CN103376239A - Injection pump type ammonia nitrogen analyzer - Google Patents
Injection pump type ammonia nitrogen analyzer Download PDFInfo
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- CN103376239A CN103376239A CN2012101068553A CN201210106855A CN103376239A CN 103376239 A CN103376239 A CN 103376239A CN 2012101068553 A CN2012101068553 A CN 2012101068553A CN 201210106855 A CN201210106855 A CN 201210106855A CN 103376239 A CN103376239 A CN 103376239A
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title abstract description 18
- 238000002347 injection Methods 0.000 title abstract 4
- 239000007924 injection Substances 0.000 title abstract 4
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 28
- 238000005259 measurement Methods 0.000 claims description 45
- 239000012895 dilution Substances 0.000 claims description 34
- 238000010790 dilution Methods 0.000 claims description 34
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 28
- 230000008033 biological extinction Effects 0.000 claims description 27
- 238000002835 absorbance Methods 0.000 claims description 24
- 229910021529 ammonia Inorganic materials 0.000 claims description 15
- 239000012749 thinning agent Substances 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 238000005213 imbibition Methods 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 6
- 238000005375 photometry Methods 0.000 abstract description 8
- 230000031700 light absorption Effects 0.000 abstract 2
- 239000003085 diluting agent Substances 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 239000000243 solution Substances 0.000 description 12
- YGSDEFSMJLZEOE-UHFFFAOYSA-N Salicylic acid Natural products OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000012295 chemical reaction liquid Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 5
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 5
- 229960004889 salicylic acid Drugs 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 4
- VRZJGENLTNRAIG-UHFFFAOYSA-N 4-[4-(dimethylamino)phenyl]iminonaphthalen-1-one Chemical compound C1=CC(N(C)C)=CC=C1N=C1C2=CC=CC=C2C(=O)C=C1 VRZJGENLTNRAIG-UHFFFAOYSA-N 0.000 description 3
- 229960001860 salicylate Drugs 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical group OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 2
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical class ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 239000007853 buffer solution Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005206 flow analysis Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 241001597008 Nomeidae Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007979 citrate buffer Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012470 diluted sample Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003873 salicylate salts Chemical group 0.000 description 1
- -1 salicylic acid ion Chemical class 0.000 description 1
- 239000012898 sample dilution Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The invention relates to an injection pump type ammonia nitrogen analyzer, comprising a multiport valve, an injection pump and a light absorption spectrophotometer, wherein distribution ports of the multiport valve are respectively communicated with a flow path of a specimen, a flow path of a diluent, a flow path of at least one reagent, a container for photometric measurement and a drain line. By switching the communication relationship between the public port and distribution ports of the multiport valve, the injection pump at least sucks in the specimen and reagents, mixes the sucked liquids, and discharges the mixed liquid to the container for photometric measurement to be subjected to photometric measurement by the light absorption spectrophotometer.
Description
Technical field
The present invention relates to a kind of Environmental Water of measuring river, lake water, seawater, rainwater, underground water etc., and the syringe pump formula nh 3-n analyser of the contained ammonia nitrogen such as the fluid sample that in various tests, research, commercial production, produces, it can be applied to the fields such as investigation, inspection and management of water quality.
Background technology
Ammonia nitrogen (NH
3-N) with free ammonia (NH
3) or ammonium salt (NH
4 +) form is present in the water, both ratio of componentss depend on the pH value of water, when the pH value was higher, the ratio of free ammonia was higher, on the contrary then the ratio of ammonium salt is higher.Ammonia nitrogen pollutes water body can cause fish kills, or it is healthy to form the nitrite harm humans, and therefore, ammonia nitrogen is the important indicator of estimating water pollution and " from quiet " situation.
