CN104111252B - A kind of novel ammonia gas-sensing electrode - Google Patents
A kind of novel ammonia gas-sensing electrode Download PDFInfo
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- CN104111252B CN104111252B CN201310138474.8A CN201310138474A CN104111252B CN 104111252 B CN104111252 B CN 104111252B CN 201310138474 A CN201310138474 A CN 201310138474A CN 104111252 B CN104111252 B CN 104111252B
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Abstract
A kind of novel ammonia gas-sensing electrode of disclosure, including external electrode housing, electrode film cap, photoelectric sensor, amino molecule indicator, controller and electrode cap, described electrode film cap is arranged on external electrode shell one end, and is provided with the selectivity breathable films allowing ammonia to pass through.After the amino molecule in water sample or remaining form compose the amino molecule throughout curve breathable films entrance amino molecule indicator that the ammonia nitrogen deposited is generated by reaction, amino molecule indicator generation chromogenic reaction；Photoelectric sensor produces corresponding electric signal according to transmitted intensity change；The power of described controller regulation optical signal, and be filtered amplifying to the signal of telecommunication produced, the signal of telecommunication transmission after processing to processor, processor obtain the concentration of ammonia nitrogen in water sample according to the signal of telecommunication；Described electrode cap is arranged at the other end of described external electrode housing, for described photoelectric sensor is sealed in described external electrode enclosure interior.By this ammonia gas-sensing electrode, it is possible to effectively detect the ammonia-nitrogen content in water sample.
Description
Technical field
The present invention relates to field of water quality detection, particularly relate to a kind of novel ammonia gas-sensing electrode.
Background technology
When water quality is detected, often use ammonia gas-sensing electrode, to realize ammonia nitrogen in water is contained
The detection of amount.
Ammonia gas-sensing electrode is when measuring the content of ammonia nitrogen in water sample, simple to operate, need not carry out pre-to water sample
Process, eliminate the operation of flocculation sediment and filtration, saved analysis time, be suitable for high-volume water sample
The mensuration of middle ammonia-nitrogen content, particularly with the complicated water sample of high concentration, has superiority when detection, tool
For the advantage polluted less, response speed is fast.
Therefore, along with going deep into water quality detection, the development of ammonia gas-sensing electrode also becomes a research heat
Point.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of novel ammonia gas-sensing electrode, specific embodiment party
Case is as follows:
A kind of novel ammonia gas-sensing electrode, including:
External electrode housing；
Being arranged on the electrode film cap of described external electrode shell one end, described electrode film cap is provided with permission ammonia
The selectivity breathable films passed through；
It is arranged on the photoelectric sensor of described external electrode enclosure interior, and fills out inside described photoelectric sensor
The amino molecule indicator filled, described photoelectric sensor produces optical signal, to form transmission light, and is working as ammonia
Gas enters described amino molecule indicator through described selectivity breathable films, causes described amino molecule indicator
There is chromogenic reaction, before and after described photoelectric sensor is according to chromogenic reaction, the change that optical signal transmissive is strong and weak
Produce the corresponding signal of telecommunication；
It is connected with described photoelectric sensor, controls the power of the optical signal that described photoelectric sensor produces,
It is filtered the described signal of telecommunication amplifying, and the signal of telecommunication after described filter and amplification is transmitted to processor
Controller, described processor, after receiving the described signal of telecommunication, calculates amino molecule according to the described signal of telecommunication and refers to
Show absorbance after the colour developing of agent, to obtain corresponding ammonia nitrogen concentration；
It is arranged on the other end of described external electrode housing, described photoelectric sensor is sealed in described external electrode
The electrode cap of enclosure interior.
Preferably, described photoelectric sensor includes:
Photoelectric sensor housing；
It is arranged on described photoelectric sensor shell one end, produces the light source of optical signal；
Being arranged on the described photoelectric sensor housing other end, the color in described amino molecule indicator becomes
During change, experience the strong and weak change of described optical signal transmissive, and produce corresponding according to the change of described transmission light
The photoelectric detector of the signal of telecommunication.
Preferably, described controller includes:
It is connected with described light source, according to the light intensity regulating information received, regulates described light signal strength
Light source controller；
Be connected with described photoelectric detector, the signal of telecommunication that described photoelectric detector is produced filter and
Processing and amplifying, and the signal of telecommunication transmission after processing is to the photo controller of described processor.
Preferably, described light source controller includes:
DAC actuator.
