氧同位素非质量分馏在CO_(2)相关研究中的进展  

Progress on mass independent fractionation of oxygen isotope in CO_(2) related researches

作　　者：曹佳璐 牛振川[1,4,5] 梁单 冯雪 吕梦妮 王国卫 刘婉玉 CAO Jialu;NIU Zhenchuan;LIANG Dan;FENG Xue;LÜMengni;WANG Guowei;LIU Wanyu(State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710061,China;Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application,Xi’an Accelerator Mass Spectrometry Center,Xi’an 710061,China;Xi’an Institute for Innovative Earth Environment Research,Xi’an 710061,China;University of Chinese Academy of Sciences,Beijing 100049,China;National Observation and Research Station of Regional Ecological Environment Change and Comprehensive Management in the Guanzhong Plain,Shaanxi,Xi’an 710061,China;Interdisciplinary Research Center of Earth Science Frontier,Beijing Normal University,Beijing 100875,China)

机构地区：[1]中国科学院地球环境研究所,黄土与第四纪地质国家重点实验室,西安710061 [2]陕西省加速器质谱技术与应用重点实验室,西安加速器质谱中心,西安710061 [3]西安地球环境创新研究院,西安710061 [4]中国科学院大学,北京100049 [5]陕西关中平原区域生态环境变化与综合治理国家野外科学观测研究站,西安710061 [6]北京师范大学地球科学前沿交叉研究中心,北京100875

出　　处：《地球环境学报》2023年第6期714-724,共11页Journal of Earth Environment

基　　金：国家自然科学基金项目(42173082);中国科学院战略性先导科技专项(XDA23010302)。

摘　　要：氧同位素异常(Δ^(17)O)常用来衡量氧同位素非质量分馏的程度,也是目前研究大气CO_(2)相关问题的有力手段之一。本文综述大气CO_(2)氧同位素非质量分馏效应的研究进展。首先介绍氧同位素非质量分馏程度的表示方法(Δ^(17)O)和成因;其次概括CO_(2)中Δ^(17)O的测量方法,并对比质谱法和光谱法测量Δ^(17)O的优缺点;最后总结Δ^(17)O在估算平流层向对流层输入的CO_(2)通量、估算全球生产力和示踪CO_(2)不同来源方面的应用,并对Δ^(17)O在CO_(2)未来的研究方向提出展望。Background,aim,and scope As an important component in atmosphere and the main greenhouse gas,CO_(2) has always been a research focus in the field of atmosphere.The concentration of CO_(2) in the atmosphere has significantly increased in recent decades and still shows an upward trend.In order to control carbon emission and achieve the goals of“carbon peak”and“carbon neutrality”as soon as possible,we must clearly understand the sources of atmospheric CO_(2) and the global carbon cycle processes.Recently,the development of oxygen isotope anomaly(Δ^(17)O)provides a new tracer for studying CO_(2) related issues,and nowΔ^(17)O is becoming a more and more important tracer.Materials and methods This article provides a review of the research progress on oxygen isotope mass independent fractionation in atmospheric CO_(2).Firstly,a brief introduction is given to the definition and origin of oxygen isotope mass independent fractionation.Secondly,this article summarizes the measurement methods ofΔ^(17)O and compares the advantages and disadvantages between mass spectrometry and spectroscopy for measuring isotopes.Finally,this article summarizes the application ofΔ^(17)O in estimating the input of CO_(2) flux from stratosphere to troposphere and global productivity,as well as tracing CO_(2) different sources,and proposes prospects for future research directions ofΔ^(17)O in CO_(2).Results TheΔ^(17)O produced by the photochemical reaction of stratospheric ozone has become a powerful tool for studying CO_(2) related issues.As a tracer,it has been applied to estimate the input of CO_(2) from the stratosphere to the troposphere and global productivity,as well as tracing different sources of CO_(2).Discussion(1)Δ^(17)O is generated by photochemical reactions of ozone in the stratosphere.At present,both mass spectrometry and spectroscopy can be used to measureΔ^(17)O,with a precision of 0.01‰.(2)The oxygen isotope mass independent fractionation in stratospheric CO_(2) transports from stratosphere to troposphere thr

关 键 词：CO_(2) 氧同位素非质量分馏 Δ^(17)O 光谱法 示踪研究 

分 类 号：P593[天文地球—地球化学]