CN204924910U - Colour comparison tube is cleared up to total nitrogen sample of quality of water - Google Patents
Colour comparison tube is cleared up to total nitrogen sample of quality of water Download PDFInfo
- Publication number
- CN204924910U CN204924910U CN201520622980.9U CN201520622980U CN204924910U CN 204924910 U CN204924910 U CN 204924910U CN 201520622980 U CN201520622980 U CN 201520622980U CN 204924910 U CN204924910 U CN 204924910U
- Authority
- CN
- China
- Prior art keywords
- spiral cover
- comparison tube
- dull polish
- water
- total nitrogen
- 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.)
- Expired - Fee Related
Links
Landscapes
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The utility model relates to a colour comparison tube of clearing up of nitrogen project detection is assembled to quality of water. The utility model provides a technical scheme that technical problem adopted is: it comprises body, dull polish stopper, spiral cover to clear up the colour comparison tube. The body is the glass test tube that the texture is even, indicates 10mL, 25mL scale mark on the body, and the inboard of body upper shed department is the dull polish mouth, and the outer wall is threaded. The dull polish stopper matches with the inboard dull polish mouth of body upper shed department. Threaded on the spiral cover inside wall, the internal thread of spiral cover matches with the external screw thread of body outer wall, and the design of spiral cover top has the blast pipe, and the blast pipe exit is sharp mouth, and the blast pipe leads to on -off control with two. Dull polish stopper and spiral cover are applicable to the different stages of detection respectively.
Description
One, technical field
What a kind of water quality total nitrogen project that relates to the utility model detected clears up color comparison tube.
Two, background technology
In natural water and waste water, nitrogen exists with the organic nitrogen form such as the inorganic nitrogens such as nitrate nitrogen, nitrite nitrogen, ammoniacal nitrogen and protein, amino acid, urea, triazo-compound, connection nitrogen, azo, hydrazone class, nitrile, and total nitrogen is the summation of nitrogen in inorganic nitrogen and organic nitrogen and dissolved nitrogen and suspension.In current mensuration water and waste water, the method for total nitrogen is, HJ636-2012 " the mensuration alkaline chitinase of water quality total nitrogen clears up ultraviolet spectrophotometry ", the principle of this analytical approach is: at 120 ~ 124 DEG C (in high-pressure steam sterilizing pan), and following reaction occurs alkaline chitinase:
The atomic oxygen decomposited by various nitride converted for nitrate in water sample, can adopt ultraviolet spectrophotometry in wavelength 220nm and 275nm place, measures absorbance A respectively
220and A
275, be calculated as follows correction absorbance A, total nitrogen (in N) content is directly proportional to correction absorbance A.
A＝A
220-2A
275
This analytical approach detects the accuracy of total nitrogen testing result in sample, and its gordian technique is: the sealing of first digestion tube, when the poor sealing of digestion tube, and the NH in sample
3meeting walk-off-loss under the condition that alkalescence is heated, as the NH in sample
3when content is higher, NH
3walk-off-loss especially serious, cause this analytical approach not to be suitable for NH
3the detection of content higher water body total nitrogen project; It two is completeness of potassium persulfate decomposition reaction, alkaline chitinase this have strong absorption in 220nm wavelength place, being excessive clearing up potassium persulfate in reaction system, if potassium persulfate decomposes not exclusively, then blank value can being caused higher.
Clear up color comparison tube in the past and there is following defect:
(1) HJ636-2012 " the mensuration alkaline chitinase of water quality total nitrogen clears up ultraviolet spectrophotometry " (comprising GB11894-89 " the mensuration alkaline chitinase of water quality total nitrogen clears up ultraviolet spectrophotometry "), Specimen eliminating and constant volume process use the tool plug grournd glass color comparison tube of 25mL specification.The defect of this color comparison tube is that the water shutoff of ground bottle stopper does not seal gas, because " envelope gas " effect is bad, causes NH in water sample
3walk-off-loss.
(2) worker being engaged in monitoring water environment is had, devise one and clear up color comparison tube, it is characterized in that: it is made up of body, spiral cover, body is homogeneous glass test tube, diameter is 10mm ~ 20mm, and be highly 110mm ~ 150mm, the outer wall of body upper shed place has screw thread, spiral cover madial wall has screw thread, and the internal thread of spiral cover mates with the external thread of tube wall.This clears up color comparison tube for water quality monitoring, solves NH in sample to a great extent
3the problem of walk-off-loss, but the problem that unresolved blank value is higher.
