Universidad de Cantabria, Departamento de Ingeniería Química y Química Inorgánica, Avenida de los Castros s/n, 39005 Santander, Spain.
J Environ Manage. 2013 Nov 30;130:72-9. doi: 10.1016/j.jenvman.2013.08.048. Epub 2013 Sep 21.
Different oil products like gasoline, diesel or heavy oils can cause soil contamination. The assessment of soils exposed to oil products can be conducted through the comparison between a measured concentration and an intervention value (IV). Several national policies include the IV based on the so called total petroleum hydrocarbons (TPH) measure. However, the TPH assessment does not indicate the individual substances that may produce contamination. The soil quality assessment can be improved by including common hazardous compounds as polycyclic aromatic hydrocarbons (PAHs) and aromatic volatile hydrocarbons like benzene, toluene, ethylbenzene and xylenes (BTEX). This study, focused on 62 samples collected from different sites throughout The Netherlands, evaluates TPH, PAH and BTEX concentrations in soils. Several indices of pollution are defined for the assessment of individual variables (TPH, PAH, B, T, E, and X) and multivariables (MV, BTEX), allowing us to group the pollutants and simplify the methodology. TPH and PAH concentrations above the IV are mainly found in medium and heavy oil products such as diesel and heavy oil. On the other hand, unacceptable BTEX concentrations are reached in soils contaminated with gasoline and kerosene. The TPH assessment suggests the need for further action to include lighter products. The application of multivariable indices allows us to include these products in the soil quality assessment without changing the IV for TPH. This work provides useful information about the soil quality assessment methodology of oil products in soils, focussing the analysis into the substances that mainly cause the risk.
不同的石油产品，如汽油、柴油或重油，可能会导致土壤污染。可以通过比较测量浓度和干预值（IV）来评估暴露于石油产品的土壤。一些国家政策包括基于所谓的总石油烃（TPH）测量的 IV。然而，TPH 评估并不能表明可能造成污染的个别物质。通过包括常见的危险化合物，如多环芳烃（PAH）和芳香族挥发性烃类，如苯、甲苯、乙苯和二甲苯（BTEX），可以提高土壤质量评估。本研究集中于从荷兰各地不同地点采集的 62 个样本，评估了土壤中的 TPH、PAH 和 BTEX 浓度。定义了几个污染指数来评估个别变量（TPH、PAH、B、T、E 和 X）和多变量（MV、BTEX），允许我们对污染物进行分组并简化方法。IV 以上的 TPH 和 PAH 浓度主要存在于中油和重油产品，如柴油和重油。另一方面，在汽油和煤油污染的土壤中，达到了不可接受的 BTEX 浓度。TPH 评估表明需要进一步采取行动，包括更轻的产品。多变量指数的应用允许我们在不改变 TPH 的 IV 的情况下，将这些产品纳入土壤质量评估。这项工作提供了有关土壤中石油产品质量评估方法的有用信息，重点分析了主要造成风险的物质。