Preferably, described photo controller includes:
The described signal of telecommunication producing described photoelectric detector is amplified the operational amplifier processed；
It is connected with described operational amplifier, the signal of telecommunication after amplifying is filtered the wave filter processed.
Preferably, described controller is arranged on described photoelectric sensor inside or is arranged on described external electrode shell
The outside of body.
Preferably, described light source is:
Secondary color light source and be arranged on the monochromator outside described secondary color light source, or LED.
Preferably, described photoelectric detector is:
Silicon photo diode.
Novel ammonia gas-sensing electrode disclosed in the present application, including external electrode housing, electrode film cap, photoelectricity
Sensor, amino molecule indicator, controller and electrode cap, wherein, described electrode film cap is arranged on described
One end of external electrode housing, and it is provided with the selectivity breathable films allowing ammonia to pass through.When to be detected
The ammonia that water sample ammonia nitrogen and alkali reaction produce enters the instruction of described amino molecule through described selectivity breathable films
After agent, described amino molecule indicator generation chromogenic reaction can be caused；Described photoelectric sensor produces optical signal,
And the change of the transmitted intensity caused is changed according to the color of described amino molecule indicator, produce corresponding
The signal of telecommunication；Described controller is for regulating the power of optical signal, and filters the described signal of telecommunication produced
Ripple amplifies, and transmits the signal of telecommunication after filter and amplification to processor, in order to described processor obtains in water sample
The concentration of ammonia nitrogen；Described electrode cap arranges the other end of described external electrode housing, for by described photoelectric transfer
Sensor is sealed in described external electrode enclosure interior.By the ammonia gas-sensing electrode that this is novel, it is possible to effectively detect
Go out the ammonia-nitrogen content in water sample.
It addition, for electrochemical sensor, the photoelectric sensor that the application is applied has stronger
Stability, and longer service life, improve the quality of ammonia gas-sensing electrode.Further, described photoelectricity
Sensor is when detecting, and in the range of measurement, linear dependence is more preferable, and beneficially processor obtains more smart
True measurement result.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of novel ammonia gas-sensing electrode disclosed in the embodiment of the present invention；
Fig. 2 is the structure of photoelectric sensor in a kind of novel ammonia gas-sensing electrode disclosed in the embodiment of the present invention
Schematic diagram；
Fig. 3 is the annexation schematic diagram of a kind of photoelectric sensor disclosed in the embodiment of the present invention and controller；
Fig. 4 is the annexation signal of the embodiment of the present invention another photoelectric sensor disclosed and controller
Figure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
In order to realize the detection of ammonia nitrogen concentration in water sample, this programme discloses a kind of quick electricity of novel ammonia
Pole, structural representation shown in Figure 1, described novel ammonia gas-sensing electrode includes: external electrode housing 1,
Electrode film cap 2, photoelectric sensor 3, amino molecule indicator, controller 4 and electrode cap 5.
Wherein, described electrode film cap 2 is arranged on one end of described external electrode housing, described electrode film cap 2
On be provided with and allow the selectivity breathable films that passes through of ammonia.Owing to this selectivity breathable films allows ammonia
Passing through, no thoroughfare for water and ion, when the amino molecule in water sample or compose, with remaining form, the ammonia nitrogen deposited and pass through
Reaction can generate ammonia, as added alkaline solution in water sample to be detected, such as NaOH solution, KOH
Ammonium ion NH after solution, in water sample4 +Ammonia NH can be changed into3Effusion, breathes freely through described selectivity
Thin film, enters inside described ammonia gas-sensing electrode, it is simple to it is detected by described photoelectric sensor 3.
Described photoelectric sensor 3 is arranged on the inside of described external electrode housing, and, described photoelectric sensing
The inside of device 3 is filled with amino molecule indicator, when ammonia passes through the selection arranged on described electrode film cap 2
Property breathable films when entering described amino molecule indicator, described amino molecule indicator can be caused to occur colour developing anti-
Should, i.e. there is the change of color.Described photoelectric sensor 3 is used for producing optical signal, to form transmission light,
And when ammonia is through described selectivity breathable films, enters described amino molecule indicator, cause described ammonia
When molecular indicators occurs display reaction, before and after described photoelectric sensor 3 is according to chromogenic reaction, transmission light
The change corresponding signal of telecommunication of generation that signal is strong and weak.