Three, summary of the invention
The utility model provides a kind of special water quality total nitrogen Specimen eliminating color comparison tube, adopts HJ636-2012 " the mensuration alkaline chitinase of water quality total nitrogen clears up ultraviolet spectrophotometry " analytical approach NH in detection water sample to solve
3walk-off-loss and the higher problem of blank value.
The technical problems to be solved in the utility model:
(1) color comparison tube structure is cleared up: select suitable structure to solve sample at digestion process NH
3walk-off-loss and potassium persulfate decompose incomplete problem.
(2) color comparison tube material is cleared up: the digestion process of sample and the test process of sample are unlikely to introduce new chaff interference to select suitable material to ensure.
The technical scheme that the utility model technical solution problem adopts is: clear up color comparison tube and be made up of body, frosted plug, spiral cover.Body is homogeneous glass test tube, and body is marked with 10mL, 25mL scale mark, and the inner side of body upper shed place is frosted mouth, and outer wall has screw thread.Frosted plug mates with the inner side frosted mouth of body upper shed place.Spiral cover madial wall has screw thread, and the internal thread of spiral cover mates with the external thread of tube wall, is designed with gas outlet above spiral cover, and exhaust outlet place is sharp mouth, and gas outlet two way cock controls.Spiral cover and gas outlet thereof, two way cock all use teflon to make, and spiral cover and gas outlet make it into through thermoplastic and be integrated.Frosted plug and spiral cover are applicable to the different phase detected respectively.
Four, beneficial effect
The beneficial effects of the utility model are:
(1) during Specimen eliminating, spiral cover of screwing on, and two way cock is placed in closed condition, sample is in air-tight state and clears up, and guarantees that in sample, various nitride is cleared up completely.
(2) after Specimen eliminating completes, open two way cock, post bake is carried out to sample, unnecessary alkaline chitinase solution continues to decompose, decompose the oxygen discharged to be discharged by gas outlet, guarantee that unnecessary potassium persulfate decomposes completely, thus reduce blank value, guarantee the accuracy detecting data.
(3) pressure in the very little and pipe in the sharp nozzle aperture footpath of exhaust outlet is a bit larger tham the pressure (having oxygen to produce in potassium persulfate decomposable process) outside pipe, the pollution that can avoid bringing sample in post bake process (if spiral cover is opened, between different samples and heating arrangement and operation is all easy brings pollution to sample).
(4) clear up color comparison tube post bake and after cooling, turn on spiral cover and use frosted plug instead, the reagent after being convenient to adds, the operation of constant volume and mixing.
Five, accompanying drawing explanation
Accompanying drawing provides structural representation of the present utility model:
Fig. 1: be structural representation during the utility model Specimen eliminating.
Fig. 2: be structural representation during the utility model post bake.
Fig. 3: be the structural representation that the utility model measures process.
The label declaration of parts in schematic diagram:
1. body; 2. frosted plug; 3. spiral cover; 4. gas outlet; 5. two way cock.
Six, embodiment
Below in conjunction with accompanying drawing, technical solution adopted in the utility model is described further:
The utility model is formed primarily of body [1], frosted plug [2], spiral cover [3], gas outlet [4], two way cock [5].There is finished product in body [1] and frosted plug [2] market, and the screw thread of body upper shed outer wall must ask laboratory glassware manufacturer to make according to designing requirement.Gas outlet [4] and the two way cock on it [5] thereof are structures common in laboratory glassware, upper brill one hole of spiral cover [3], and aperture is suitable with gland steam exhauster external diameter, and gas outlet insertion spiral cover makes it into through thermoplastic and is integrated.Glass and polytetrafluoroethylmaterial material are all that laboratory glassware manufacturer produces the conventional material of glass apparatus and corollary apparatus thereof, and whole color comparison digestion tube all can entrust laboratory glassware manufacturer to make according to designing requirement.
Below by using method, technical solution adopted in the utility model is illustrated further:
(1) Specimen eliminating: measure 10.00mL sample in body [1], add alkaline chitinase solution, two way cock [5] is also placed in closed condition by spiral cover of screwing on [3], is placed on 120 ~ 124 DEG C of heating 30min in high-pressure sterilizing pot.Venting is at once taken out while hot and is cleared up color comparison tube, shakes up, places, repeatedly repeat.During Specimen eliminating, clear up color comparison tube and be in Fig. 1 state.
