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首页> 外文期刊>Applied and environmental soil science >Quantitative Analysis of Total Petroleum Hydrocarbons in Soils: Comparison between Reflectance Spectroscopy and Solvent Extraction by 3 Certified Laboratories
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Quantitative Analysis of Total Petroleum Hydrocarbons in Soils: Comparison between Reflectance Spectroscopy and Solvent Extraction by 3 Certified Laboratories

机译：土壤中总石油烃的定量分析：3个认证实验室在反射光谱法和溶剂萃取之间的比较

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The commonly used analytic method for assessing total petroleum hydrocarbons (TPH) in soil, EPA method 418.1, is usually based on extraction with 1,1,2-trichlorotrifluoroethane (Freon 113) and FTIR spectroscopy of the extracted solvent. This method is widely used for initial site investigation, due to the relative low price per sample. It is known that the extraction efficiency varies depending on the extracting solvent and other sample properties. This study’s main goal was to evaluate reflectance spectroscopy as a tool for TPH assessment, as compared with three commercial certified laboratories using traditional methods. Large variations were found between the results of the three commercial laboratories, both internally (average deviation up to 20%), and between laboratories (average deviation up to 103%). Reflectance spectroscopy method was found be as good as the commercial laboratories in terms of accuracy and could be a viable field-screening tool that is rapid, environmental friendly, and cost effective.
机译：评估土壤中总石油烃（TPH）的常用分析方法，EPA方法418.1，通常基于1,1,2-三氯三氟乙烷（Freon 113）的萃取和所萃取溶剂的FTIR光谱。由于每个样品的价格相对较低，该方法被广泛用于初始现场调查。已知提取效率根据提取溶剂和其他样品性质而变化。这项研究的主要目的是与使用传统方法的三个获得商业认证的实验室相比，将反射光谱作为一种TPH评估工具进行评估。在三个商业实验室的结果之间发现很大的差异，既在内部（平均偏差最大为20％），又在两个实验室之间（平均偏差最大为103％）。发现反射光谱法在准确性方面与商业实验室一样好，并且可以是快速，环保和成本有效的可行的现场筛选工具。

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