| abstract |
The present invention relates to a method (100) for the determination of trace amounts of crude oil with water, the steps of collecting (102) a sample of a fluid containing oil, adding (104) an extraction amount comprising toluene to the sample, perturbing perturbing (106) By sample, dissolving (108) the full amount of extract comprising toluene to create a mixed sample; extracting (110) the mixed sample to create an oil layer in toluene and an aqueous fluid layer, removing (114) part of the oil layer in toluene into a dilution container, removing (116) part of the oil layer in toluene using a volume of the toluene dilution product to create Dilution sample: Measure (118) the absorption value of the dilution sample using a spectrophotometer, and compare (120) the absorption value with a calibration curve to determine the amount of oil in the fluid containing oil. Figure 1. |