1.1 本试验方法涵盖了总油和油脂（TOG）的测定，总油和油脂可以通过环己烷从水或废水样品中提取，并通过非分散红外光谱从1370厘米处测量 -1 至1380 cm -1 用Florisil处理提取物 在IR测量之前除去极性物质能够测定总石油(TPH)。 1.2 该方法还考虑了石油烃的挥发性部分，其通过重量法损失，重量法要求在称重之前蒸发溶剂，以及无溶剂IR法损失，无溶剂IR法要求在测量之前干燥所用的固相材料。类似地，与使用时间窗进行定量的GC方法相比，通过该方法可获得更完整的提取石油烃级分，因为在这些窗口外洗脱的石油烃也被定量。1.3 该方法将水中总油和油脂定义为可用环己烷萃取并在1370 cm区域通过红外吸收测量的物质 -1 至1380 cm -1 （7.25µm至7.3µm）。类似地，水中的总石油烃定义为可以用环己烷萃取的物质，在用Florisil过滤后保留在萃取物中，并通过1370cm区域的IR吸收来测量 -1 至1380 cm -1 （7.25µm至7.3µm）。总油脂浓度定义为总油和油脂与总石油烃浓度之间的差值。 1.4 该方法的总油和油脂以及总石油烃的含量范围为0.5 mg/L至1000 mg/L，方法检测限（MDL）为0.5 mg/L。通过调节液体中使用的水或溶剂体积，可以将范围和方法检测限扩展到更高或更低的浓度。液体萃取。 1.5 以SI单位表示的值将被视为标准值。本标准不包括其他计量单位。 1.6 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。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法规限制的适用性。 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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 5.1 生活和工业废水中总石油烃以及总油和油脂的存在和浓度是公众关注的问题，因为它对美学有害，对水生生物有影响。 5.2 已经制定了法规和标准，要求监测水和废水中的总石油烃以及总油和油脂。

1.1 This test method covers the determination of total oil and grease (TOG) that can be extracted from water or wastewater samples by cyclohexane and measured by non-dispersive IR spectroscopy from 1370 cm -1 to 1380 cm -1 . Treating the extract with Florisil to remove polar substances prior to the IR measurement enables determination of the total petroleum (TPH). 1.2 This 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 solventless IR methods that require drying of the employed solid phase material prior to measurement. Similarly, a more complete fraction of extracted petroleum hydrocarbon is accessible by this method as compared to GC methods that use a time window for quantification, as petroleum hydrocarbons eluting outside these windows are also quantified. 1.3 This method defines total oil and grease in water as material that can be extracted with cyclohexane and measured by IR absorption in the region of 1370 cm -1 to 1380 cm -1 (7.25 µm to 7.3 µm). Similarly, total petroleum hydrocarbon in water is defined as material that can be extracted with cyclohexane, remains in the extract after filtration over Florisil and is measured by IR absorption in the region of 1370 cm -1 to 1380 cm -1 (7.25 µm to 7.3 µm). The concentration of total grease is defined as the difference between the total oil and grease and total petroleum hydrocarbon concentrations. 1.4 This method covers the range of 0.5 mg/L to 1000 mg/L for total oil and grease as well as for total petroleum hydrocarbons and has a method detection limit (MDL) of 0.5 mg/L. The range and method detection limit may be extended to higher or lower concentrations by adjusting the water or solvent volume used in the liquid-liquid extraction. 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 presence and concentration of total petroleum hydrocarbons, as well as total oil and grease, 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 petroleum hydrocarbons as well as total oil and grease in water and wastewater.