基于离轴积分腔的海水溶解气体实时检测技术研究

doi:10.3969/j.issn.1007-5461.2022.04.004

量子电子学报 ›› 2022, Vol. 39 ›› Issue (4): 502-510.doi: 10.3969/j.issn.1007-5461.2022.04.004

基于离轴积分腔的海水溶解气体实时检测技术研究

丁伯坤1,2, 邵李刚2, 王坤阳2, 陈家金2, 王贵师2, 刘锟2, 梅教旭2, 谈图2, 高晓明1,2∗

(1 中国科学技术大学环境科学与光电技术学院, 安徽合肥230026; 2 中国科学院合肥物质科学研究院安徽光学精密机械研究所基础科学研究中心, 安徽合肥230031)

收稿日期:2020-12-22 修回日期:2021-01-11 出版日期:2022-07-28 发布日期:2022-07-28
通讯作者: E-mail: xmgao@aiofm.ac.cn E-mail:E-mail: xmgao@aiofm.ac.cn
作者简介:丁伯坤( 1996 - ), 安徽安庆人, 研究生, 主要从事光谱测量仪器方面的研究。E-mail: dbk1996@mail.ustc.edu.cn
基金资助:
Supported by National Key Research and Development Programe of China (国家重点研发计划, 2021YFC2800302)

Research on real-time detection technology of dissolved gas in seawater based on off-axis integrating cavity

DING Bokun1,2, SHAO Ligang2, WANG Kunyang2, CHEN Jiajin2, WANG Guishi2, LIU Kun2, MEI Jiaoxu2, TAN Tu2, GAO Xiaoming1,2∗

( 1 School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China; 2 Centre for Basic Science, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China )

Received:2020-12-22 Revised:2021-01-11 Published:2022-07-28 Online:2022-07-28

摘要/Abstract

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CH4 的浓度(体积比) 探测范围为 1.073 × 10−8 ∼ 1 × 10−3, CO2 的浓度(体积比) 探测范围为3.39 × 10−6 ∼ 1 × 10−2, CH4 同位素丰度的测量精度为 1.2‰, CO2 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。

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

Abstract: 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 CH4 concentration (volume ratio) is 1.073 × 10−8 − 1 × 10−3, the detection range of CO2 concentration (volume ratio) is 3.39 × 10−6 − 1 × 10−2, the measurement accuracy of CH4 isotope abundance is 1.2‰, and the measurement accuracy of CO2 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.

Key words: spectroscopy, spectral measuring instrument, multi-element measurement, methane isotopes; carbon dioxide isotope

中图分类号:

O433.1

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, ∗. 基于离轴积分腔的海水溶解气体实时检测技术研究[J]. 量子电子学报, 2022, 39(4): 502-510.

DING Bokun, SHAO Ligang, WANG Kunyang, CHEN Jiajin, WANG Guishi, LIU Kun, MEI Jiaoxu, TAN Tu, GAO Xiaoming, ∗. Research on real-time detection technology of dissolved gas in seawater based on off-axis integrating cavity[J]. Chinese Journal of Quantum Electronics, 2022, 39(4): 502-510.

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基于离轴积分腔的海水溶解气体实时检测技术研究

Research on real-time detection technology of dissolved gas in seawater based on off-axis integrating cavity

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