Described amino molecule indicator and the amino molecule generation chromogenic reaction of throughout curve breathable films, can lead
Cause color changes, and the depth of color is directly proportional to through amino molecule amount, therefore, is become by described color
Change can reflect the concentration of ammonia nitrogen in the content of amino molecule, and then reaction water body.It addition, this colour developing is anti-
Should be reversible reaction, say, that when the amino molecule content in water sample is less, amino molecule can be by choosing
Selecting property breathable films enters in described water sample.
Described controller 4 is connected with described photoelectric sensor 3, is used for controlling described photoelectric sensor 3
The power of the optical signal produced, is filtered the described signal of telecommunication amplifying, and by after described filter and amplification
The signal of telecommunication transmits to processor, and wherein, described processor realizes in a variety of forms, for example, it is possible to be single
Sheet machine, PC(personal computer, personal computer), industrial computer etc..Described processor is receiving
After the described signal of telecommunication, calculate absorbance after the colour developing of amino molecule indicator according to the described signal of telecommunication, to obtain
Take corresponding ammonia nitrogen concentration, it is achieved the detection to water sample.
Described electrode cap 5 is arranged on the other end of described external electrode housing, for by described photoelectric sensor 3
It is sealed in the inside of described external electrode housing 3, to avoid water sample to be detected to enter in external electrode housing 3,
Affect accuracy of detection.
Novel ammonia gas-sensing electrode disclosed in the present application, including external electrode housing, electrode film cap, photoelectricity
Sensor, amino molecule indicator, controller and electrode cap, wherein, described electrode film cap is arranged on described
One end of external electrode housing, and it is provided with the selectivity breathable films allowing ammonia to pass through.When to be detected
Water sample enters described amino molecule by the ammonia produced with alkali reaction through described selectivity breathable films and indicates
After agent, described amino molecule indicator generation chromogenic reaction can be caused；Described photoelectric sensor produces optical signal,
And the change of the transmitted intensity caused is changed according to the color of described amino molecule indicator, produce corresponding
The signal of telecommunication；Described controller is for regulating the power of optical signal, and filters the described signal of telecommunication produced
Ripple amplifies, and transmits the signal of telecommunication after filter and amplification to processor, in order to described processor obtains in water sample
The concentration of ammonia nitrogen；Described electrode cap arranges the other end of described external electrode housing, for by described photoelectric transfer
Sensor is sealed in described external electrode enclosure interior.By the ammonia gas-sensing electrode that this is novel, it is possible to effectively detect
Go out the ammonia-nitrogen content in water sample.
It addition, for electrochemical sensor, the photoelectric sensor that the application is applied has stronger
Stability, and longer service life, improve the quality of ammonia gas-sensing electrode.Further, described photoelectricity
Sensor is when detecting, and in the range of measurement, linear dependence is more preferable, and beneficially processor obtains more smart
True measurement result.
Owing to the chromogenic reaction of amino molecule Yu amino molecule indicator is reversible reaction, when the amino molecule in water sample
When content is less, amino molecule can be entered in water sample by selectivity breathable films.According to this principle, can be right
Ammonia gas-sensing electrode disclosed by the invention is carried out, and when cleaning, described ammonia gas-sensing electrode is positioned over ammonia and divides
In the solution that sub-concentration is relatively low, then the amino molecule in electrode can enter in solution, completes to clean.
Further, the structural representation of photoelectric sensor shown in Figure 2, described photoelectric sensor 3
Including: photoelectric sensor housing 31, light source 32 and photoelectric detector 33.
Wherein, described light source 32 is arranged on one end of described photoelectric sensor housing 31, is used for producing light
Signal.
Described photoelectric detector 33 is arranged on the other end of described photoelectric sensor housing 31, at described ammonia
When the color of molecular indicators changes, described photoelectric detector 33 is used for experiencing described optical signal transmissive
Strength Changes, and according to described transmitted intensity change produce the corresponding signal of telecommunication, in order to processor exists
After receiving the described signal of telecommunication, calculate extinction after the colour developing of described amino molecule indicator according to the described signal of telecommunication
Degree, thus obtain the ammonia nitrogen concentration in water sample.
Structural representation shown in Figure 2, described photoelectric sensor housing 31 is that a centre has half
The cylinder of circumferential notch, cylindrical rest is filled with amino molecule indicator, described light source 32 He
Photoelectric detector 33 decibels arranges the two ends with described breach.
Described light source 32 is with LED(Light Emitting Diode, light emitting diode) form realize,
Or, use secondary color light source and the monochromator realization being arranged on outside described secondary color light source.Described smooth electric-examination
Survey device 33 generally silicon photo diode, it is possible to convert optical signal into the corresponding signal of telecommunication.Certainly, described
Light source 32 and photoelectric detector 33 can also other forms realize, and this is not limited by this programme.
