1.1 本试验方法包括通过直接注入多维气相色谱法在15%的浓度范围内测定原油中的甲醇 ppm（m/m）至900 ppm（m/m）。联合定量限（PLOQ）为15 ppm（m/m）。 1.2 本试验方法仅适用于含量小于或等于0.1的原油 % （v/v）水。 1.3 本试验方法未在环境温度下使用固体或蜡状或两者兼有的原油样品进行试验。 1.4 以国际单位制表示的数值应视为标准值。还提供了常用的替代装置，以提高清晰度，并帮助用户使用本试验方法。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 甲醇用于原油生产，以防止形成天然气水合物。原油中残留甲醇的存在可能会导致炼油厂运营中成本高昂的问题。

1.1 This test method covers the determination of methanol in crude oils by direct injection multidimensional gas chromatography in the concentration range of 15 ppm (m/m) to 900 ppm (m/m). The pooled limit of quantification (PLOQ) is 15 ppm (m/m). 1.2 This test method is applicable only to crude oils containing less than or equal to 0.1 % (v/v) water. 1.3 This test method has not been tested with crude oil samples that are solid or waxy, or both, at ambient temperatures. 1.4 The values stated in SI units are to be regarded as standard. Alternate units, in common usage, are also provided to increase clarity and aid the users of this test method. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Methanol is used in production of crude oil to prevent formation of gas hydrates. The presence of residual methanol in crude oils can lead to costly problems in refinery operations.