CN110320171A - A kind of special detection device and detection method of Quick Test Vehicle diesel oil urea - Google Patents
A kind of special detection device and detection method of Quick Test Vehicle diesel oil urea Download PDFInfo
- Publication number
- CN110320171A CN110320171A CN201910600875.8A CN201910600875A CN110320171A CN 110320171 A CN110320171 A CN 110320171A CN 201910600875 A CN201910600875 A CN 201910600875A CN 110320171 A CN110320171 A CN 110320171A
- Authority
- CN
- China
- Prior art keywords
- urea
- detection device
- reducing agent
- diesel engine
- biuret
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 239000004202 carbamide Substances 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 title claims abstract description 54
- 239000002283 diesel fuel Substances 0.000 title abstract description 4
- 238000012360 testing method Methods 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 31
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 27
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 18
- 238000000691 measurement method Methods 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims abstract description 5
- 235000013877 carbamide Nutrition 0.000 claims description 55
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 claims description 31
- 239000007864 aqueous solution Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000243 solution Substances 0.000 claims description 12
- 238000002835 absorbance Methods 0.000 claims description 10
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 10
- 239000012670 alkaline solution Substances 0.000 claims description 9
- VZOPRCCTKLAGPN-ZFJVMAEJSA-L potassium;sodium;(2r,3r)-2,3-dihydroxybutanedioate;tetrahydrate Chemical compound O.O.O.O.[Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O VZOPRCCTKLAGPN-ZFJVMAEJSA-L 0.000 claims description 9
- 229940074446 sodium potassium tartrate tetrahydrate Drugs 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910019142 PO4 Inorganic materials 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 239000010452 phosphate Substances 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 8
- FZRCKLPSHGTOAU-UHFFFAOYSA-N 6-amino-1,4-dimethylcyclohexa-2,4-diene-1-carbaldehyde Chemical compound CC1=CC(N)C(C)(C=O)C=C1 FZRCKLPSHGTOAU-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 239000012086 standard solution Substances 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 235000011007 phosphoric acid Nutrition 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- 238000011161 development Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 24
- 239000012490 blank solution Substances 0.000 description 5
- 239000012916 chromogenic reagent Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- ZKDNBOAOTQCXLM-UHFFFAOYSA-N 2,3-dihydroxybutanedioic acid;potassium;sodium Chemical compound [Na].[K].OC(=O)C(O)C(O)C(O)=O ZKDNBOAOTQCXLM-UHFFFAOYSA-N 0.000 description 1
- DGPBVJWCIDNDPN-UHFFFAOYSA-N 2-(dimethylamino)benzaldehyde Chemical compound CN(C)C1=CC=CC=C1C=O DGPBVJWCIDNDPN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- -1 copper complex salt Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229960000935 dehydrated alcohol Drugs 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- AVTYONGGKAJVTE-OLXYHTOASA-L potassium L-tartrate Chemical compound [K+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O AVTYONGGKAJVTE-OLXYHTOASA-L 0.000 description 1
- 239000001472 potassium tartrate Substances 0.000 description 1
- 229940111695 potassium tartrate Drugs 0.000 description 1
- 235000011005 potassium tartrates Nutrition 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- 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 present invention relates to the special detection devices and its application method of a kind of Quick Test Vehicle diesel oil urea, the present invention includes special detection device, matched reagent box and its measurement method three parts, using the measurement method of development, using special detection device, the quick detection of diesel engine NOx reducing agent quality is realized in conjunction with matched reagent box.Advantage of the invention: UV detector apparatus structure is simple, low cost, easy to carry and stand-by time are long；Solvent consumption is few when detection, and reagent shakes up at room temperature, without the processing such as being heated or being had children outside the state plan；It is detected using two point Comparison Method and single-point Comparison Method, easy to operate without establishing standard curve, time of measuring is short, it can be achieved that the target quickly detected, easy to spread.
Description
Technical field
The invention belongs to technical field of quality detection, specifically, being a kind of quickly detection diesel engine nitrogen oxides
The special detection device and its application method of reducing agent quality.