In order to measure the content of ammonia nitrogen, in the world and every country formulated respectively various standards, such as international standard ISO11732, Japanese Industrial Standards JJSKO0170-1 (2011) etc.The ammonia nitrogen measuring method of defined is the indophenol blue absorption photometry in Japanese Industrial Standards JISK0170-1 (2011).Its measuring principle is that ammonium ion and hypochlorite ion reaction generate chloramines, and the chloramines that generates further generates blue indophenols with salicylate (perhaps phenol) reaction.Thereby the concentration of utilizing absorption photometry to measure indophenols is carried out quantitatively ammonia nitrogen.The chemical equation of above-mentioned reaction is as shown in the formula shown in (1), (2).
NH
3+ClO
-＞NH
2Cl+OH
-……(1)
NH
2Cl+2[salicylic acid ion]-＞indophenols (derivant) ... (2)
In technology in the past, usually use system as shown in Figure 1 to carry out the measurement of ammonia nitrogen.Fig. 1 is that the salicylic acid that utilizes that illustrates in the past carries out the skeleton diagram of the formation of the system that the indophenol blue absorption photometry measures.Wherein, 1 is pump, and 2 are segmentation gas (air), 3 are reaction coil pipe (internal diameter 1mm, long 40cm), and 4 are calibration cell (temperature is 37 ℃), 5 are reaction coil pipe (internal diameter 1mm, long 50cm), 6 is that (wavelength is that 640nm～660nm), 7 is waste liquid to detecting device, S is sample or water, R1 is citrate buffer solution, and R2 is salicylic acid nitroso-five cyanogen network iron (III) acid sodium solutions, and R3 is sodium dichromate solution.
The principle of work of system shown in Figure 1 is as follows: mix successively salicylic acid nitroso-five cyanogen network iron (III) acid sodium solution and sodium dichromate solutions in the sample of continuous flow in tubule, they are reacted, measure near the absorbance of 640～660nm of reacting the blue compound that generates, thereby ammonia nitrogen is carried out quantitatively.
The prior art document
Non-patent literature
Document 1:ISO 11732 (mensuration-flow analysis of water quality-ammonia nitrogen (CFA and FIA) and spectral measurement method)
Document 2:JISK0710-1 (2011) (utilizes 1 one of the quality test of water method-Di of flow analysis: ammonia nitrogen)
Document 3:JISK0400-42-70 (2000) (quantitatively the-the 2nd one of water quality-ammonia: automatically absorption photometry)
Summary of the invention
The problem that invention will solve
Yet, utilize existing technology, the upper limit concentration of measurement only is 1～10mgN/L usually, the highlyest also can only reach 50mgN/L.There is not the problem of practicality in such measurement upper limit concentration when the Environmental Water such as measurement river, lake water, seawater, rainwater, underground water.But, during the fluid sample that in measuring industrial water drainage, various test, research, produces, just require higher measurement upper limit concentration.
In order to improve the measurement upper limit concentration of prior art, can adopt following two kinds of methods, yet all there is certain problem in any in following two kinds of methods.
[method A]
By the ratio that changes sample flow and reagent solution flow the concentration at the sample of analyser internal flow is reduced.
Yet, since the flow of sample and reagent all very little be below the 1ml/min, therefore needs can be reliably and are stably controlled the high price precision pump of throughput ratio.The dilution ratio that can access by this method in addition, also only has about 10 times.And because the blending ratio change reaction conditions of sample and reagent solution can change, therefore exist and to answer different mixing proportion and carry out the situation that measuring condition is set.
[method B]
Diluter was set before analyser.
Yet, owing to before analyser, added diluter, therefore, cost, all corresponding increases of area, service object being set, Measuring Time is also with elongated.
Solve the means of problem
The present invention makes in order to solve the problems of the technologies described above.
