ISO/TS 16558-2:2015规定了通过气相色谱法定量测定现场潮湿土壤样品中石油烃总可萃取半挥发性、脂肪族和芳香族组分含量的方法。 试验结果可用于与石油碳氢化合物污染相关的风险评估研究。 ISO/TS 16558-2:2015提供了一种适用于约100 mg/kg土壤中石油烃含量的方法，表示为整个脂肪族组分C10至C40以及芳香族组分C10至C40的干物质。对于亚组分，可达到测定下限。 如果需要较低的检测限，可以使用大容量注射或浓缩最终提取物。 注1:在天然未受污染的富含有机物的土壤（如泥炭土）中，可以发现低浓度的脂肪族和芳香族化合物。

ISO/TS 16558-2:2015 specifies a method for the quantitative determination of the total extractable semi-volatile, aliphatic, and aromatic fractions of petroleum hydrocarbon content in field moist soil samples by gas chromatography. The results of the test carried out can be used for risk assessment studies related to contaminations with petroleum hydrocarbons. ISO/TS 16558-2:2015 provides a method applicable to petroleum hydrocarbon contents from about 100 mg/kg soil expressed as dry matter for the whole aliphatic fraction C10 to C40, as well as the aromatic fraction C10 to C40. For sub-fractions, lower limits of determination can be reached. If lower detection limits are required, large volume injection can be used or concentration of the final extract can be carried out. NOTE 1 Low concentrations of aliphatic and aromatic compounds can be found in natural uncontaminated organic rich soils like peat soils.