Background technique
Diesel motor is higher than gasoline engine in thermal efficiency because of combustion characteristics, and theoretically one quite energy-efficient
Power science and technology.However diesel combustion can but generate the poisonous fume with NOx nitrogen oxides later, nitrogen oxides has human body
Evil, it is especially very harmful to respiratory system.Therefore it has to handle by modes such as waste gas circulation recovery system, addition urea
These NOx exhaust gas.And the nitrogen oxides reduction in diesel engine NOx reducing agent (aqueous solution of urea) energy vehicle exhaust
It is used to reduce the nitrogen oxides pollution in exhaust gas from diesel vehicle at harmless nitrogen and water, diesel vehicle is made to reach the tail gas of national regulation
Discharge standard.It is influenced to reduce communications and transportation environmental pollution, national standard is to urea content, biuret in aqueous solution of urea
And various impurity contents have stringent define.
Urea content and Biuret Content are the important parameters in aqueous solution of urea, it is therefore necessary to urea therein
And the content of biuret is detected, and GB 29518-2013 " diesel engine NOx reducing agent aqueous solution of urea "
In appendix A and appendix C, urea content, copper complex salt light photometric measurement urine in total nitrogen method measurement aqueous solution of urea is respectively adopted
Biuret Content in element.Both methods is required to establish standard curve, and complex steps are unsatisfactory for quickly detecting diesel engine
NOx reducing agent quality whether He Ge demand, the present invention has chosen suitable urea standard according to GB 29518-2013
Solution, biuret standard solution, be respectively adopted two point Comparison Method under suitable wavelength and single-point Comparison Method to measure standard molten
The absorbance value of liquid and real solution determines urea and contracting in aqueous solution of urea by direct comparison solution absorbance value size
Whether two urea contents are qualified, therefore, it is determined that whether diesel engine NOx reducing agent quality is qualified, what realization quickly detected
Target.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of quickly detection diesel engine nitrogen oxides
The special detection device and its application method of reducing agent quality.
The purpose of the present invention is achieved through the following technical solutions:
A kind of special detection device of quick detection diesel engine NOx reducing agent quality includes dedicated test dress
It sets, matched reagent box and its measurement method three parts；Special detection device structure is consistent with general UV detector, including electricity
Source, LED light source, monochromator, cell, photoelectric converter, Measurement and Data Processing and display system part；Matched reagent box includes
Urea kit and two kinds of biuret reagent box；Urea kit and biuret reagent box are respectively adopted corresponding two point and compare
Method or single-point Comparison Method measure.
LED light source is used for the detection of urea, wavelength 420nm, for the detection of biuret, wavelength 450nm；It is single
Color device includes optical filter and lens two parts part.
Urea kit includes 10-50mg/mL paradime thylaminobenzaldehyde color developing agent, 0.1-1.0mg/mL urea titer
1 and urea titer 2, phosphate aqueous solution (orthophosphoric acid: water ratio be 1.0-5.0, V/V).
The carbamide detection method of special detection device combination matched reagent box is as follows: first by diesel engine nitrogen oxidation to be measured
Object reducing agent is diluted to 0.1-1.0mg/mL；Water, paradime thylaminobenzaldehyde color developing agent and phosphate aqueous solution are mixed in proportion
Baseline correction is carried out after shaking up 1-20min；By urea titer 1 and urea titer 2, by diesel engine nitrogen oxides to be measured
Reducing agent dilution mixes that shake up 1-20min laggard in proportion with paradime thylaminobenzaldehyde color developing agent and phosphate aqueous solution respectively
Row measurement；Record and more corresponding absorbance value size, therefore, it is determined that whether urea content is qualified in aqueous solution to be measured.
Biuret reagent box includes cupric sulfate pentahydrate packaging bag, the 10-40mg/mL sodium potassium tartrate tetrahydrate for having dispensed 10-40mg
Alkaline solution, 1.0-5.0mg/mL biuret standard solution.
The biuret detection method of special detection device combination matched reagent box is as follows: water, sodium potassium tartrate tetrahydrate alkalinity is molten
Liquid and cupric sulfate pentahydrate mix in proportion shake up 1-20min after carry out baseline calibration；Biuret standard solution, diesel oil to be measured are sent out
Motivation NOx reducing agent is mixed with sodium potassium tartrate tetrahydrate alkaline solution and cupric sulfate pentahydrate in proportion respectively shake up 1-20min after
It measures；Record and more corresponding absorbance value size, therefore, it is determined that whether Biuret Content is qualified in aqueous solution to be measured.
Reagent solution in urea kit and biuret reagent box is encapsulated in 20-50mL centrifuge tube；Kit
In be equipped with several 5mL centrifuge tube and 1mL pipette tips；Reagent solution in kit, which passes through 1mL liquid-transfering gun, to be shifted.