Syringe pump formula nh 3-n analyser involved in the present invention, comprise: the multiterminal valve, described multiterminal valve has a comm port and a plurality of distribution port, can switch the connected relation of aforementioned comm port and each aforementioned distribution port, when wherein any distributed port to be communicated with aforementioned comm port, all the other distributed port to the stream of comm port to be turned off; Syringe pump, described syringe pump has the imbibition bleed port, and this imbibition bleed port is communicated with the aforementioned comm port of aforementioned multiterminal valve; And extinction photometer, described extinction photometer has the absorbance measuring container, aforementioned a plurality of distribution ports of aforementioned multiterminal valve respectively with the stream of sample, the stream of thinning agent, the stream of the reagent of at least one, aforementioned absorbance measuring is communicated with container and drainage pipeline, the switching of the aforementioned comm port by aforementioned multiterminal valve and the connected relation of each aforementioned distribution port, aforementioned syringe pump imbitition, aforementioned liquids comprises sample and reagent at least, afterwards the liquid of aforementioned absorption mixed, again mixed liquid is expelled to aforementioned absorbance measuring with in the container, carries out absorbance measuring by described extinction photometer.Here, described liquid can also comprise the thinning agent for dilute sample except comprising sample and reagent.
One preferred configuration of syringe pump formula nh 3-n analyser involved in the present invention is, when the measured value of aforementioned extinction photometer exceeds the measurement range of aforementioned extinction photometer, aforementioned syringe pump formula nh 3-n analyser changes the dilution ratio of sample automatically, again sample is measured.
Another preferred configuration of syringe pump formula nh 3-n analyser involved in the present invention is that for measuring each time, the sample that aforementioned syringe pump is drawn and the total amount of thinning agent are constant.
An again preferred configuration of syringe pump formula nh 3-n analyser involved in the present invention is, also be provided with the stream of measurement standard liquid in the aforementioned syringe pump formula nh 3-n analyser, can carry out automatic calibration to syringe pump formula nh 3-n analyser by the measurement to aforementioned measurement standard liquid.
The another preferred configuration of syringe pump formula nh 3-n analyser involved in the present invention is, aforementioned syringe pump comprises plunger and plunger bushing, sidewall in the bottom of aforementioned plunger bushing is provided with the air entrance hole, aforementioned air entrance hole is connected with air pump, when the liquid to aforementioned absorption mixes, make aforementioned plunger drop to the below of aforementioned air entrance hole, in aforementioned syringe pump, import air from aforementioned air entrance hole by aforementioned air pump, thereby aforementioned liquids is fully stirred.
The another preferred configuration of syringe pump formula nh 3-n analyser involved in the present invention is, is connected be used to the ammonia absorbing agent of removing airborne ammonia at the air flow circuit of aforementioned air pump.
The effect of invention
According to syringe pump formula nh 3-n analyser of the present invention, because syringe pump can obtain high measuring accuracy with simple structure, therefore can carry out powerful Sample Dilution, measure upper limit concentration thereby can improve.In addition, owing in the situation of the replacing of not carrying out mechanism components, adjustment etc., just can freely change dilution ratio, therefore widely purposes can be applied to easily.Can also freely change as required the addition of reagent solution.
In addition, necessary a plurality of pumps in the technology in the past can be replaced by a syringe pump in the present invention, and the present invention do not need to carry out the maintenance work of loaded down with trivial details flow regulation operation and pipeline replacing etc.
Description of drawings
Fig. 1 is that the salicylic acid that utilizes that illustrates in the past carries out the skeleton diagram of the formation of the system that the indophenol blue absorption photometry measures.
Fig. 2 is the figure of formation that the first example of syringe pump formula nh 3-n analyser involved in the present invention is shown.
Embodiment
Fig. 2 is the figure of formation that the first example of syringe pump formula nh 3-n analyser involved in the present invention is shown.As shown in Figure 2, the syringe pump formula nh 3-n analyser of this example mainly comprises: multiterminal valve 8, syringe pump 9 has the extinction photometer 10 that absorbance measuring is used container 15, air pump 11, and ammonia absorbing agent 12.
