摘要
海水水合物富集区的特征分析可作为深海可燃冰勘探的重要依据。为了实时分析海水溶解气体,采用离轴积分腔输出光谱技术(ICOS)对利用膜分离获得的溶解气体进行了实时检测。实验搭建了适合深海走航观测的精密光谱分析仪器,并进行了理论分析和实验验证,实验得到CH_(4)的浓度(体积比)探测范围为1.073×10^(−8)∼1×10^(−3),CO_(2)的浓度(体积比)探测范围为3.39×10^(−6)∼1×10^(−2),CH_(4)同位素丰度的测量精度为1.2‰,CO_(2)同位素丰度的测量精度为1.74‰。实验结果表明,系统具有良好的灵敏度和稳定性,可以实现深海连续走航观测。
The characteristic analysis of the seawater hydrate enrichment area can be used as an important basis for deep-sea combustible ice exploration.In order to analyze the dissolved gases in seawater in real time,the off-axis integrating cavity output spectroscopy(ICOS)is used to detect the dissolved gases obtained by membrane separation technology.A precise spectrum analysis instrument suitable for deepsea navigation observations is built,and theoretical analysis and experimental verification are carried out.The experimental results show that the detection range of CH_(4) concentration(volume ratio)is 1.073×10^(−8)−1×10^(−3),the detection range of CO_(2) concentration(volume ratio)is 3.39×10^(−6)−1×10^(−2),the measurement accuracy of CH_(4) isotope abundance is 1.2‰,and the measurement accuracy of CO_(2) isotope abundance is 1.74‰.It is shown that the system has good sensitivity and stability,and can realize continuous navigation observation in the deep sea.
作者
丁伯坤
邵李刚
王坤阳
陈家金
王贵师
刘锟
梅教旭
谈图
高晓明
DING Bokun;SHAO Ligang;WANG Kunyang;CHEN Jiajin;WANG Guishi;LIU Kun;MEI Jiaoxu;TAN Tu;GAO Xiaoming(School of Environmental Science and Optoelectronic Technology,University of Science and Technology of China,Hefei 230026,China;Centre for Basic Science,Anhui Institute of Optics and Fine Mechanics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China)
出处
《量子电子学报》
CAS
CSCD
北大核心
2022年第4期502-510,共9页
Chinese Journal of Quantum Electronics
基金
国家重点研发计划(2021YFC2800302)。
关键词
光谱学
光谱测量仪器
多参量同时测量
甲烷同位素
二氧化碳同位素
spectroscopy
spectral measuring instrument
multi-element measurement
methane isotopes
carbon dioxide isotope
