氖中微量组分气相色谱测量分析方法与验证  

Measurement and Verification of Trace Components in Neon by Gas Chromatography

作　　者：杨丽玲[1] 占勤[1] 杨洪广[1] YANG Li-ling;ZHAN Qin;YANG Hong-guang(China Institute of Atomic Energy,P.O.Box 275(55),Beijing 102413,China)

机构地区：[1]中国原子能科学研究院反应堆工程技术研究所,北京102413

出　　处：《核化学与放射化学》2022年第2期221-227,共7页Journal of Nuclear and Radiochemistry

基　　金：国家ITER计划(国内配套研究)资助项目(2014GB111003)。

摘　　要：为测量聚变堆固态氚增殖剂堆内辐照氚增殖剂的产氚速率,除用常规电离室之外,本研究建立了Ne载气的高精度气相色谱在线检测分析方法,通过测量产氚回路中的氦产生量,验证系统中产生的氚量,从而为聚变堆固态包层产氚包层增殖剂材料辐照产氚性能提供一种新的产氚速率测量验证方法。本工作通过研制含有三个检测器、五个色谱柱的气相色谱分析系统,建立了Ne中微量^(4)He、H_(2)及杂质组分的色谱检测分析方法,并完成了实时在线检测的验证实验。结果表明,研发的色谱分析系统可实现高纯Ne中^(4)He、H_(2)及杂质组分的检测分析,H_(2)、^(4)He检测限可分别达到1.0×10^(-6)、5.9×10^(-6),各组分含量及峰面积的相对标准偏差(s_(r))均小于5.0%(n=6),线性相关系数(r^(2))均大于0.99,说明检测方法重复性好。根据Ne中多组分气体的在线检测验证实验可知,单时段和多时段内的测量重复性均较好,可为辐照产氚考核系统中的产氚速率验证提供分析手段,进而为正式入堆得到辐照数据和氚衡算提供技术支持。In order to complete the tritium production of irradiated tritium breeder in the solid tritium breeder reactor of fusion reactor,in addition to the conventional ionization chamber,a high-precision gas chromatography on-line detection and analysis method of neon carrier gas was established in this work.The tritium production in the system was verified by measuring the helium production in the tritium production circuit.Thus,a new tritium production rate measurement and verification method was provided for the irradiation tritium production performance of tritium producing cladding solid breeder materials in fusion reactor.It’s necessary to establish the method of analyzing trace^(4)He,H_(2)and impurity components in Ne,in order to complete the test of real-time online detection of the system,developing three detectors and five chromatographic columns.The results show that the developed chromatographic analysis system can realize the detection and analysis of^(4)He,H_(2)and impurity components in high-purity Ne,the detection limits of H_(2)and^(4)He can reach 1.0×10^(-6) and 5.9×10^(-6) respectively,the relative standard deviation(s_(r))of each component content and peak area are less than 5.0%(n=6),and the linear correlation coefficient r^(2) is greater than 0.99,indicating that the detection method has good repeatability.According to the on-line test of multicomponent gas in Ne,the measurement repeatability in single period and multi period is good,which can provide an analytical means for the verification of tritium production rate in the irradiation tritium production assessment system,and then provide technical support for the formal entry into the reactor to obtain irradiation data and tritium balance.

关 键 词：聚变堆 产氚速率 气相色谱 氦分析 

分 类 号：TL99[核科学技术—核技术及应用]