Quantitative test for oils, crude oil, hydrocarbon, or other con

Details Quantitative test for oils, crude oil, hydrocarbon, or other con Quantitative test for oils, crude oil, hydrocarbon, or other con

1995-01-09

1997-10-21

Pyon, Harold

Chemistry: analytical and immunological testing

Geochemical, geological, or geothermal exploration

For petroleum oils or carbonaceous minerals

436 25, 436 27, 436 30, 436 40, 436139, 422 681, G01N 3324

Patent

active

056795742

ABSTRACT:
A method for the quantitative determination of oil in a soil matrix is provided, in which the method involves: extracting a soil sample with a solvent in the presence of a drying agent to provide an extract containing oil, if present in the soil sample, wherein the solvent is capable of complete solvation of oil and is completely miscible with water; filtering the extract; combining the filtered extract with water in the presence of an emulsifier to form an assay sample; and determining the amount of oil in the soil sample by measuring the turbidity of the assay sample to provide a turbidimetric response for the assay sample which correlates to concentration of oil present in the assay sample and comparing the turbidimetric response to a standard curve prepared from performing the methods on soil samples of known oil content. A kit for performing the method is also provided.

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Zhang et al, A method for detn. of crude petroleum oil in soil using tetrahydrofuran-turbidimetric method, 1988, Huanjing Kexue Journal, Abstract, 9(4), 57-8,52.

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