Study on the Extraction of Petroleum Hydrocarbons from Soil by Fat Analyzer
Soils and Sediments Determination of Petroleum Hydrocarbons(C10-C40)in Soils and Sediments by Gas Chromatography(HJ1021-2019)The volume of solvent extracted by Soxhlet extraction method is 100 mL,and the extraction time is 16～18 h.In this paper,a fat analyzer was used to explore the feasibility of extracting petroleum hydrocarbons(C10-C40)under the condition of shortening the extraction time and reducing the volume of extraction solvent.The results showed that when the extraction time was 2 h,3 h,4 h,and the extraction solvent volume was 50 mL,65 mL,and 80 mL,the recovery rate of blank added standard sample met the requirements of 70%～120%in the method,and the recovery rate of sample added standard sample met the requirements of 50%～140%in the method.The determination results of standard samples are within the uncertainty range.The results of this study can provide a reference for the extraction of petroleum hydrocarbons(C10-C40)in soil by fat analyzer.
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