Syringe pump 9 has plunger 13 and plunger bushing 14.The imbibition bleed port of syringe pump 9 is communicated with the public port of multiterminal valve 8, by plunger 13 moving up and down in plunger bushing 14, sucks or discharge liquid by the imbibition bleed port.The plunger 13 of syringe pump 9 is driven by accurate by stepper motor (not shown) and feed screw (not shown).The syringe pump formula nh 3-n analyser of this example is configured to, and for measuring each time, the total amount of the water of the sample that syringe pump 9 is drawn and dilution usefulness is constant.For example, when need not sample diluted (in the present invention this situation being defined as dilution ratio as 1 times), syringe pump 9 is drawn 100 parts sample, does not draw water; When dilution ratio was 2 times, syringe pump 9 was drawn 50 parts sample and 50 parts water; When dilution ratio was 10 times, syringe pump 9 was drawn 10 parts sample and 90 parts water; When dilution ratio was 100 times, syringe pump 9 was drawn 1 part sample and 99 parts water, and the rest may be inferred.Therefore, by the ratio between the amount of water of sample size and dilution usefulness is freely changed, can easily obtain different dilution ratios, thereby easily change the measurement range of syringe pump formula nh 3-n analyser.For example, the measurement range of reactive system～extinction photometer is designed to the words of 0～5mgN/L, sample is carried out 100 times dilution by syringe pump formula nh 3-n analyser of the present invention so, the measurement range of syringe pump formula nh 3-n analyser just can reach 500mgN/L, the concentration range that can measure much larger than prior art.Thus also as can be known, the measurement range of syringe pump formula nh 3-n analyser involved in the present invention is the measurement range of the employed extinction photometer of syringe pump formula nh 3-n analyser and the product of dilution ratio.Here the measurement range of so-called extinction photometer refers to, the measured value of extinction photometer within this scope the time linearity of measurement data good, measurement data can accurately be reacted the ammonia-nitrogen content of sample, and measured value exceeds the linearity of measurement data after this scope and descends, the ammonia-nitrogen content that measurement data can't the actual response sample.
Sidewall in the bottom of plunger bushing 14 is provided with the air entrance hole, and the air entrance hole is connected with air pump 11, can import air to syringe pump 9 is inner by air pump 11, is inhaled into syringe pump 9 interior liquid and fully stirs thereby make.The situation of the liquid in the syringe pump 9 being mixed by importing air has been described here, but the present invention is not limited thereto, other the method that can reach the purpose that makes the liquid mixing also is fine, such as can by rock, the mode such as vibrations mixes liquid, also can leave standstill a period of time to reach the purpose of mixing by the diffusion of liquid self.
In order to remove the airborne ammonia that is imported into, be connected with ammonia absorbing agent 12 at the air inlet stream of air pump 11.Although ammonia absorbing agent 12 is connected on the air inlet stream of air pump 11 in this example, however the present invention be not limited thereto, also ammonia absorbing agent 12 can be connected in the air flow circuit between air pump 11 and the air entrance hole.
Extinction photometer 1O comprises light source (not shown), photodetector (not shown) and absorbance measuring container 15.Absorbance measuring also uses as reactive tank with container 15 simultaneously, and its temperature is maintained at 55 ℃.Light source and photodetector are oppositely arranged with container 15 across absorbance measuring, and the light transmission absorbance measuring that light source sends is accepted by photodetector with the reaction liquid in the container 15, thereby the absorbance of the indophenols that generate in the reaction liquid is measured.
Below, the measurement action of the syringe pump formula nh 3-n analyser of this example is described.
The syringe pump formula nh 3-n analyser basis measurement result in the past that this example is related, to the measurement range of syringe pump formula nh 3-n analyser, namely the dilution ratio of sample is set.For example, can be according to the measurement result of the ammonia-nitrogen content of the sample of last time, setting can detect the suitable dilution ratio of this concentration, also can set suitable dilution ratio according to for several times the mean value of measurement result of ammonia-nitrogen content of sample before.Certainly, operating personnel also can set dilution ratio by manual operation.
