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碳、氧稳定同位素值的研究对能源、地质等领域中有重要意义,建立国内外公认的稳定同位素标准样亦是一项非常重要的基础工作。本文介绍标准样建立情况,共分四部分:第一部分简单介绍磷酸法和燃烧法制备二氧化碳的方法;第二部分介绍双进样装置三杯接收器MAT-250质谱计测定二氧化碳中δC~(13)和δO~(18)的计算方法,第三部分介绍标准样组分的测定计算结果;第四部分介绍用标准样分析白云岩等碳酸盐矿物时的计算方法。
Carbon and oxygen stable isotope values of the energy, geology and other fields of great significance, the establishment of recognized standards of stable isotope at home and abroad is also a very important basic work. This paper introduces the establishment of standards, is divided into four parts: the first part of a brief introduction of phosphoric acid and combustion method for the preparation of carbon dioxide; the second part describes the dual-injection device three cup receiver MAT-250 mass spectrometry carbon dioxide in the δC ~ (13 ) And δO ~ (18). The third part introduces the calculation results of the standard samples. The fourth part introduces the calculation method of the carbonate minerals such as dolomite when using standard samples.