Two point Comparison Method need to use under the monochromatic source of 420nm, and single-point Comparison Method need to make under the monochromatic source of 450nm
With determining whether diesel engine NOx reducing agent is qualified by absorbance value that special detection device is shown.
Compared with prior art, the positive effect of the present invention is:
Dedicated structure of the detecting device is simple in the present invention, low cost, easy to carry and stand-by time were at 30 hours or more,
Using not by environmental constraints.
Measurement method solvent consumption used in the present invention is few, and reagent shakes up at room temperature, without being heated or being surpassed
The processing such as raw.
It is detected in the present invention using two point Comparison Method and single-point Comparison Method, it is easy to operate without establishing standard curve,
Time of measuring is short, it can be achieved that the target quickly detected, easy to spread.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of special detection device.
Specific embodiment
A kind of special detection device of quickly detection diesel engine NOx reducing agent quality of the present invention presented below
And its specific embodiment of application method.
The present invention includes special detection device, matched reagent box and its measurement method three parts；Special detection device structure
It is consistent with general UV detector, including power supply, LED light source, monochromator, cell, photoelectric converter, Measurement and Data Processing
And display system part；Matched reagent box includes urea kit and two kinds of biuret reagent box；Urea kit and biuret
Corresponding two point Comparison Method is respectively adopted in kit or single-point Comparison Method measures, also for diesel engine nitrogen oxides
The quick detection of former agent quality.
Example 1
Urea kit production: it weighs 20.00g paradime thylaminobenzaldehyde and is dissolved in appropriate dehydrated alcohol, be transferred to 1
20mg/mL dimethylaminobenzaldehyde chromogenic reagent solution is obtained in 000mL volumetric flask, after constant volume, is transferred in 50mL centrifuge tube；Point
Also known as take 693mg, 726mg urea to be dissolved in suitable quantity of water, be transferred in 1 000mL volumetric flask, obtained after constant volume 0.693mg/mL,
Urea titer 1, the urea titer 2 of 0.726mg/mL is transferred in 50mL centrifuge tube stand-by respectively；It is measured with graduated cylinder
300mL orthophosphoric acid and 200mL aqueous solution are transferred in 50mL centrifuge tube stand-by after mixing；It is packed into several 5mL centrifuge tubes and pipette tips
For use.
Urea content detects in aqueous solution of urea: being first diluted diesel engine NOx reducing agent to be measured, takes
1mL stoste is stand-by after shaking up in 500mL water；Take 1.6mL water, 1.6mL 20mg/mL chromogenic reagent solution, 0.8mL phosphoric acid water-soluble
Liquid obtains blank solution after shaking up 5min in 5mL centrifuge tube；Take 1/ urea titer 2 of 1.6mL urea titer,
1.6mL20mg/mL chromogenic reagent solution, 0.8mL phosphate aqueous solution measure after shaking up 5min in 5mL centrifuge tube；Take 1.6mL
Urea dilution, 1.6mL 20mg/mL chromogenic reagent solution, 0.8mL phosphate aqueous solution measure after shaking up 5min；In 420nm
Under, baseline calibration is carried out using blank solution, urea titer 1, urea titer 2, urea dilution are carried out respectively later
Measurement, record and more corresponding absorbance value size, therefore, it is determined that whether urea content is qualified in aqueous solution to be measured.
The production of biuret reagent box: it is stand-by in the small centrifuge tube of 1mL to weigh several pieces 24mg cupric sulfate pentahydrate；Weigh 25g
Sodium potassium tartrate tetrahydrate, 20g sodium hydroxide are soluble in water, are transferred to 1 000ml volumetric flask, obtain 25mg/mL potassium tartrate after constant volume
Sodium alkaline solution is transferred in 50mL centrifuge tube stand-by；It is soluble in water to weigh 3.000g biuret, is transferred to 1 000ml capacity
Bottle, 3.000mg/mL biuret titer is obtained after constant volume, is transferred in 50mL centrifuge tube stand-by；It is packed into several 5mL centrifuge tubes
And pipette tips are stand-by.
