IP Library Granted Patent US 8,068,218
Granted Patent B2
US 8,068,218 · App. 12/422,817 · Granted Nov 29, 2011

Water in oil measurement using stabilizer

Assignee: Agilent Technologies, Inc.
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Quick Facts
Patent No.
US 8,068,218
App. No.
12/422,817
Granted
Nov 29, 2011
Kind
B2
Abstract

A method for determining an amount of polar substance in a non-polar media includes adding a surfactant to increase a dispersion of the polar substance in the non-polar media and to increase the optical absorbance of the polar substance in the non-polar media to create a sample, passing an initial optical spectrum through the sample, measuring a resultant optical spectrum exiting the sample, relating the resultant optical spectrum to a predetermined quantitative calibration, and determining a concentration of the polar substance in the non-polar media based on the relation of the resultant optical spectrum to the quantitative calibration.

Claims (52)

1. A method for determining, an amount of polar substance in a non-polar media, the method comprising:

adding a surfactant to increase a dispersion of the polar substance in the non-polar media and to increase the optical absorbance of the polar substance in the non-polar media to create a sample;

passing an initial optical spectrum through the sample;

measuring a resultant optical spectrum exiting the sample;

relating the resultant optical spectrum to a predetermined quantitative calibration; and determining a concentration of the polar substance in the non-polar media based on the relation of the resultant optical spectrum to the quantitative calibration.

2. The method as set forth in claim 1 , further including, before the measuring step:

delaying at least 20 minutes.

3. The method as set forth in claim 1 , further including: creating the quantitative calibration.

4. The method as set forth in claim 3 , wherein the step of creating a quantitative calibration includes:

correlating at least one of band intensity and area to known analyte concentrations using a univariate technique.

5. The method as set forth in claim 3 , wherein the step of creating, a quantitative calibration includes:

establishing a correlation between spectral data and known analyte concentrations using a multivariate technique.

6. The method as set forth in claim 1 , wherein the passing step includes one of:

passing an initial ultraviolet optical spectrum through the sample;

passing an initial visible optical spectrum through the sample;

passing an initial near-infrared optical spectrum through the sample;

passing an initial infrared optical spectrum through the sample; and

passing an initial Raman optical spectrum through the sample.

7. The method as set forth in claim 6 , wherein the measuring step respectively includes one of:

measuring a resultant ultraviolet optical spectrum exiting the sample;

measuring a resultant visible optical spectrum exiting the sample;

measuring a resultant near-infrared optical spectrum exiting the sample;

measuring a resultant infrared optical spectrum exiting the sample; and

measuring a resultant Raman optical spectrum exiting, the sample.

8. The method as set forth in claim 1 , further including:

producing inverse micelles, as a result of the addition of the surfactant, for producing a substantially homogeneous mixture of the polar substance in the non-polar media.

9. The method as set forth in claim 1 , wherein the determining step includes:

determining a concentration of water in oil based on the relation of the resultant optical spectrum to the quantitative calibration.

10. The method as set forth in claim 1 , further including:

distributing the surfactant within the polar substance within the non-polar media.

11. The method as set forth in claim 1 , further including:

creating the surfactant to include a polar end which hydrogen bonds to the polar substance and a non-polar aliphatic, alkyl aromatic, silicone, perfluorinated or chlorinated hydrocarbon end that dissolves fully into the non-polar substance.

12. A sample to be measured for determining an amount of a polar substance in a non-polar media, the sample comprising:

a polar substance;

a non-polar media, the polar substance and non-polar media creating a mixture; and

a predetermined percentage of a surfactant in the mixture to increase a dispersion of the polar substance in the non-polar media and to increase an optical absorbance of the polar substance in the non-polar media to create a sample, a concentration of the polar substance in the non-polar media being determined based on a relation of a resultant optical spectrum exiting the sample to a quantitative calibration.

13. The sample as set forth in claim 12 , wherein, the polar substance is water.

14. The sample as set forth in claim 13 , wherein the non-polar substance is oil.

15. The sample as set forth in claim 12 , therein the predetermined percentage of the surfactant in the mixture is about 3.2 wt % surfactant.

16. The sample as set forth in claim 15 , wherein:

the surfactant includes a polar end which hydrogen bonds to the polar substance and a non-polar aliphatic, alkyl aromatic, perfluorinated or chlorinated hydrocarbon end that dissolves fully into the non-polar substance.

17. The sample as set forth in claim 16 , wherein:

the surfactant contains non-ionic, cationic, or anionic surfactants;

the polar end group consists of 1-15 moles of ethylene oxide adduct, a substituted sorbitan oleate, alkyl-amine, alkyl-ammonium, sarcoside, amino acid, glycerol esters or derivatives, carboxylate, phosphate, amino phosphoric acid, phosphoric acid, or sulfonate functional group; and

the non-polar aliphatic, alkyl aromatic, silicone, perfluorinated or chlorinated hydrocarbon group is C3-C32 in length or Si1-Si32 in length for silicone based surfactants.

18. The sample as set forth in claim 12 , wherein the surfactant settles in the mixture for about 20 minutes to create the sample.

19. The sample as set forth in claim 12 , wherein:

the relative amounts of the polar substance and the water in the sample are determined as a ratio of an amount of mid-infrared light exiting the sample to an amount of the mid-infrared light entering the sample.

20. The sample as set forth in claim 12 , wherein:

the sample has a water absorbance of about three times greater than a same sample measured under similar conditions without the surfactant.

21. The sample as set forth in claim 12 , wherein:

an infrared optical spectrum passes through the sample to create the resultant optical spectrum.

Assignments (2)
PATENT ASSIGNMENT Recorded Mar 21, 2011
From: A2 TECHNOLOGIES INC
To: AGILENT TECHNOLOGIES, INC.
Reel/Frame 025987/0464 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 3, 2009
From: HIGGINS, FRANKLIN S.; SEELENBINDER, JOHN
To: A2 TECHNOLOGIES, LLC
Reel/Frame 023042/0230 →
Continuity (2)
Provisional Application 61044502 · Apr 13, 2008
Related Publication 20090257047A1 · Oct 15, 2009