| 高梓涵,李立武,王玉慧,曹春辉,贺坚.双真空炉管的研制及其在岩石加热脱气气体组分测试中的应用[J].岩矿测试,2019,38(5):469-478 |
| 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[J].Rock and Mineral Analysis,2019,38(5):469-478.DOI:10.15898/j.cnki.11-2131/td.201812190138 |
| 双真空炉管的研制及其在岩石加热脱气气体组分测试中的应用 |
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| Development of a Double Vacuum Furnace Tube and Its Application in Gas Composition Determination during Rock Heating Degassing |
| 投稿时间：2018-12-19 修订日期：2019-05-14 |
| DOI：10.15898/j.cnki.11-2131/td.201812190138 |
| 中文关键词: 双真空炉管 单石英玻璃管 气相色谱法 岩石脱气 |
| 英文关键词: double vacuum furnace tube single quartz glass tube gas chromatography gas-released from rock |
| 基金项目:国家自然科学基金资助项目（41473062） |
| 作者 | 单位 | E-mail | | 高梓涵 | 中国科学院西北生态环境资源研究院, 甘肃 兰州 730000
甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室, 甘肃 兰州 730000
中国科学院大学, 北京 100049 | | | 李立武 | 中国科学院西北生态环境资源研究院, 甘肃 兰州 730000
甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室, 甘肃 兰州 730000 | llwu@lzb.ac.cn | | 王玉慧 | 中国科学院西北生态环境资源研究院, 甘肃 兰州 730000
甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室, 甘肃 兰州 730000
中国科学院大学, 北京 100049 | | | 曹春辉 | 中国科学院西北生态环境资源研究院, 甘肃 兰州 730000
甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室, 甘肃 兰州 730000 | | | 贺坚 | 中国科学院西北生态环境资源研究院, 甘肃 兰州 730000
甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室, 甘肃 兰州 730000 | |
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| 摘要点击次数: 231 |
| 全文下载次数: 215 |
| 中文摘要: |
| 分析岩石矿物中的气体化学组成，可为岩石圈地幔的不同地球化学过程、地球内部氧化还原环境以及水在深部地球中的循环等研究提供重要的信息与约束条件。对岩矿样品加热使气体脱出是一种常用的实验手段，使用单石英玻璃管作为样品管，石英玻璃结构中不规则的空隙使得气体在高温下易发生扩散与渗透；由钼、钽坩埚组成的双真空炉管一般用于稀有气体同位素组成分析，较少用于气体化学组成分析，且该装置结构复杂，不易组装拆解，也易被损坏。针对以上问题，本文研制了石英玻璃与金属零件组成的双真空盛样炉管，该炉管具有体积小、易于组装、拆解和移动等特点。在相同的实验条件下与单石英玻璃管进行对照实验。根据实验结果，尤其是H2浓度的测量结果表明：不论哪种类型的样品在500℃和950℃加热脱气时，应用本文研制的双真空盛样炉管，测量的H2浓度均高于同等实验条件下应用单石英玻璃管测量的H2浓度，该双真空炉管的气密性优于单石英玻璃管，有利于获得样品中更加真实的气体化学组成。 |
| 英文摘要: |
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. |
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