At first, multiterminal valve 8 being switched the public port that makes multiterminal valve 8 is connected with the stream of sample, the stream of thinning agent, the stream of the first reagent, the stream of the second reagent and the stream of the 3rd reagent successively.When the public port of multiterminal valve 8 is communicated with each stream, the downward motion of the plunger 13 by syringe pump 9, the liquid in each stream is inhaled in the syringe pump 9.Under this example, preferred acquisition order is sample, water, buffer solution, salicylate solution, hypochlorite solutions.Yet the present invention is not limited thereto, and also can gather in any order various liquid, both can as long as gathered the needed whole liquid of measurement.Here, the situation that water is diluted sample has been described, but it should be understood that, the related syringe pump formula nh 3-n analyser of this example can be measured the sample that is not diluted equally, namely also can under being 1 times situation, dilution ratio work, the public port of multiterminal valve 8 is not communicated with the stream of thinning agent at this moment, does not draw the water of dilution usefulness from the stream of thinning agent.
Then, multiterminal valve 8 is switched to the common port and the state that absorbance measuring is connected with container 15 of multiterminal valve 8, further drop at the plunger 13 that makes syringe pump 9 under this state plunger bushing 14 the air entrance hole below.Because therefore absorbance measuring, does not have new liquid and is inhaled in the syringe pump 9 with there not being reaction liquid to be measured in the container 15 in this process at this moment.Afterwards, 9 inside imports air from the air entrance hole to syringe pump by air pump 11, utilizes the various liquid in the air sparging pump 9 that is imported into fully to be stirred.Because the ammonia absorbing agent 12 that the airborne ammonia that is imported into is connected on the air inlet stream of air pump 11 absorbs, so can guarantee that the airborne ammonia that is imported into can not have influence on measurement result.In importing the process of air, can make public port that multiterminal valve 8 maintains multiterminal valve 8 and absorbance measuring with the state that container 15 is connected, make the air that is imported into be discharged to absorbance measuring usefulness container 15.But for fear of the air that is imported into measurement result is impacted, preferable case is, the plunger 13 of syringe pump 9 drop to plunger bushing 14 the air entrance hole below after, and begin to import before the air, multiterminal valve 8 is switched to the state that the public port of multiterminal valve 8 is connected with drainage pipeline, the air that is imported into is discharged from drainage pipeline, liquid in syringe pump 9 is fully stirred and after stopping to import air, the state that the public port that again multiterminal valve 8 is switched back multiterminal valve 8 and absorbance measuring are connected with container 15.
Then, the plunger 13 of syringe pump 9 is moved upward, the reaction liquid that the quilts in the syringe pump 9 have fully been stirred is expelled to the absorbance measuring of extinction photometer 10 with in the container 15.Reaction liquid reacts under 55 ℃ environment, generates indophenols, utilizes light source and photodetector that the absorbance of the indophenols of generation is measured, thereby the ammonia-nitrogen content in the sample is carried out quantitatively.The measured value that will directly obtain from extinction photometer and the product of dilution ratio are as the measurement result of the ammonia-nitrogen content of sample.
Detect by above-mentioned step, when the measured value of extinction photometer exceeded the measurement range of extinction photometer, syringe pump formula nh 3-n analyser of the present invention can change the dilution ratio of sample automatically, repeated above step and again sample was measured.For example, syringe pump formula nh 3-n analyser of the present invention can be configured to have 1 times, the duty of the multiple dilution ratios such as 2 times, 5 times, 10 times, 20 times, 50 times, 100 times.Before measuring beginning, syringe pump formula nh 3-n analyser selects a certain suitable dilution ratio to measure in above dilution ratio according to measurement result in the past, when the measured value of the extinction photometer of measuring with this selecteed dilution ratio exceeds the measurement range of extinction photometer, syringe pump formula nh 3-n analyser can automatically be set dilution ratio for the dilution ratio than the next stage that selected dilution ratio is high before, again sample is measured, until obtain falling into till the measurement result in the measurement range of syringe pump formula nh 3-n analyser.
The above has illustrated the situation that improves step by step dilution ratio, but the present invention is not limited to this, syringe pump formula nh 3-n analyser of the present invention also can be configured to, and can at random select arbitrary grade high dilution ratio of dilution ratio according to the size of the measured value of the extinction photometer of the measurement range that has exceeded extinction photometer.Syringe pump formula nh 3-n analyser of the present invention can also be configured to carry out work with dilution ratio arbitrarily, exceeded at measured value in the situation of measurement range of extinction photometer, can select higher than present dilution ratio arbitrarily dilution ratio to measure according to the size of this measured value next time.