(2) chaff interference is eliminated: open two way cock [5], will clear up color comparison tube and be reentered in high-pressure sterilizing pot, is heated to top pressure valve and blows, powered-down.Alkaline chitinase is heated and following chemical reaction occurs:
The oxygen O that reaction produces
2discharge from gas outlet, impel reaction to move right, thus potassium persulfate is decomposed completely.The chaff interference stage of eliminating clears up color comparison tube and is in Fig. 2 state.
(3) measure: cooling, back out spiral cover [3], add hydrochloric acid solution, be diluted with water to 25mL scale mark, cover frosted plug [2] and shake up, spectrophotometer measures the absorbance of test portion.During mensuration, clear up color comparison tube and be in Fig. 3 state.
Claims (2)
1. that detects for water quality total nitrogen project clears up a color comparison tube, and it is made up of body, frosted plug, spiral cover, it is characterized in that: the inner side of body upper shed place is frosted mouth, and outer wall has screw thread, is equipped with frosted plug and spiral cover respectively, to be applicable to the different phase detected.
2. according to claim 1ly clear up color comparison tube, it is characterized in that: be designed with gas outlet above spiral cover, exhaust outlet place is sharp mouth, and gas outlet two way cock controls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520622980.9U CN204924910U (en) | 2015-08-19 | 2015-08-19 | Colour comparison tube is cleared up to total nitrogen sample of quality of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520622980.9U CN204924910U (en) | 2015-08-19 | 2015-08-19 | Colour comparison tube is cleared up to total nitrogen sample of quality of water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204924910U true CN204924910U (en) | 2015-12-30 |
Family
ID=54974026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520622980.9U Expired - Fee Related CN204924910U (en) | 2015-08-19 | 2015-08-19 | Colour comparison tube is cleared up to total nitrogen sample of quality of water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204924910U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221020A (en) * | 2019-07-04 | 2019-09-10 | 施国栋 | A kind of COD detection device and method |
| CN114486779A (en) * | 2022-01-26 | 2022-05-13 | 北京首钢股份有限公司 | Method for measuring total nitrogen in water |
-
2015
- 2015-08-19 CN CN201520622980.9U patent/CN204924910U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221020A (en) * | 2019-07-04 | 2019-09-10 | 施国栋 | A kind of COD detection device and method |
| CN114486779A (en) * | 2022-01-26 | 2022-05-13 | 北京首钢股份有限公司 | Method for measuring total nitrogen in water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204924910U (en) | Colour comparison tube is cleared up to total nitrogen sample of quality of water | |
| JP2010538297A5 (en) | ||
| CN106198530B (en) | Nutrient salt analyzer structure and its analysis method | |
| CN204214688U (en) | Gas phase separation sampling system of urea hydrolysis reactor | |
| CN104568804A (en) | Method for detecting total nitrogen and total phosphorus of drainage basin | |
| CN206508761U (en) | It is a kind of except the absorption plant of ammonia | |
| CN109678255A (en) | A kind of culture experiment device of the simulation redox fluctuation adjusted based on nitrogen oxygen | |
| CN205719672U (en) | A kind of micro amount of oxygen quick analytical sampling system | |
| CN209055394U (en) | A kind of device of combined digestion total phosphorus and total nitrogen | |
| CN207614634U (en) | A kind of acid waste gas collection and treatment device | |
| CN204028030U (en) | A kind of device for detecting total organic carbon in ultrapure water | |
| CN206736244U (en) | A kind of lactobacillus-fermented sampler | |
| CN110514779A (en) | A kind of experimental system and method for studying coal powder and electrolytic aluminum scraps multifuel combustion characteristic | |
| CN214427264U (en) | Automatic sulfide analyzer | |
| CN211374521U (en) | COD detects uses portable box device | |
| CN205534260U (en) | High temperature corrodes online sampling device of liquid by force | |
| CN104596969B (en) | Basin total nitrogen rapid analysis method | |
| CN217331767U (en) | Anhydrous hydrogen fluoride closed sampling system | |
| CN206946342U (en) | One kind acidifying, which is blown, heats collection device | |
| CN110333312A (en) | The device and method of organotin in a kind of extraction plastics | |
| CN207586103U (en) | A kind of salt mist tester with salt fog processing function | |
| CN206990431U (en) | A kind of device using Gas-phase Molecular Absorption Spectrometry sulphite | |
| CN108732113B (en) | System and method for measuring NO in water body | |
| CN114739750A (en) | Anhydrous hydrogen fluoride closed sampling system | |
| CN206935056U (en) | A kind of gas absorbing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20160819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |