1.1 本试验方法包括测定水和废水中的总油和油脂（TOG）和总石油烃（TPH），这些油和油脂可通过本试验方法从含有环状脂族烃（例如环己烷、环戊烷）的酸化样品中提取，并通过1370 cm区域的红外吸收进行测量 –1 至1380厘米 –1 μm）。极性物质通过Florisil清洁去除。 2. 1.2 本试验方法还考虑了石油烃的挥发分，这些挥发分通过重量法（称重前需要溶剂蒸发）以及无溶剂IR法（测量前需要干燥所用固相材料）损失。类似地，与使用时间窗进行定量的GC方法相比，该试验方法可获得更完整的提取石油烃馏分，因为在这些时间窗之外洗脱的石油烃也可进行定量。 1.3 本试验方法涵盖0.1 mg/L至1000 mg/L的范围，可通过提取更大或更小的单独收集的样品体积将其扩展至更低或更高的水平。 1.4 以SI单位表示的值应视为标准值。本标准不包括其他计量单位。 1.5 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、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 生活和工业废水中总油和油脂以及总石油烃的存在和浓度是公众关注的问题，因为其有害的美学效果及其对水生生物的影响。 5.2 已制定法规和标准，要求监测水和废水中的总油和油脂以及总石油烃。

1.1 This test method covers the determination of total oil and grease (TOG) and total petroleum hydrocarbons (TPH) in water and waste water that are extractable by this test method from an acidified sample with a cyclic aliphatic hydrocarbon (for example cyclohexane, cyclopentane) and measured by IR absorption in the region from 1370 cm –1 to 1380 cm –1 (7.25 μm to 7.30 μm) using a mid-IR laser spectrometer. Polar substances are removed by clean-up with Florisil. 2 1.2 This test method also considers the volatile fraction of petroleum hydrocarbons, which is lost by gravimetric methods that require solvent evaporation prior to weighing, as well as by solvent-less IR methods that require drying of the employed solid phase material prior to measurement. Similarly, a more complete fraction of extracted petroleum hydrocarbons are accessible by this test method as compared to GC methods that use a time window for quantification, as petroleum hydrocarbons eluting outside these windows are quantified too. 1.3 This test method covers the range of 0.1 mg/L to 1000 mg/L and may be extended to a lower or higher level by extraction of a larger or smaller sample volume collected separately. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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 The presence and concentration of total oil and grease as well as total petroleum hydrocoarbons, in domestic and industrial wastewater is of concern to the public because of its deleterious aesthetic effect and its impact on aquatic life. 5.2 Regulations and standards have been established that require monitoring of total oil and grease as well as total petroleum hydrocarbons in water and wastewater.