CN220170887U - Device for detecting ammonia content in methanol by spectrophotometry - Google Patents
Device for detecting ammonia content in methanol by spectrophotometry Download PDFInfo
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- CN220170887U CN220170887U CN202321666757.5U CN202321666757U CN220170887U CN 220170887 U CN220170887 U CN 220170887U CN 202321666757 U CN202321666757 U CN 202321666757U CN 220170887 U CN220170887 U CN 220170887U
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- fixedly connected
- ammonia content
- connecting rod
- methanol
- workstation
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 66
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 23
- 238000002798 spectrophotometry method Methods 0.000 title abstract description 8
- 239000003153 chemical reaction reagent Substances 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 5
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 claims description 5
- 235000011006 sodium potassium tartrate Nutrition 0.000 claims description 5
- 229940074439 potassium sodium tartrate Drugs 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 6
- 238000002479 acid--base titration Methods 0.000 abstract description 2
- CEQFOVLGLXCDCX-WUKNDPDISA-N methyl red Chemical compound C1=CC(N(C)C)=CC=C1\N=N\C1=CC=CC=C1C(O)=O CEQFOVLGLXCDCX-WUKNDPDISA-N 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 29
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 6
- 239000004327 boric acid Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000002835 absorbance Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 150000001728 carbonyl compounds Chemical class 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000001476 sodium potassium tartrate Substances 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- 241001212279 Neisseriales Species 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- YFDLHELOZYVNJE-UHFFFAOYSA-L mercury diiodide Chemical compound I[Hg]I YFDLHELOZYVNJE-UHFFFAOYSA-L 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model discloses a device for detecting ammonia content in methanol by utilizing a spectrophotometry, which belongs to the technical field of ammonia content in methanol and aims to solve the technical problems: the existing method for measuring the ammonia content in the methanol only comprises an acid-base titration method, wherein methyl red is used as an indicator, and the ammonia content is calculated according to the consumption of hydrochloric acid; the utility model discloses a device for detecting ammonia content in methanol by utilizing a spectrophotometry, which comprises a workbench, an Erlenmeyer flask and a spectrophotometry, wherein a rotating column is symmetrically connected to the top end of the workbench in a rotating way.
Description
Technical Field
The utility model relates to the technical field of methanol measurement, in particular to a device for detecting ammonia content in methanol by using a spectrophotometry.
Background
When the analysis method for detecting the ammonia content in the methanol is used for analysis, a large amount of sulfides, carbon dioxide and a small amount of carbonyl compounds contained in the absorbent can interfere with the analysis result, so that the accuracy of the measurement result is low
At present, the method for measuring the ammonia content in the methanol only has an acid-base titration method, namely, hydrochloric acid standard solution is used for titration, methyl red is used as an indicator, and the ammonia content is calculated according to the consumption of hydrochloric acid.
For this purpose, we propose a device for spectrophotometrically detecting the ammonia content of methanol.
Disclosure of Invention
The utility model aims to provide a device for detecting the ammonia content in methanol by utilizing a spectrophotometry method so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: an apparatus for spectrophotometrically detecting ammonia content in methanol, comprising: workstation, erlenmeyer flask and spectrophotometer, the top symmetry rotation of workstation is connected with the spliced pole, the top fixedly connected with bracing piece of spliced pole, one of them the first connecting rod of top equidistance fixedly connected with of bracing piece, another the second connecting rod of top equidistance fixedly connected with of bracing piece, a plurality of the equal fixedly connected with clip of one end of first connecting rod and second connecting rod, the erlenmeyer flask is held through the clip to the one end of first connecting rod, the rubber head burette is held through the clip to the one end of second connecting rod, the spectrophotometer has been placed on the top of workstation, first household utensils and second household utensils have been placed on the top of workstation, the stop gear of spliced pole.
Preferably, the first vessel is filled with a sodium potassium tartrate solution, and the second vessel is filled with a Nahner reagent.
Preferably, the limiting mechanism comprises; first recess, spring, slider, fixture block and draw-in groove, first recess has been seted up to the bottom of rotating the post, first recess inner wall fixedly connected with spring, the one end fixedly connected with slider of spring, slider and first recess inner wall sliding connection, one side fixedly connected with fixture block of spring is kept away from to the slider, the draw-in groove has been seted up to the top equidistance of workstation, fixture block and draw-in groove joint.
Preferably, the bottom of the clamping block is provided with a round angle, and the number of the clamping grooves corresponds to that of the first connecting rod and the second connecting rod.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, a proper amount of boric acid solution is added and heated to perform pretreatment on a sample, interference of sulfides, carbon dioxide and a small amount of carbonyl compounds is removed, after cooling, the pH value is adjusted to be neutral by using a sodium hydroxide solution, a Neisserial reagent is added, and after a period of time of chromogenic reaction is completed, detection is performed by using a spectrophotometer.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of a workbench according to the utility model;
FIG. 3 is a schematic view of a partial cross-sectional structure of a rotary column according to the present utility model.
In the figure: 1. a work table; 2. an Erlenmeyer flask; 3. a spectrophotometer; 4. rotating the column; 5. a support rod; 6. a first connecting rod; 7. a second connecting rod; 8. a clip; 9. a second vessel; 10. a rubber head dropper; 11. a first vessel; 12. a limiting mechanism; 13. a first groove; 14. a spring; 15. a slide block; 16. a clamping block; 17. a clamping groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, a device for detecting ammonia content in methanol by using spectrophotometry comprises a workbench 1, an Erlenmeyer flask 2 and a spectrophotometer 3, wherein a rotating column 4 is symmetrically and rotatably connected to the top end of the workbench 1, a supporting rod 5 is fixedly connected to the top end of the rotating column 4, a first connecting rod 6 is fixedly connected to the top end of one supporting rod 5 at equal intervals, a second connecting rod 7 is fixedly connected to the top end of the other supporting rod 5 at equal intervals, a plurality of clamps 8 are fixedly connected to one ends of the first connecting rod 6 and the second connecting rod 7, the Erlenmeyer flask 2 is clamped at one end of the first connecting rod 6 through the clamps 8, a rubber head dropper 10 is clamped at one end of the second connecting rod 7 through the clamps 8, the spectrophotometer 3 is arranged at the top end of the workbench 1, a first vessel 11 and a second vessel 12 are arranged at the top end of the workbench 1, a limiting mechanism 12 of the rotating column 4 is arranged in the first vessel 11, and a sodium potassium tartrate solution is contained in the second vessel 12.
Referring to fig. 2-3, the limiting mechanism 12 includes; the novel rotary table comprises a first groove 13, a spring 14, a sliding block 15, a clamping block 16 and a clamping groove 17, wherein the first groove 13 is formed in the bottom end of the rotary column 4, the spring 14 is fixedly connected to the inner wall of the first groove 13, one end of the spring 14 is fixedly connected with the sliding block 15, the sliding block 15 is slidably connected with the inner wall of the first groove 13, one side, far away from the spring 14, of the sliding block 15 is fixedly connected with the clamping block 16, the clamping groove 17 is formed in the top end of the workbench 1 at equal intervals, and the clamping block 16 is clamped with the clamping groove 17.
Preparing the instrument and the material according to the above;
1. a spectrophotometer was equipped with a 1cm cuvette.
2. Colorimetric tube with plug: 50mL.
3. Potassium sodium tartrate aqueous solution: 50g of potassium sodium tartrate was weighed and dissolved in 100mL of water, heated to boil to remove ammonia, cooled and then fixed to 100mL.
4. Ney reagent [ hgi2.2ki ]: 10g of HgI2 and 7g of KI are weighed, dissolved in a small amount of ammonia-free distilled water, 16g of NaOH is dissolved in 50mL of distilled water, cooled, the two solutions are mixed and diluted to 100mL, after the solution is clarified, the supernatant is carefully poured out and stored in a polyethylene bottle, and the polyethylene bottle is sealed and protected from light.
5. Stock solution (1 mg/mL) as standard: 3.141 g of high-grade pure ammonium chloride dried at 100 ℃ is weighed, dissolved in water, transferred into a 1000mL volumetric flask and diluted to a reticle.
6. Working solution (0.01 mg/mL) as standard: 10mL of the standard stock solution was pipetted into a 1 liter volumetric flask and diluted to the scale with water.
7. 20g/L boric acid solution: 10g of boric acid was weighed and dissolved in water, and then the volume was fixed to 500mL.
8. 4% sodium hydroxide solution: 4g of NaOH was weighed and dissolved in 96mL of water, and cooled to room temperature.
