Development of a Double Vacuum Furnace Tube and Its Application in Gas Composition Determination during Rock Heating Degassing
BACKGROUND The analysis of gas chemical composition in rock and mineral can provide important information and constraints for the study of different geochemical processes of lithospheric mantle, redox environment in the earth, and water circulation in the deep earth. Heating rock and ore samples to...
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| Format: | Article |
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Science Press, PR China
2019-09-01
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| Series: | Yankuang ceshi |
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| Online Access: | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201812190138 |
| _version_ | 1797953839170584576 |
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| author | GAO Zi-han LI Li-wu WANG Yu-hui CAO Chun-hui HE Jian |
| author_facet | GAO Zi-han LI Li-wu WANG Yu-hui CAO Chun-hui HE Jian |
| author_sort | GAO Zi-han |
| collection | DOAJ |
| description | BACKGROUND The analysis of gas chemical composition in rock and mineral can provide important information and constraints for the study of different geochemical processes of lithospheric mantle, redox environment in the earth, and water circulation in the deep earth. Heating rock and ore samples to remove gas is a common experimental method. A single quartz glass tube is used as the sample tube. Irregular voids in quartz glass structure make gas easy to diffuse and permeate at high temperature. The double vacuum furnace tubes consisting of molybdenum and tantalum crucibles are generally used for the analysis of rare gas isotope composition, but seldom used for the analysis of gas chemical composition. The device has a complex structure, is not easy to assemble and disassemble, and is easily damaged. OBJECTIVES To solve the problems contained in the sample-filling tube proposed in the background research. METHODS A double vacuum sampling furnace tube composed of quartz glass and metal parts had been developed. The furnace tube had the characteristics of small size, easy assembly, disassembly and movement. Under the same experimental conditions, the result was compared with that of a single quartz glass tube. RESULTS H2 concentration measured by the double vacuum sampling tube was higher than that measured by the single quartz glass tube under the same experimental conditions, no matter which type of sample was heated to degas at 500℃ or 950℃. CONCLUSIONS The closure of the double vacuum furnace tube is better than that of the single quartz glass tube, which is conducive to obtain more real gas chemical composition in the sample. |
| first_indexed | 2024-04-10T23:08:26Z |
| format | Article |
| id | doaj.art-f041d57024fa42d3946cd6f611e5818f |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T23:08:26Z |
| publishDate | 2019-09-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-f041d57024fa42d3946cd6f611e5818f2023-01-13T10:00:57ZengScience Press, PR ChinaYankuang ceshi0254-53572019-09-0138546947810.15898/j.cnki.11-2131/td.201812190138ykcs-38-5-469Development of a Double Vacuum Furnace Tube and Its Application in Gas Composition Determination during Rock Heating DegassingGAO Zi-han0LI Li-wu1WANG Yu-hui2CAO Chun-hui3HE Jian4Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaNorthwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaNorthwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaNorthwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaNorthwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaBACKGROUND The analysis of gas chemical composition in rock and mineral can provide important information and constraints for the study of different geochemical processes of lithospheric mantle, redox environment in the earth, and water circulation in the deep earth. Heating rock and ore samples to remove gas is a common experimental method. A single quartz glass tube is used as the sample tube. Irregular voids in quartz glass structure make gas easy to diffuse and permeate at high temperature. The double vacuum furnace tubes consisting of molybdenum and tantalum crucibles are generally used for the analysis of rare gas isotope composition, but seldom used for the analysis of gas chemical composition. The device has a complex structure, is not easy to assemble and disassemble, and is easily damaged. OBJECTIVES To solve the problems contained in the sample-filling tube proposed in the background research. METHODS A double vacuum sampling furnace tube composed of quartz glass and metal parts had been developed. The furnace tube had the characteristics of small size, easy assembly, disassembly and movement. Under the same experimental conditions, the result was compared with that of a single quartz glass tube. RESULTS H2 concentration measured by the double vacuum sampling tube was higher than that measured by the single quartz glass tube under the same experimental conditions, no matter which type of sample was heated to degas at 500℃ or 950℃. CONCLUSIONS The closure of the double vacuum furnace tube is better than that of the single quartz glass tube, which is conducive to obtain more real gas chemical composition in the sample.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201812190138double vacuum furnace tubesingle quartz glass tubegas chromatographygas-released from rock |
| spellingShingle | GAO Zi-han LI Li-wu WANG Yu-hui CAO Chun-hui HE Jian Development of a Double Vacuum Furnace Tube and Its Application in Gas Composition Determination during Rock Heating Degassing Yankuang ceshi double vacuum furnace tube single quartz glass tube gas chromatography gas-released from rock |
| title | Development of a Double Vacuum Furnace Tube and Its Application in Gas Composition Determination during Rock Heating Degassing |
| title_full | Development of a Double Vacuum Furnace Tube and Its Application in Gas Composition Determination during Rock Heating Degassing |
| title_fullStr | Development of a Double Vacuum Furnace Tube and Its Application in Gas Composition Determination during Rock Heating Degassing |
| title_full_unstemmed | Development of a Double Vacuum Furnace Tube and Its Application in Gas Composition Determination during Rock Heating Degassing |
| title_short | Development of a Double Vacuum Furnace Tube and Its Application in Gas Composition Determination during Rock Heating Degassing |
| title_sort | development of a double vacuum furnace tube and its application in gas composition determination during rock heating degassing |
| topic | double vacuum furnace tube single quartz glass tube gas chromatography gas-released from rock |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201812190138 |
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