Biuret Content detects in aqueous solution of urea: 3.2mL 20mg/mL sodium potassium tartrate tetrahydrate alkaline solution being taken to be centrifuged in 5mL
Pipe, adds 0.8mL water after pouring into 24mg copper sulphate, obtains blank solution after shaking up 5min；Take 3.2mL 20mg/mL tartaric acid
Potassium sodium alkaline solution adds 0.8mL biuret titer after pouring into 24mg copper sulphate in 5mL centrifuge tube, shake up after 5min to
With；3.2mL 20mg/mL sodium potassium tartrate tetrahydrate alkaline solution is taken in 5mL centrifuge tube, is poured into after 24mg copper sulphate and is added 0.8mL and wait for
Diesel engine NOx reducing agent is surveyed, obtains blank solution after shaking up 5min；At 450 nm, it is carried out using blank solution
Baseline calibration later respectively measures biuret titer, aqueous solution of urea, records and more corresponding absorbance value is big
It is small, therefore, it is determined that whether Biuret Content is qualified in aqueous solution to be measured.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make several improvements and modifications, these improvements and modifications also should be regarded as
In protection scope of the present invention.
Claims (8)
1. a kind of special detection device and its application method of quickly detection diesel engine NOx reducing agent quality, special
Sign is comprising special detection device, matched reagent box and its measurement method three parts；Special detection device structure and general
UV detector it is consistent, including power supply, LED light source, monochromator, cell, photoelectric converter, Measurement and Data Processing and display
Components of system as directed；Matched reagent box includes urea kit and two kinds of biuret reagent box；Urea kit and biuret reagent box
Corresponding two point Comparison Method is respectively adopted or single-point Comparison Method measures.
2. a kind of special detection device of quickly detection diesel engine NOx reducing agent quality as described in claim 1
And its application method, which is characterized in that the LED light source is used for the detection of urea, and wavelength 420nm is used for biuret
Detection, wavelength 450nm；Monochromator includes optical filter and lens two parts part.
3. a kind of special detection device of quickly detection diesel engine NOx reducing agent quality as described in claim 1
And its application method, which is characterized in that the urea kit include 10-50mg/mL paradime thylaminobenzaldehyde color developing agent,
0.1-1.0mg/mL urea titer 1 and urea titer 2, phosphate aqueous solution (orthophosphoric acid: water ratio is 1.0-5.0, V/V).
4. a kind of special detection device of quickly detection diesel engine NOx reducing agent quality as described in claim 1
And its application method, which is characterized in that the carbamide detection method of the special detection device combination matched reagent box is as follows: first
Diesel engine NOx reducing agent to be measured is diluted to 0.1-1.0mg/mL；By water, paradime thylaminobenzaldehyde color developing agent
And phosphate aqueous solution mixes after shaking up 1-20min in proportion and carries out baseline correction；By urea titer 1 and urea titer 2, incite somebody to action
Diesel engine NOx reducing agent dilution to be measured is pressed with paradime thylaminobenzaldehyde color developing agent and phosphate aqueous solution respectively
Ratio mixing measures after shaking up 1-20min；Record and more corresponding absorbance value size, therefore, it is determined that aqueous solution to be measured
Whether middle urea content is qualified.
5. a kind of special detection device of quickly detection diesel engine NOx reducing agent quality as described in claim 1
And its application method, which is characterized in that the biuret reagent box includes the cupric sulfate pentahydrate packaging for having dispensed 10-40mg
Bag, 10-40mg/mL sodium potassium tartrate tetrahydrate alkaline solution, 1.0-5.0mg/mL biuret standard solution.
6. a kind of special detection device of quickly detection diesel engine NOx reducing agent quality as described in claim 1
And its application method, which is characterized in that the biuret detection method of the special detection device combination matched reagent box is as follows:
Water, sodium potassium tartrate tetrahydrate alkaline solution and cupric sulfate pentahydrate are mixed in proportion and carry out baseline calibration after shaking up 1-20min；It will contract two
Urea standard solution, diesel engine NOx reducing agent to be measured are pressed with sodium potassium tartrate tetrahydrate alkaline solution and cupric sulfate pentahydrate respectively
Ratio mixing measures after shaking up 1-20min；Record and more corresponding absorbance value size, therefore, it is determined that aqueous solution to be measured
Whether middle Biuret Content is qualified.
7. a kind of special detection device of quickly detection diesel engine NOx reducing agent quality as described in claim 1
And its application method, which is characterized in that the reagent solution in the urea kit and biuret reagent box is encapsulated in
In 20-50mL centrifuge tube；The centrifuge tube and 1mL pipette tips of several 5mL are housed in kit；Reagent solution in kit passes through
1mL liquid-transfering gun is shifted.
8. a kind of special detection device of quickly detection diesel engine NOx reducing agent quality as described in claim 1
And its application method, which is characterized in that the two point Comparison Method need to use under the monochromatic source of 420nm, single-point Comparison Method
It need to be used under the monochromatic source of 450nm, diesel engine nitrogen oxidation is determined by absorbance value that UV detector is shown
Whether object reducing agent is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600875.8A CN110320171A (en) | 2019-07-04 | 2019-07-04 | A kind of special detection device and detection method of Quick Test Vehicle diesel oil urea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600875.8A CN110320171A (en) | 2019-07-04 | 2019-07-04 | A kind of special detection device and detection method of Quick Test Vehicle diesel oil urea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110320171A true CN110320171A (en) | 2019-10-11 |
Family
ID=68122651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910600875.8A Pending CN110320171A (en) | 2019-07-04 | 2019-07-04 | A kind of special detection device and detection method of Quick Test Vehicle diesel oil urea |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110320171A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051224A (en) * | 2020-08-12 | 2020-12-08 | 昆明理工大学 | Method for detecting blending ratio of biodiesel blending fuel based on ultraviolet-visible spectrophotometry |
| CN118010717A (en) * | 2024-04-09 | 2024-05-10 | 山东新蓝环保科技有限公司 | Method for detecting biuret in urea aqueous solution of nitrogen oxide reducing agent |
-
2019
- 2019-07-04 CN CN201910600875.8A patent/CN110320171A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051224A (en) * | 2020-08-12 | 2020-12-08 | 昆明理工大学 | Method for detecting blending ratio of biodiesel blending fuel based on ultraviolet-visible spectrophotometry |
| CN118010717A (en) * | 2024-04-09 | 2024-05-10 | 山东新蓝环保科技有限公司 | Method for detecting biuret in urea aqueous solution of nitrogen oxide reducing agent |
| CN118010717B (en) * | 2024-04-09 | 2024-06-18 | 山东新蓝环保科技有限公司 | Method for detecting biuret in urea aqueous solution of nitrogen oxide reducing agent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103472061B (en) | The on-line measuring device of sulfur trioxide and method in a kind of flue gas | |
| CN110320171A (en) | A kind of special detection device and detection method of Quick Test Vehicle diesel oil urea | |
| CN103698287B (en) | For detecting the dim light signal detection device of seawater pH value | |
| Bajaj | Colorimetric determination of capsaicin in Capsicum fruits | |
| CN104833641B (en) | The in-vitro simulated dissolution of nicotine and continuous on-line detection method in a kind of bagged buccal tobacco product | |
| CN105628633A (en) | Method for determining lead content of feed mildew preventive | |
| CN106290163A (en) | Dinitrogen pentoxide and concentration of nitric acid on-line monitoring system and monitoring method in a kind of air | |
| CN102980858A (en) | Small-size sequential injection nitride analysis system | |
| CN206161538U (en) | A monitoring devices for nitrate and nitrite | |
| CN106198416B (en) | A kind of preparation and application method of the quick detection agent measuring arsenic in water body | |
| CN105445266B (en) | A kind of device and method of colorimetric method measurement ammonia in flue gas content | |
| CN110006833A (en) | A kind of analyzing detecting method of air amount of nitrogen oxides | |
| CN205003004U (en) | Automatic calibration device of coal fired power plant flue gas mercury measuring apparatu | |
| CN209264551U (en) | Content of nitrogen dioxide detection device | |
| CN109374536A (en) | Ozone concentration measurement device and method | |
| CN206281703U (en) | It is a kind of to clear up and measure total phosphorus, the device of total nitrogen content in water sample | |
| CN211741080U (en) | Nitrogen oxide analyzer based on chemiluminescence method | |
| CN102590115A (en) | Method for determining silica-alumina ratio in iron-containing zeolite | |
| CN108344702A (en) | Ultraviolet-visible spectrophotometry measures content of sulfur dioxide method in vanadium energy-accumulating medium | |
| CN209264552U (en) | Ozone concentration measurement device | |
| CN111537503B (en) | Sulfide analysis method and automatic analyzer | |
| CN102323226A (en) | A kind of method of measuring three nitrogen concentrations in the water | |
| CN210322809U (en) | Device for analyzing and determining cyanide in water by flow injection | |
| CN205484056U (en) | Nitrogen oxide analysis appearance | |
| CN102175673A (en) | Method for detecting total selenium content |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191011 |