CN113804754A - Soluble organic matter aqueous solution detection device and detection method - Google Patents
Soluble organic matter aqueous solution detection device and detection method Download PDFInfo
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- CN113804754A CN113804754A CN202111096767.5A CN202111096767A CN113804754A CN 113804754 A CN113804754 A CN 113804754A CN 202111096767 A CN202111096767 A CN 202111096767A CN 113804754 A CN113804754 A CN 113804754A
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- 239000007864 aqueous solution Substances 0.000 title claims abstract description 20
- 239000005416 organic matter Substances 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 239000000243 solution Substances 0.000 claims abstract description 98
- 239000011521 glass Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 150000002894 organic compounds Chemical class 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 9
- 230000003321 amplification Effects 0.000 abstract description 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 18
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 15
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 6
- 239000008103 glucose Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/014—Resonance or resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/022—Liquids
- G01N2291/0228—Aqueous liquids
Abstract
The invention discloses a soluble organic matter aqueous solution detection device and a detection method, comprising a signal source, a glassware, a power amplifier, a laser source and an optical screen; the glass ware is attached with a layer of reflector, the laser of the laser source is reflected by the reflector and then emitted to the optical screen, the signal source is electrically connected with the power amplifier, and the power amplifier and the optical screen are respectively arranged on two sides of the glass ware. The invention utilizes the different resonance frequencies of the solutions with different concentrations and the vibration measurement by an optical amplification method to further measure the concentration of the solution, provides a new scheme for measuring the concentration of the solution, and simultaneously has the advantages of wide concentration measurement range, simple equipment and simple and convenient operation.
Description
Technical Field
The invention discloses a device and a method for detecting a soluble organic matter aqueous solution, and relates to the technical field of soluble organic matter aqueous solution detection.
Background
The existing method for measuring the concentration of a solution is the measurement of the refractive index of the solution, because the refractive index of the solution is closely related to the concentration of the solution, the measurement range of the existing Abbe refractometer which is used more is relatively smaller, while the polarimeter is only suitable for measuring the concentration of the optically active solution, and whether the brightness of the three-division field is the same or not is judged by human eyes, so that larger errors are easy to generate; the solution height is measured according to the relation between the solution refractive index and the concentration, the method is only suitable for measuring the concentration of the transparent solution, the commonly used method is to measure the liquid refractive index by using an Abbe refractometer, but the refractive angle is not easy to measure, the change of the general liquid refractive index along with the concentration is not obvious, and the measurement error caused by the method is larger. Although the refractive index of the liquid measured by the refraction limit method has a large variation range of the incident angle and the refraction angle of the measured light path, three groups of data of the incident angle, the emergent angle and the vertex angle of the triangular prism need to be measured, and the calculation formula is complex, so that the method is not advisable.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides a device and a method for detecting a soluble organic matter aqueous solution, which have the advantages of simple equipment, simple and convenient operation and wide adaptability.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a soluble organic matter aqueous solution detection device which is characterized in that: comprises a signal source, a glass ware, a power amplifier, a laser source and an optical screen; the signal source electric connection power, adhere to one deck reflector panel on the glassware, the laser of laser source shoots to the light screen piece after the reflector panel reflection, signal source electric connection power amplifier, power amplifier and light screen piece be arranged in the both sides of glassware respectively, soluble organic matter aqueous solution include: glucose solution, ethylene glycol solution and glycerol solution.
Furthermore, the glass ware is a goblet, and the goblet is easier to vibrate under the influence of sound waves, so that the resonance frequency is easier to determine through the deformation of light spots.
Furthermore, the distance between the power amplifier and the glass ware is 0.5-1 cm, and the distance between the optical screen and the glass ware is 2-4 m.
The method for detecting the soluble organic matter aqueous solution is characterized by comprising the following steps of:
the method comprises the following steps: acquiring the corresponding relation between the resonance frequency between a pre-calibrated glassware and a solution and the concentration of the solution;
step two: pouring a solution to be detected into a glass vessel, connecting a signal source with a power amplifier, enabling an empty glass cup to vibrate by sound wave signals sent by the signal source and the power amplifier, adjusting the signal source from small to large, and reading the output frequency of the signal source when the glass vessel and the solution to be detected resonate, namely when the width of a light spot reflected to laser on an optical screen is maximum;
step three: and (4) obtaining concentration data of the solution to be detected according to the corresponding relation between the solution concentration and the resonance frequency in the step (1).
