CPC G01N 21/31 (2013.01) [G01N 1/34 (2013.01); G01N 1/38 (2013.01); G01N 1/4077 (2013.01); G01N 33/1833 (2013.01); G01N 2001/4083 (2013.01)] | 13 Claims |
1. A method for determining a concentration of oil in a water sample, the method comprising:
adding a specified amount of cyclohexane to the water sample to form a mixture, wherein a volumetric ratio of the specified amount of cyclohexane to the water sample is in a range of from about 1:10 to about 1:1;
stirring the mixture;
extracting an oil phase from the mixture;
measuring an absorbance value of the extracted oil phase at a specified wavelength in the visible light spectrum, wherein the specified wavelength is in a range of from 390 nanometers (nm) to 600 nm; and
determining the concentration of oil in the water sample based on the measured absorbance value of the extracted oil phase.
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