文章基本信息

标题：Dilution-Extrapolation Hydrometer Method for Easy Determination of API Gravity of Heavily Weathered Hydrocarbons in Petroleum Contaminated Soil
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作者：Carlos M. Morales-Bautista ; Randy H. Adams ; Francisco Guzmán-Osorio 等
期刊名称：Energy and Environment Research
印刷版ISSN：1927-0569
电子版ISSN：1927-0577
出版年度：2013
卷号：3
期号：1
页码：115
DOI：10.5539/eer.v3n1p115
出版社：Canadian Center of Science and Education
摘要：When crude petroleum is spilled onto soil, the oil’s properties have a large influence on the toxicity to soil organisms, the biodegradability of the oil, and potential for long term fertility problems in the soil. Furthermore, these properties of environmental concern are related to the crude’s density, commonly measured as API gravity. Currently, methods do not exist to determine the ºAPI of crude oil in contaminated soil. In this study a novel method is presented for the determination of API gravity in small volumes (< 10 ml) of heavy and extra-heavy petroleum from contaminated soil. Is uses an economical and readily available solvent (diesel + automotive lubricating oil) in a procedure based on the conventional hydrometer method, plus dilution-extrapolation techniques. It was validated with crude petroleum in the 27.1-15.0 ºAPI range, obtaining an excellent correlation with the conventional method (R = 0.996) and an error of less than 0.4% based on specific gravity. Potential applications of this method are discussed for petroleum contaminated soil.