Further, in step 1: the pre-calibrating the corresponding relationship between the resonance frequency of the glassware and the solution and the concentration of the solution specifically comprises the following steps:
step 1: opening a laser source, reflecting the laser of the laser source by a reflector and then emitting the laser to a light screen to observe light spots;
step 2: pouring a solution with a known concentration into a glass vessel;
and step 3: connecting a signal source with a power amplifier, adjusting the output frequency of the signal source from low to high, enabling the hollow glass cup to vibrate by sound wave signals sent by the signal source and the power amplifier, observing light spots formed by reflected laser, and recording the output frequency of the signal source, namely the resonance frequency of a glassware and the solution when the light spots reach the thickest, so as to form a group of solution concentration and resonance frequency data;
and 4, step 4: washing glassware, pouring solution with another concentration, and repeating the measuring step in the step 3 until at least 10 groups of different solution concentrations and resonant frequency data exist;
and 5: and (4) fitting a plurality of groups of different solution concentrations in the step (4) with corresponding resonance frequency data to form a line, and finishing the calibration corresponding relation.
Further, the solution concentration and resonance frequency data included adding an equal volume of aqueous solution to the glassware, the solution concentration being 0.
Furthermore, scale marks are arranged on the glassware, the value of the scale marks is within the range of 0-400 ml, the volume of the solution poured in the steps 2 and 3 is the same, and the volume is 250-350 ml.
Further, observing a light spot formed by the reflected laser in step 3, and recording the output frequency of the signal source at the moment when the width of the light spot reaches the thickest, specifically comprises the following steps: regulating the output frequency of the signal source from low to high, the step length is 1Hz, recording the width and thickness of the light spot under each step length, and when the output signal of the signal source reaches a certain frequency f0When the width of the light spot is x0Then the output frequency of 1Hz is increased, the light spot can be obviously thinned, the output frequency is continuously increased, the light spot is continuously thinned, and then the judgment can be made, and the output frequency of the signal source is f0When the light spot reaches the thickest x0And the resonance frequency of the glassware and the solution is f0。
Has the advantages that: the invention provides a new scheme for measuring the concentration of a solution by using the method for measuring the vibration by using the optical amplification method according to the difference of the resonance frequencies of the solutions with different concentrations. Compared with the prior art, the experimental scheme has the advantages of wide concentration measurement range, obvious and visual measurement result, simple equipment and simple and convenient operation, and is suitable for various water-soluble solutions.
Drawings
FIG. 1 is a schematic structural diagram of a detecting device according to the present invention;
FIG. 2 is a schematic view of a first embodiment of the present invention;
FIG. 3 is a schematic view of a second embodiment of the present invention;
FIG. 4 is a schematic view of a third embodiment of the present invention.
Detailed Description
The following describes the embodiments in further detail with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a device for detecting a soluble organic substance aqueous solution is characterized in that: comprises a signal source, a glass ware, a power amplifier, a laser source and an optical screen; the signal source is electrically connected with a power supply, a layer of reflector is attached to the glassware, laser of the laser source is reflected by the reflector and then is emitted to the light screen, the position a is the position of a reflected light spot, and the width bc is the width of the light spot when the glassware vibrates; the signal source is electrically connected with the power amplifier, and the power amplifier and the optical screen are respectively arranged on two sides of the glassware; the glass ware is a goblet, the distance between the power amplifier and the glass ware is 1cm, and the distance between the optical screen and the glass ware is 3 m.
The first embodiment is as follows: glucose solution
First is a pre-scaling process. When the sound wave signal is not sent out, the goblet is static and does not vibrate, the laser beam is emitted to the goblet and reflected, and the position of a light spot formed by the reflected laser beam on the optical screen is recorded, wherein the light spot is in the central position of the optical screen;
pouring 10% glucose solution into the empty goblet, enabling the solution to reach 300ml of scales of the goblet, adjusting the output frequency of a signal source from low to high, wherein the step length is 1Hz, recording the width of a light spot under each step length, when the frequency of the signal source output signal reaches 450Hz, the width of the light spot is 12.6cm, then increasing the output frequency of 1Hz, obviously thinning the light spot, continuously increasing the output frequency, continuously thinning the light spot, and judging that when the output frequency of the signal source is 450Hz, the thickness of the light spot is 12.6cm, and the resonant frequency of a glassware and the solution is 450 Hz; the thickness of the spot at this time was recorded at 12.6 cm.
Repeating the experiment, pouring out the glucose solution in the goblet, cleaning the goblet, pouring the solution with other concentration (10% concentration is increased each time) into the empty goblet, making the solution reach the same scale, repeating the previous operation, and recording the output frequency of the signal source when the goblet reaches resonance each time.
The solution concentrations were made to correspond one-to-one to the resonance frequencies, and the calibration data are shown in fig. 2.