In this example, be provided with the stream of measurement standard liquid, by the measurement to measurement standard liquid, can carry out automatic calibration to syringe pump formula nh 3-n analyser.
Although only used a multiterminal valve in above-mentioned example, the present invention is not limited thereto, also can use two or more multiterminal valves.In a variant embodiment of the present invention, can use two multiterminal valves, wherein the first multiterminal valve corresponding with the multiterminal valve 8 in the first real form has 6 and distributes ports and 1 public port.6 of the first multiterminal valve distribute ports except respectively with the absorbance measuring of the stream of the stream of the stream of sample, thinning agent, measurement standard liquid, extinction photometer is communicated with container and drainage pipeline, remaining 1 distribution port is communicated with the public port of another multiterminal valve (hereinafter referred to as the second multiterminal valve).The second multiterminal valve has 3 and distributes port and 1 public port, and 3 of the second multiterminal valve are distributed port to be communicated with the stream of the first reagent, the stream of the second reagent and the stream of the 3rd reagent respectively.When gathering reagent, the public port that the first multiterminal valve is maintained at the first multiterminal valve always with and the state of the distribution port connection that is connected of the public port of the second multiterminal valve, gather each reagent by the connected state that switches the second multiterminal valve.
Except above-mentioned difference, the formation of above-mentioned variant embodiment and action are identical with the first example, no longer repeat at this.
In addition, the work of syringe pump formula nh 3-n analyser involved in the present invention is controlled by a control system (not shown), this control system for example can be the computer that comprises central processing unit, and the cooperation of the hardware by being stored in software in this computer and this computer is controlled the work of syringe pump formula nh 3-n analyser.
In addition; although in the present invention two examples have been carried out concrete description; but it should be noted that the present invention is not limited by above-mentioned two examples; so long as do not exceed change, replacement or the combination of aim of the present invention; for example; used the reagent more than two kinds or four kinds etc., all within protection scope of the present invention.
Claims (6)
1. a syringe pump formula nh 3-n analyser is characterized in that, comprising:
The multiterminal valve, described multiterminal valve has a comm port and a plurality of distribution port, can switch the connected relation of aforementioned comm port and each aforementioned distribution port, when wherein any distributed port to be communicated with aforementioned comm port, all the other distributed port to the stream of comm port to be turned off;
Syringe pump, described syringe pump has the imbibition bleed port, and this imbibition bleed port is communicated with the aforementioned comm port of aforementioned multiterminal valve; And
Extinction photometer, described extinction photometer has the absorbance measuring container,
Aforementioned a plurality of distribution ports of aforementioned multiterminal valve are communicated with container and drainage pipeline with the stream of the stream of sample, thinning agent, at least one stream, the aforementioned absorbance measuring of reagent respectively, the switching of the aforementioned comm port by aforementioned multiterminal valve and the connected relation of each aforementioned distribution port, aforementioned syringe pump imbitition, aforementioned liquids comprises sample and reagent at least, afterwards the liquid of aforementioned absorption mixed, again mixed liquid is expelled to aforementioned absorbance measuring with in the container, carries out absorbance measuring by described extinction photometer.
2. syringe pump formula nh 3-n analyser as claimed in claim 1 is characterized in that,
When the measured value of aforementioned extinction photometer exceeded the measurement range of aforementioned extinction photometer, aforementioned syringe pump formula nh 3-n analyser changed the dilution ratio of sample automatically, again sample is measured.
3. syringe pump formula nh 3-n analyser as claimed in claim 1 is characterized in that, for measuring each time, the sample that aforementioned syringe pump is drawn and the total amount of thinning agent are constant.
4. syringe pump formula nh 3-n analyser as claimed in claim 1 is characterized in that,
Also be provided with the stream of measurement standard liquid in the aforementioned syringe pump formula nh 3-n analyser, can carry out automatic calibration to syringe pump formula nh 3-n analyser by the measurement to aforementioned measurement standard liquid.
