (CO2) were prepared through the incorporation of various amounts of glucosylated dendrimer into bentonite- and montmorillonite-rich composite materials. Characterization by nitrogen adsorption–desorption isotherms, surface specific and pore size analyses (BET and BJH), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) revealed changes in the interlayer spacing and textural structure of the materials. Thermal programmed desorption measurements (TPD) showed significant improvements of the retention capacity of CO2 (CRC) and water (WRC). This was explained in terms of enhancement of both surface basicity and hydrophilic character due to the incorporation of terminal polyhydroxyl groups. The CRC was found to vary according to the previous saturation time with CO2 and the carrier gas throughput. CO2 was totally released upon temperature not exceeding 80 °C or even at room temperature upon strong carrier gas stream, thus providing evidence that CO2 capture involves almost exclusively physical interaction with the OH groups of the dendrimer. This result opens promising prospects for the reversible capture of carbon dioxide with easy release without thermal regeneration, more particularly when extending this concept to biosourced dendrimers.

scholarly journals CAPILLARY GAS CHROMATOGRAPHY USING CARBON DIOXIDE AS THE CARRIER GAS

1991 ◽  
Vol 7 (Supple) ◽  
pp. 219-222 ◽  
Author(s):  
TSUNEAKI MAEDA ◽  
HIROKO TATEMATSU ◽  
FUJIO MORISHITA
Keyword(s):  
Carbon Dioxide ◽  
Gas Chromatography ◽  
Capillary Gas Chromatography ◽  
Carrier Gas

Use of Carbon Dioxide as Carrier Gas in Gas Chromatography

Nature ◽  
1962 ◽  
Vol 193 (4815) ◽  
pp. 575-576 ◽  
Author(s):  
ARTHUR KARMEN ◽  
IRMGARDE McCAFFREY ◽  
ROBERT L. BOWMAN
Keyword(s):  
Carbon Dioxide ◽  
Gas Chromatography ◽  
Carrier Gas

scholarly journals A Gas Chromatographic System for the Detection of Ethylene Gas Using Ambient Air as a Carrier Gas

Sensors ◽  
2017 ◽  
Vol 17 (10) ◽  
pp. 2283 ◽  
Author(s):  
Nayyer Abbas Zaidi ◽  
Muhammad Waseem Tahir ◽  
Michael J. Vellekoop ◽  
Walter Lang
Keyword(s):  
Ambient Air ◽  
Chromatographic System ◽  
Carrier Gas

scholarly journals Mortality of kiwifruit pests (Coccoidea) exposed to ethyl formate delivered using either carbon dioxide or nitrogen carrier gases

2018 ◽  
Vol 71 ◽  
pp. 102-111
Author(s):  
Samuel D.J. Brown ◽  
Natalie E.M. Page-Weir ◽  
Amanda J. Hawthorne ◽  
Reuben T. Wilkinson ◽  
Lisa E. Jamieson ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Low Temperatures ◽  
Insect Pests ◽  
Ethyl Formate ◽  
Treatment Temperature ◽  
Carrier Gas ◽  
Respiration Rates ◽  
Pseudococcus Viburni ◽  
Carrier Gases ◽  
Carbon Dioxide Co2

Ethyl formate (EF) is used as a fumigant against insect pests on many commodities. Delivery of EF uses a carrier gas, usually carbon dioxide (CO2), to reduce its flammability. However, CO2 is expensive and can only be delivered relatively slowly. Nitrogen (N2) has been proposed as an alternative. The efficacy of EF delivered using CO2 or N2, was evaluated at 5 and 15˚C, against two important postharvest pests of kiwifruit (greedy scale (Hemiberlesia rapax, Hemiptera: Diaspididae) and obscure mealybug (Pseudococcus viburni, Hemiptera: Pseudococcidae). Mortalities of both insect species were higher in the presence of CO2 than N2. There was a strong interaction with treatment temperature: N2 at 5˚C resulted in low mortality across both species. Greedy scale was more susceptible to EF than obscure mealybug across all treatments. Nitrogen as a carrier gas for EF substantially lowered the efficacy of EF as an insecticidal fumigant, relative to CO2. This is hypothesised to be caused by differing respiration rates across temperatures and CO2 concentrations. Solutions for rapid CO2 delivery should be explored over further trials with N2 at low temperatures.

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