| 惰气熔融-红外光谱法测定7LiF中的氧含量 |
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| 引用本文： | 宗国强,王荣荣,崔振华,陆人杰,安华英,张婷,肖吉昌.惰气熔融-红外光谱法测定7LiF中的氧含量[J].中国无机分析化学,2021,11(6):103-106. |
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| 作者姓名： | 宗国强 王荣荣 崔振华 陆人杰 安华英 张婷 肖吉昌 |
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| 作者单位： | 中国科学院上海有机化学研究所,中国科学院上海有机化学研究所,中国科学院上海有机化学研究所,中国科学院上海有机化学研究所,中国科学院上海有机化学研究所,中国科学院上海有机化学研究所,中国科学院上海有机化学研究所 |
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| 基金项目： | 中国科学院重大资助项目 |
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| 摘 要： | 7LiF是制备熔盐堆冷却剂7LiF-BeF2熔盐的基础原材料，其杂质含量的多少与熔盐纯度及应用性能直接相关。采用惰气熔融-红外吸收法，建立了熔盐堆用7LiF中杂质氧含量测定的新方法。考察了不同助熔剂和加热功率等条件对7LiF中氧含量的影响，找到了较好的 7LiF中氧含量测定方法。在分析功率为2200W，用银舟做助熔剂，称样量为0.1 g的条件下对7LiF试样进行了测定，氧的相对标准偏差为2.9%；加标回收率为103-110%。结果表明，本测定方法易操作，速度快，能满足7LiF生产过程中的质量控制要求，为第四代先进核能反应堆用7LiF规模化制备提供了有力的技术支持。
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| 关 键 词： | 惰气熔融-红外光谱法 7LiF 氧含量 分析 |
| 收稿时间： | 2021/4/19 0:00:00 |
| 修稿时间： | 2021/4/27 0:00:00 |
Determination of oxygen content in 7LiF by inert gas fusing - infrared spectroscopy |
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| Zong Guo-Qiang,WANG Rong-Rong,CUI Zhen-Hu,LU Ren-Jie,AN Hua-Ying,ZHANG Ting and XIAO Ji-Chang.Determination of oxygen content in 7LiF by inert gas fusing - infrared spectroscopy[J].Chinese Journal of Inorganic Analytical Chemistry,2021,11(6):103-106. |
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| Authors: | Zong Guo-Qiang WANG Rong-Rong CUI Zhen-Hu LU Ren-Jie AN Hua-Ying ZHANG Ting and XIAO Ji-Chang |
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| Institution: | Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences,Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences,Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences,Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences,Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences,Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences,Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences |
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| Abstract: | 7LiF is the basic raw material for preparing molten salt coolant 7LiF-BeF2, and its impurity content is directly related to the purity and application performance of molten salt. A new method for the determination of impurity oxygen content in 7LiF for molten salt reactor was developed by inert gas fusing - infrared absorption method. The effects of different fluxes and heating power on oxygen content in 7LiF were investigated, and a better method for the determination of oxygen content in 7LiF was found. The relative standard deviation of oxygen is 2.9% and the recoveries are 103-110%, under the condition of 2200W analytical power, silver boat as flux and 0.1 g sample weight. The results show that the method is easy to operate and fast, and can meet the quality control requirements in the production process of 7LIF, which provides a strong technical support for the large-scale preparation of 7LiF for the fourth generation of advanced nuclear power reactors. |
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| Keywords: | Inert gas fusion-infrared spectroscopy 7LiF Oxygen content Analysis |
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