5. such as each the described syringe pump formula nh 3-n analyser in the claim 1 to 4, it is characterized in that,
Aforementioned syringe pump comprises plunger and plunger bushing, sidewall in the bottom of aforementioned plunger bushing is provided with the air entrance hole, aforementioned air entrance hole is connected with air pump, when the liquid to aforementioned absorption mixes, make aforementioned plunger drop to the below of aforementioned air entrance hole, in aforementioned syringe pump, import air from aforementioned air entrance hole by aforementioned air pump, thereby aforementioned liquids is fully stirred.
6. syringe pump formula nh 3-n analyser as claimed in claim 5 is characterized in that,
Air flow circuit at aforementioned air pump is connected be used to the ammonia absorbing agent of removing airborne ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101068553A CN103376239A (en) | 2012-04-12 | 2012-04-12 | Injection pump type ammonia nitrogen analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101068553A CN103376239A (en) | 2012-04-12 | 2012-04-12 | Injection pump type ammonia nitrogen analyzer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062167A (en) * | 2014-06-23 | 2014-09-24 | 青岛普仁仪器有限公司 | Automatic online sample dilution and mixing device and mixing method |
| CN105388117A (en) * | 2014-09-01 | 2016-03-09 | 恩德莱斯和豪瑟尔测量及调节技术分析仪表两合公司 | Analyzer |
| CN110514610A (en) * | 2019-09-30 | 2019-11-29 | 南京润驰工程技术有限公司 | A kind of silicate measurement device and measurement method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000266677A (en) * | 1999-01-14 | 2000-09-29 | Shimadzu Corp | Analyzer for nitrogen compound, phosphorus compound and organic contaminant |
| CN201392346Y (en) * | 2009-01-21 | 2010-01-27 | 马三剑 | Colorimetry ammonia nitrogen on-line automatic monitoring device |
| CN101907558A (en) * | 2010-03-31 | 2010-12-08 | 浙江环茂自控科技有限公司 | Total organic carbon online analyzer and method for analyzing total organic carbon |
| CN102243244A (en) * | 2011-04-13 | 2011-11-16 | 北京吉天仪器有限公司 | Automatic analyzer for total nitrogen in solution and analysis method thereof |
| CN102374989A (en) * | 2010-08-20 | 2012-03-14 | 北京吉天仪器有限公司 | Automatic analyzer for determining ammonia nitrogen in water and automatic analytic method thereof |
-
2012
- 2012-04-12 CN CN2012101068553A patent/CN103376239A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000266677A (en) * | 1999-01-14 | 2000-09-29 | Shimadzu Corp | Analyzer for nitrogen compound, phosphorus compound and organic contaminant |
| CN201392346Y (en) * | 2009-01-21 | 2010-01-27 | 马三剑 | Colorimetry ammonia nitrogen on-line automatic monitoring device |
| CN101907558A (en) * | 2010-03-31 | 2010-12-08 | 浙江环茂自控科技有限公司 | Total organic carbon online analyzer and method for analyzing total organic carbon |
| CN102374989A (en) * | 2010-08-20 | 2012-03-14 | 北京吉天仪器有限公司 | Automatic analyzer for determining ammonia nitrogen in water and automatic analytic method thereof |
| CN102243244A (en) * | 2011-04-13 | 2011-11-16 | 北京吉天仪器有限公司 | Automatic analyzer for total nitrogen in solution and analysis method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062167A (en) * | 2014-06-23 | 2014-09-24 | 青岛普仁仪器有限公司 | Automatic online sample dilution and mixing device and mixing method |
| CN105388117A (en) * | 2014-09-01 | 2016-03-09 | 恩德莱斯和豪瑟尔测量及调节技术分析仪表两合公司 | Analyzer |
| CN110514610A (en) * | 2019-09-30 | 2019-11-29 | 南京润驰工程技术有限公司 | A kind of silicate measurement device and measurement method |
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