Measuring the concentration of glucose solution with unknown concentration: and (3) pouring the glucose solution with unknown concentration into the goblet, enabling the solution to reach the same volume, adjusting the output frequency of the signal source from low to high, observing the thickness of the reflected light spot, recording the output frequency of the signal source when the light spot is thickest and the goblet and the solution with unknown concentration reach resonance, namely the resonance frequency, and determining the concentration of the solution according to the data during calibration.
Example two: ethylene glycol solution
First is a pre-scaling process. When the sound wave signal is not sent out, the goblet is static and does not vibrate, the laser beam is emitted to the goblet and reflected, the position of a light spot formed by the laser beam reflected on the optical screen is recorded, the light spot is positioned in the center of the optical screen,
pouring 10% concentration glycol solution into the empty goblet, enabling the solution to reach 300ml of scales of the goblet, adjusting the output frequency of a signal source from low to high, wherein the step length is 1Hz, recording the width of a light spot under each step length, when the frequency of the signal source output signal reaches 452Hz, the width of the light spot is 12.6cm, then increasing the output frequency of 1Hz, obviously thinning the light spot, continuously increasing the output frequency, continuously thinning the light spot, and judging that when the output frequency of the signal source is 452Hz, the thickness of the light spot is 12.6cm, and the resonant frequency of a glassware and the solution is 452 Hz; simultaneously recording the thickness of the light spot at the moment to be 12.6 cm;
repeating the experiment, pouring out the glycol solution in the goblet, cleaning the goblet, pouring the solution with other concentration (10% concentration is increased each time) into the empty goblet, making the solution reach the same scale, repeating the previous operation, and recording the output frequency of the signal source when the goblet reaches resonance each time.
The solution concentrations were made to correspond one-to-one to the resonance frequencies, and the calibration data are shown in fig. 3.
Measuring the concentration of an ethylene glycol solution with unknown concentration: and (3) pouring the glycol solution with unknown concentration into the goblet, enabling the solution to reach the same height, adjusting the output frequency of the signal source from low to high, observing the thickness of the reflected light spot, recording the output frequency of the signal source when the light spot is thickest and the goblet and the solution with unknown concentration reach resonance, namely the resonance frequency, and determining the concentration of the solution by comparing the data at the time of calibration.
Example three: glycerol solution
First is a pre-scaling process. When the sound wave signal is not sent out, the goblet is static and does not vibrate, the laser beam is emitted to the goblet and is reflected, the position of a light spot formed by the reflected laser beam on the light screen is recorded,
pouring 10% concentration glycerol solution into the empty goblet, enabling the solution to reach 300ml scale of the goblet, when the frequency of a signal source output signal reaches 452Hz, enabling the width of a light spot to be 12.5cm, then increasing the output frequency by 1Hz, enabling the light spot to be obviously thinned, continuously increasing the output frequency, enabling the light spot to be continuously thinned, namely judging that when the output frequency of the signal source is 452Hz, the thickness of the light spot is 12.5cm, and the resonant frequency of a glassware and the solution is 452 Hz; simultaneously recording the thickness of the light spot at the moment to be 12.5 cm;
repeating the experiment, pouring out the glycerol solution in the goblet, cleaning the goblet, pouring the solution with other concentration (10% concentration is increased each time) into the empty goblet, making the solution reach the same scale, repeating the previous operation, and recording the output frequency of the signal source when the goblet reaches resonance each time.
The solution concentrations were made to correspond one-to-one to the resonance frequencies, and the calibration data are shown in fig. 4.
Measuring the concentration of glycerol solution with unknown concentration: and (3) pouring the glycerol solution with unknown concentration into the goblet, enabling the solution to reach the same volume corresponding to the calibration standard, adjusting the output frequency of the signal source from low to high, observing the thickness of a reflected light spot, recording the output frequency of the signal source when the light spot is thickest and the goblet and the solution with unknown concentration reach resonance, namely the resonance frequency, and determining the concentration of the solution by comparing the data during calibration.
The calibration process of the soluble organic matter aqueous solution can be completed in advance to form a database of a soluble organic matter aqueous solution concentration and resonant frequency table, the solution concentration and the resonant frequency can be fitted into a corresponding relation curve, in actual measurement, the resonant frequency of the solution with unknown concentration and a glassware can be measured only according to the technical scheme (when in measurement, the distance between a power amplifier and an optical screen from the glassware is the same as that in calibration), and then the corresponding relation table is extracted according to the type of the solution to be measured, so that the concentration of the solution of the type can be known.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A soluble organic matter aqueous solution detection device which is characterized in that: comprises a signal source, a glass ware, a power amplifier, a laser source and an optical screen; the glass ware is attached with a layer of reflector, the laser of the laser source is reflected by the reflector and then emitted to the optical screen, the signal source is electrically connected with the power amplifier, and the power amplifier and the optical screen are respectively arranged on two sides of the glass ware.
