Method for measuring concentration of surfactant solution based on image acquisition
A surfactant and solution concentration technology, which is applied in the direction of testing moving fluid/granular solids, etc., can solve the high maintenance requirements of the working system by the radioactive densitometer method, the lagging test data of the density bottle test method, and the extreme requirements for the cleanliness of the sample dish. Advanced problems, to achieve the effect of low cost of process equipment, convenient testing, and less solution to be tested
Pending Publication Date: 2020-05-26
XI'AN PETROLEUM UNIVERSITY
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Problems solved by technology
[0003] The test data of the density bottle test method in the titration analysis method and density determination method lags behind, and the solution concentration cannot be adjusted in time in actual production; Causes measurement errors; the radioactive density meter method has particularly high maintenance requirements for the working system and is harmful to the human body; the ultrasonic test method is easily affected by foaming, impurities, vibration, etc., causing measurement errors; the application equipment of the refractive index method is complex and expensive, And the cleanliness of the sample dish is extremely high
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[0044] The method for measuring the concentration of surfactant solution based on image acquisition in this embodiment comprises the following steps:
[0045] Step 1, prepare anionic surfactant (critical micelle concentration is 0.20%, solute mass percentage) known concentration series solution;
[0046] Step 2, use spotting capillary to vertically insert into surfactant solutions of different concentrations, observe and record capillarity images of surfactant solutions with different concentrations under a microscope, observe the rising height and wetting contact of surfactant solutions in the capillary in the image angle, such as figure 1 and Figure 2(a) ~ Figure 2(j) As shown, according to different concentrations and obtained surfactant solution rising height and wetting contact angle to establish a standard database, the form of the database is to fit the obtained data into a curve;
[0047] Step 3, use the spotting capillary to vertically insert the surfactant solutio...
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The invention discloses a method for determining the concentration of a surfactant solution based on image acquisition. The method comprises the following steps of: firstly, preparing a series of solutions with known concentrations of surfactants, vertically inserting a sample application capillary tube into the prepared surfactant solutions with different concentrations, observing and recording capillary phenomenon images of the surfactant solutions with different concentrations, and establishing an enough database, and in the case of measuring the concentration of a surfactant solution withunknown concentration, using the sample application capillary tube to be vertically inserted into a surfactant to-be-measured solution with unknown concentration, observing a capillary phenomenon image of the surfactant to-be-measured solution, and acquiring the concentration of the surfactant to-be-measured solution corresponding to the capillary phenomenon image of the surfactant solution with known concentration. According to the method, the capillary phenomenon is taken as a principle, the capillary phenomenon image of the surfactant solution is observed, and the characteristics of reducing the surface tension and changing the wettability of the surfactant solution are combined, so that the concentration of the surfactant solution with unknown concentration is rapidly and accurately measured.
Description
technical field [0001] The invention belongs to the technical field of solution concentration measurement, and in particular relates to a method for measuring the concentration of a surfactant solution based on image acquisition. Background technique [0002] The concentration of a solution refers to the amount of solute contained in a certain amount of solution (or solvent). At present, the commonly used concentration determination methods mainly include titration analysis, density determination and refractive index determination. Titration analysis method is a chemical analysis method, which is to add a standard solution of known and accurate concentration to the solution to be tested drop by drop until the chemical reaction is complete, and then calculate the concentration and volume of the standard solution to be tested according to the concentration and volume of the standard solution used. A method for measuring the concentration of a solution component. The density ...
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IPC IPC(8): G01N21/85
CPCG01N21/85
Inventor 任晓娟王睿罗向荣张鑫赵帅田进王杠杠
Owner XI'AN PETROLEUM UNIVERSITY