光腔衰荡光谱(CRDS)技术VIP专享

中国地质大学（武汉） 材化学院 课程名称：文件检索 班级：031111 姓名：刘欢 学号：20111000544 题目(4)：光腔衰荡光谱(CRDS)技术 1.Comparison of water isotope-ratio determinations using two cavity ring-down instruments and classical mass spectrometry in continuous ice-core analysis 作者：Olivia J. Maselli , Diedrich Fritzsche , Lawrence Layman , Joseph R. McConnell , Hanno Meyer 作者单位：Desert Research Institute;;Alfred-Wegener Institute for Polar and Marine Research 刊名：Isotopes in Environmental and Health Studies, 2013, Vol.49 (3), pp.387-398 来源数据库：Taylor & Francis 期刊 DOI：10.1080/10256016.2013.781598 关键词：cavity ring-down ; hydrogen-2 ; ice-core ; isotope measurements ; methods and equipment ; oxygen-18 ; paleoclimatology ; water ; 原始语种摘要：We present a detailed comparison between subsequent versions of commercially available wavelength-scanned cavity ring-down water isotope analysers (L2120-i and L2130-i, Picarro Inc.). The analysers are used in parallel in a continuous mode by adaption of a low-volume flash evaporation module. Application of the analysers to ice-core analysis is assessed by comparison between continuous water isotope measurements of a glacial ice-core from Severnaya Zemlya with discrete isotope-ratio mass spectrometry measurements performed on parallel samples from the same ice-core. The great advances between instrument versions, particularly in the measurement of δ2H, allow the continuous technique to achieve the same high level of accuracy and precision obtained using traditional isotope spectrometry techniques in a fraction of the experiment time. However, when applied to continuous ice-core measurements, increased integration times result in a compromise of the achievable depth resolution of the ice-core...