1.1 这些规程用于记录和解释4000 cm电绝缘油的红外吸收光谱 −1. 至400厘米 −1. （2.5μm至25μm）。 注1: 虽然这些实践针对比率记录或光学零双光束色散分光光度计、单光束和HATR（水平衰减全反射），但也可以使用傅立叶变换快速扫描红外分光光度计。通过计算机化的减法技术，可以使用比率法。如果这些类型的设备符合实践中描述的规范，则它们中的任何一种都可能适用 E932 . 1.2 涵盖了两种实践，一种是参考标准实践，另一种是差异实践。 1.3 这些做法主要用于快速连续性测试，通过将其光谱与之前装运的光谱进行比较，或与进行认证测试的样品进行比较，来识别供应商装运的石油。它们还可用于检测油中的某些类型的污染，并通过比较未知和已知油的光谱来识别储存或使用中的油。 本规程不适用于测定油的各种成分。 1.4 警告- 红外吸收是一种高分辨率的工具。例如，在积累足够的数据以明确确定装运到装运的变化之前，不应得出关于油质连续性的结论。 1.5 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.6 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。 1.7 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 电绝缘油的红外光谱是在一定波长范围内吸收红外能量的记录。光谱表示试样的一般化学成分。 注2: 纯化合物的红外光谱可能是该化合物最具特征的性质。然而，在油的情况下，正在检查多组分系统，其光谱是单个组分所有光谱的总和。由于成分的吸收带可能重叠，因此油的光谱没有单一化合物的光谱那么清晰。 由于这些原因，这些做法可能并非在所有情况下都适用于矿物油等复杂混合物成分的定量估计。

1.1 These practices are to be used for the recording and interpretation of infrared absorption spectra of electrical insulating oils from 4000 cm −1 to 400 cm −1 (2.5 μm to 25 μm). Note 1: While these practices are specific to ratio recording or optical null double-beam dispersive spectrophotometers, single-beam and HATR (horizontal attenuated total reflectance), Fourier-transform rapid scan infrared spectrophotometers may also be used. By computerized subtraction techniques, ratio methods can be used. Any of these types of equipment may be suitable if they comply with the specifications described in Practice E932 . 1.2 Two practices are covered, a Reference Standard Practice and a Differential Practice. 1.3 These practices are designed primarily for use as rapid continuity tests for identifying a shipment of oil from a supplier by comparing its spectrum with that obtained from previous shipments, or with the sample on which approval tests were made. They also may be used for the detection of certain types of contamination in oils, and for the identification of oils in storage or service, by comparison of the spectra of the unknown and known oils. The practices are not intended for the determination of the various constituents of an oil. 1.4 Warning— Infrared absorption is a tool of high resolving power. Conclusions as to continuity of oil quality should not be drawn until sufficient data have been accumulated so that the shipment-to-shipment variation is clearly established, for example. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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. 1.7 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 The infrared spectrum of an electrical insulating oil is a record of the absorption of infrared energy over a range of wavelengths. The spectrum indicates the general chemical composition of the test specimen. Note 2: The infrared spectrum of a pure chemical compound is probably the most characteristic property of that compound. However, in the case of oils, multicomponent systems are being examined whose spectra are the sum total of all the spectra of the individual components. Because the absorption bands of the components may overlap, the spectrum of the oil is not as sharply defined as that for a single compound. For these reasons, these practices may not in every case be suitable for the quantitative estimation of the components of such a complex mixture as mineral oil.