Working principle:
when the utility model is used, firstly, methanol, boric acid solution and sodium hydroxide solution are respectively sucked into a rubber head dropper 10, then attention is paid to the clamp 8 clamped on a second connecting rod 7, then 6 Erlenmeyer flasks 2 are clamped on the clamp 8 of a first connecting rod 6, 0.00mL, 2.00 mL, 6.00 mL, 10.00mL, 14.00 mL and 20.00mL of ammonia standard solution are respectively moved into 6 Erlenmeyer flasks 2, 20mL of methanol is respectively added, a proper amount of boric acid solution is added, the solution is diluted to about 80mL by water (at the moment, two support rods 5 are respectively rotated, so that the first connecting rod 6 and the second connecting rod 7 are respectively rotated, at the moment, a clamping block 16 in a rotating column 4 is extruded and starts to compress a spring 14, so that the clamping block 16 is far away from a clamping groove 17, along with the rotation of the rotating column 4, the clamping block 16 is clamped with the clamping groove 17 in the rotating direction, at the moment, the triangular flasks 2 after rotation are still positioned right below any rubber head 2 are ensured, heating of an alcohol lamp is stopped when the alcohol lamp is ignited, the solution is respectively heated to be evaporated to 40mL, the solution is respectively, the solution is cooled to room temperature, the pH is respectively added to the solution is respectively, the solution is evenly mixed to be 6mL until the solution is 1 mL, the solution is uniformly diluted to 1.50 mL, and the solution is added to the solution, and diluted to the solution is uniformly mixed to 1 mL, and the solution is added to the solution, and the solution is 1 mL, and diluted to the solution is subjected to 1 mL to 1 mL. At the wavelength of 420nm, a 2cm cuvette is used for measuring the absorbance, and a standard curve is plotted by taking the absorbance as an abscissa and the ammonia content as an ordinate; in addition, a proper amount of methanol sample is taken and put into a 250mL Erlenmeyer flask 2, a proper amount of boric acid solution is added, water is added for dilution to about 80mL, and the solution is treated by the standard curve drawing method. Measuring the absorbance of a 2cm cuvette at a wavelength of 420 nm; meanwhile, methanol is used as a reagent blank, and the ammonia content in the used alcohol is calculated according to the following formula:
(K-slope of standard curve; A-absorbance of sample; V-sampling volume mL).
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A device for spectrophotometrically detecting the ammonia content of methanol, comprising: workstation (1), erlenmeyer flask (2) and spectrophotometer (3), the top symmetry rotation of workstation (1) is connected with rotation post (4), the top fixedly connected with bracing piece (5) of rotation post (4), one of them the top equidistance fixedly connected with head rod (6) of bracing piece (5), another the top equidistance fixedly connected with second connecting rod (7) of bracing piece (5), a plurality of the equal fixedly connected with clip (8) of one end of head rod (6) and second connecting rod (7), the one end of head rod (6) has Erlenmeyer flask (2) through clip (8) centre gripping, the one end of second connecting rod (7) has rubber head burette (10) through clip (8) centre gripping, spectrophotometer (3) have been placed on the top of workstation (1), first household utensils (11) and second household utensils (9) have been placed on the top of workstation (1), stop gear (12) of rotation post (4).
2. The apparatus for spectrophotometrically detecting the ammonia content of methanol according to claim 1, wherein: the first vessel (11) is filled with a potassium sodium tartrate solution, and the second vessel (9) is filled with a Nahner reagent.
3. The apparatus for spectrophotometrically detecting the ammonia content of methanol according to claim 1, wherein: the limit mechanism (12) comprises; first recess (13), spring (14), slider (15), fixture block (16) and draw-in groove (17), first recess (13) have been seted up to the bottom of spliced pole (4), first recess (13) inner wall fixedly connected with spring (14), the one end fixedly connected with slider (15) of spring (14), slider (15) and first recess (13) inner wall sliding connection, one side fixedly connected with fixture block (16) of spring (14) are kept away from to slider (15), draw-in groove (17) have been seted up to the top equidistance of workstation (1), fixture block (16) and draw-in groove (17) joint.
4. A device for spectrophotometrically detecting the ammonia content of methanol according to claim 3, wherein: rounded corners are formed in the bottom ends of the clamping blocks (16), and the number of the clamping grooves (17) corresponds to that of the first connecting rod (6) and the second connecting rod (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321666757.5U CN220170887U (en) | 2023-06-28 | 2023-06-28 | Device for detecting ammonia content in methanol by spectrophotometry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321666757.5U CN220170887U (en) | 2023-06-28 | 2023-06-28 | Device for detecting ammonia content in methanol by spectrophotometry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220170887U true CN220170887U (en) | 2023-12-12 |
Family
ID=89058972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321666757.5U Active CN220170887U (en) | 2023-06-28 | 2023-06-28 | Device for detecting ammonia content in methanol by spectrophotometry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220170887U (en) |
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2023
- 2023-06-28 CN CN202321666757.5U patent/CN220170887U/en active Active
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