ISO 17183:2016规定了筛选高度污染土壤的程序，以检测可用异丙醇萃取的有机化合物，包括各种燃料、油和油脂。这种方法对寻找热点很有用。它既适用于实验室，也适用于现场筛选。以吸光度单位表示，工作范围约为0.01至0.3，相当于土壤中约500 mg/kg至10000 mg/kg的异丙醇可萃取有机化合物。 本方法中光散射/吸收法产生的光衰减旨在通过校准快速筛选土壤样品，使用给定场地上可能存在的最合适物质来指示浓度水平。 这种筛选技术适用于广泛的有机化合物，主要是碳氢化合物。有机化合物是一种定义非常广泛的化合物混合物，它在混合物样品中显示了自己的特定乳化指数（见附录a）和总乳化指数，主要由其在水中的不溶性来定义。化合物（例如非极性化合物）的不溶性越强，响应越高。碳氢化合物通常反应性较低，极性较小。 乳化指数的测定利用其非极性来检测有机化合物，包括从约C8到约C36的多种碳氢化合物。 注:该方法也适用于植物油等生物物质。 本方法不适用于测定可能是较大有机化合物混合物一部分的特定有机化合物或化合物组。与其他筛查技术一样，建议确认一定百分比的阳性和阴性检测结果，尤其是当接近或高于监管行动限值时，或当存在背景或怀疑存在干扰性有机化合物（如表面活性物质）时。 该方法不涉及取样、制备和检测期间任何挥发性有机化合物混合物（即汽油）的蒸发。尽管筛选方法可用于挥发性碳氢化合物的定量检测，但不打算将该方法用于挥发性石油碳氢化合物的定量测定，除非解决了样品处理过程中的蒸发问题；应适当校正响应系数，或在实际样品上证明方法性能。 如果存在乳化剂或表面活性物质（例如洗涤剂），则可能会得到明显的负偏或假阴性结果。如果有任何证据表明土壤中存在表面活性剂，则不能采用该方法。

ISO 17183:2016 specifies the procedure to screen highly contaminated soils to detect organic compounds extractable with isopropanol, including a wide range of fuels, oils, and greases. The method is useful for finding hot spots. It is applicable both in laboratories and for site screening in the field. The working range is approximately 0,01 to 0,3 in absorbance units, corresponding to approximately 500 mg/kg to 10 000 mg/kg of isopropanol-extractable organic compounds in soil. The light attenuation due to light scattering/absorption approach in this method is designed to quickly screen soil samples using calibration with the most appropriate substance(s) likely to be present on a given site to indicate the concentration levels. This screening technique is applicable for a broad spectrum of organic compounds, mainly hydrocarbons. Organic compounds are a very broadly defined mixture of compounds, which show their own specific emulsification indices (see Annex A) and a gross emulsification index in a mixture sample, defined primarily by their insolubility in water. The more insoluble the compounds (e.g. non-polar compounds), the higher the response. Hydrocarbons are generally less-reactive and have little polarity. Determination of emulsification indexes uses their non-polar nature to detect organic compounds including a wide range of hydrocarbons from about C8 to about C36. NOTE This method can also be applied to biological substances such as vegetable oils. This method is not applicable for determination of specific organic compounds or groups of compounds that may be part of a larger organic compound mixture. As with other screening techniques, it is advisable to confirm a certain percentage of both positive and negative test results, especially when near or above a regulatory action limit or when the presence of background or when interfering organic compounds such as surface active substances are suspected to be present. This method does not address the evaporation of any volatile organic compound mixtures (i.e., gasoline) during sampling, preparation and detection. Although the screening method can be used for the quantitative detection of volatile hydrocarbons, it is not intended that the method be used for the quantitative determination of volatile petroleum hydrocarbons unless evaporation during sample handling is addressed; the response factor be appropriately corrected, or the method performance be demonstrated on real samples. If emulsifiers or surface active substances (e.g. detergents) are present, significantly negatively-biased or false negative results can be obtained. If there is any evidence for the presence of surfactances in the soil, this method cannot be applied.