2. The apparatus for detecting soluble organic compounds in water as claimed in claim 1, wherein the glass vessel is a goblet.
3. The apparatus for detecting soluble organic compounds in water solution according to claim 1, wherein the distance between the power amplifier and the glass ware is 0.5-1 cm, and the distance between the optical screen and the glass ware is 2-4 m.
4. A soluble organic matter aqueous solution detection method based on the soluble organic matter aqueous solution detection device according to any one of claims 1 to 3, characterized by comprising the steps of:
the method comprises the following steps: acquiring the corresponding relation between the resonance frequency between a pre-calibrated glassware and a solution and the concentration of the solution;
step two: pouring a solution to be detected into a glass ware, starting a laser source, observing light spots on an optical screen, connecting a signal source with a power amplifier, adjusting the signal source from small to large, and reading the output frequency of the signal source when the glass ware and the solution to be detected resonate, wherein the output frequency is equal to the resonant frequency;
step three: and (4) obtaining concentration data of the solution to be detected according to the corresponding relation between the solution concentration and the resonance frequency in the step (1).
5. The method for detecting a soluble organic matter aqueous solution according to claim 4, wherein in the step 1: the pre-calibrating the corresponding relationship between the resonance frequency of the glassware and the solution and the concentration of the solution specifically comprises the following steps:
step 1: opening a laser source, reflecting the laser of the laser source by a reflector and then emitting the laser to a light screen to observe light spots on the light screen;
step 2: pouring a solution with a known concentration into a glass vessel;
and step 3: connecting a signal source with a power amplifier, adjusting the output frequency of the signal source from low to high, observing a light spot formed by reflected laser, and recording the output frequency of the signal source, namely the resonance frequency of a glassware and the solution at the moment when the width of the light spot reaches the thickest, so as to form a group of solution concentration and resonance frequency data;
and 4, step 4: washing glassware, pouring solution with another concentration, and repeating the measuring step in the step 3 until at least 10 groups of different solution concentrations and resonant frequency data exist;
and 5: and (4) fitting a plurality of groups of different solution concentrations in the step (4) with corresponding resonance frequency data to form a line, and finishing the calibration corresponding relation.
6. The method for detecting the soluble organic matter aqueous solution as claimed in claim 5, wherein the data of the solution concentration and the resonance frequency in step 4 comprises that a glass ware is added with an equal volume of the aqueous solution, and the solution concentration is 0.
7. The method for detecting the soluble organic matter aqueous solution as claimed in claim 5, wherein the glass ware is provided with scale marks, and the volumes of the solutions poured in the steps 2 and 3 are the same and are 250-350 ml.
8. The method of claim 5 for detecting soluble organic compounds in waterThe method is characterized in that a light spot formed by reflected laser is observed in the step 3, and when the width of the light spot reaches the thickest, the step of recording the output frequency of a signal source at the moment specifically comprises the following steps: regulating the output frequency of the signal source from low to high, the step length is 1Hz, recording the width and thickness of the light spot under each step length, and when the output signal of the signal source reaches a certain frequency f0When the width of the light spot is x0Then the output frequency of 1Hz is increased, the light spot can be obviously thinned, the output frequency is continuously increased, the light spot is continuously thinned, and then the judgment can be made, and the output frequency of the signal source is f0When the light spot reaches the thickest x0And the resonance frequency of the glassware and the solution is f0。
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| CN104916199A (en) * | 2015-06-25 | 2015-09-16 | 陕西师范大学 | Transparent liquid mutual solution process visualization experiment device and experiment method |
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2021
- 2021-09-18 CN CN202111096767.5A patent/CN113804754A/en active Pending
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|---|---|---|---|---|
| CN1727875A (en) * | 2005-07-19 | 2006-02-01 | 大连理工大学 | Method for detecting density of hydrogen |
| CN104916199A (en) * | 2015-06-25 | 2015-09-16 | 陕西师范大学 | Transparent liquid mutual solution process visualization experiment device and experiment method |
| CN205374301U (en) * | 2016-02-19 | 2016-07-06 | 南京信息工程大学 | Measure device of solution strength |
| CN111279187A (en) * | 2017-09-07 | 2020-06-12 | 泰科电子日本合同会社 | Concentration measuring instrument |
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