ISO 6974-6:2002 天然气 气体光谱不稳定性成分测定-第6部分：使用3种毛细管测定氢,氦,氧,氮,二氧化碳和C1至C8碳氢化合物
标准编号：ISO 6974-6:2002
中文名称：天然气 气体光谱不稳定性成分测定-第6部分：使用3种毛细管测定氢,氦,氧,氮,二氧化碳和C1至C8碳氢化合物
英文名称：Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using
发布日期：2002-10
标准范围
ISO 6974-6:20 02描述了使用三根毛细管柱定量测定天然气样品中氦、氢、氧、氮、二氧化碳和C1-C8烃含量的气相色谱方法。该方法适用于测定摩尔分数范围为0.001%至40%的这些气体，具体取决于所分析的成分，并且通常用于实验室应用。但仅适用于摩尔分数在40%~100%范围内的甲烷。这些范围不代表检测限，而是所述方法精密度适用的限度。尽管样品中的一种或多种组分可能不以可检测水平存在，但该方法仍可适用。ISO 6974-6:2002仅在与ISO 6974-1:20 00和ISO 6974-2:20 01结合使用时才适用。该方法也可适用于天然气替代品的分析。在相关情况下，还提供了关于该方法在测定天然气替代品中的适用性的附加信息。
ISO 6974-6:2002 describes a gas chromatographic method for the quantitative determination of the content of helium, hydrogen, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons in natural gas samples using three capillary columns. This method is applicable to the determination of these gases within the mole fraction ranges varying from 0,000 1 % to 40 %, depending on the component analysed, and is commonly used for laboratory applications. However, it is only applicable to methane within the mole fraction range of 40 % to 100 %. These ranges do not represent the limits of detection, but the limits within which the stated precision of the method applies. Although one or more components in a sample may not be present at detectable levels, the method can still be applicable.ISO 6974-6:2002 is only applicable if used in conjunction with ISO 6974-1:2000 and ISO 6974-2:2001.This method can also be applicable to the analysis of natural gas substitutes. Additional information on the applicability of this method to the determination of natural gas substitutes is also given where relevant.
标准预览图