It addition, in described photoelectric sensor 3, also include seal member, see Fig. 2, described sealing
Part includes: end face seal lid 34, end face seal pad 35, light source isolation pad 36, seal minipad 37,
O shape circle 38, photosensitive isolation pad 39, for avoiding the amino molecule filled in described photoelectric sensor 3 to refer to
Show that agent is flowed out, and water sample flows into.It addition, also include the transparent glass covering described photoelectric detector 33
Sheet 30.
Further, described controller 4 includes light source controller 41 and photo controller 42, wherein, institute
State light source controller 41 to be connected with described light source 32, for regulating information according to the light source received,
Regulate the intensity of the optical signal that described light source produces；Described photoelectric detector 33 and described photo controller 42
Being connected, described photo controller 42 was carried out for the signal of telecommunication producing described photoelectric detector 33
Filter and processing and amplifying, and the signal of telecommunication transmission after processing is to described processor.
Described light source controller 41 includes: DAC(digital-to-analogue converte, digital-to-analog
Transducer) actuator, by the operation to described DAC actuator, it is possible to regulate described DAC regulation
The electric current of device output, and then control the intensity of the optical signal that described light source 32 sends.At needs regulation light letter
Number intensity time, described light source controller 31 can be directly adjusted by staff, it is possible to process
Device operates, so that described processor produces regulation information, and sends to described light source controller 31,
Realize the regulation of optical signal.
Described photo controller 42 includes: operational amplifier and wave filter, and described operational amplifier is for right
The described signal of telecommunication that described photoelectric detector 33 produces is amplified processing, described wave filter and described computing
Amplifier is connected, and for being filtered processing to the signal of telecommunication after amplifying, thus realizes described photoelectricity
The process of the signal of telecommunication that detector 33 produces.It addition, when the signal of telecommunication is processed by needs, work people
Described photo controller 42 can directly be operated by member, it is possible to is operated by described processor, by
Described processor produces corresponding regulation information and transmits to described photo controller, it is achieved read described photosensitive
The regulation of controller.
It addition, the annexation of described controller 4 and photoelectric sensor 3 can realize in a variety of forms, institute
State controller 4 and be arranged on the inside of described photoelectric sensor 3, or, described controller 4 is arranged on institute
State the outside of external electrode housing 1.
For example, with reference to the annexation schematic diagram of the photoelectric sensor 3 shown in Fig. 3 with controller 4, institute
State controller and be arranged on the outside of described external electrode housing 1, realized and described photoelectric sensor 3 by wire
Connection, wherein, described light source controller 41 is connected with described light source 32, described photo controller
42 are connected with described photoelectric detector 33, and, described controller 4 is connected with processor.This
In the case of, when water sample is detected, generally external electrode housing 1 part of ammonia gas-sensing electrode is placed
In water sample to be detected, controller is placed on outside water sample.In described photoelectric sensor 3, fill
There is amino molecule indicator 6.
It addition, photoelectric sensor 3 shown in Figure 4 and the annexation schematic diagram of controller 4, institute
State controller 4 and be arranged on the inside of described photoelectric sensor 3, wherein, described light source controller 41 and institute
Stating light source 32 to be connected, described photo controller 42 is connected with described photoelectric detector 33.Described
In photoelectric sensor 3, it is filled with amino molecule indicator 6.
This programme discloses a kind of novel ammonia gas-sensing electrode, described ammonia gas-sensing electrode include external electrode housing,
Electrode film cap, photoelectric sensor, amino molecule indicator, controller and electrode cap, wherein, described electrode
Film cap is arranged on one end of described external electrode housing, and is provided with the selectivity allowing ammonia to pass through and breathes freely thin
Film.The ammonia produced when water sample to be detected and alkali reaction enters described through described selectivity breathable films
After amino molecule indicator, the generation chromogenic reaction of described amino molecule indicator can be caused；Described photoelectric sensing
Device produces optical signal, and changes the change of the transmitted intensity caused according to the color of described amino molecule indicator
Change, produce the corresponding signal of telecommunication；Described controller is for regulating the power of optical signal, and the institute to generation
State the signal of telecommunication to be filtered amplifying, the signal of telecommunication after filter and amplification is transmitted to processor, in order to described place
Reason device obtains the concentration of ammonia nitrogen in water sample according to the described signal of telecommunication；Described electrode cap is arranged on described external electrode
The other end of housing, for being sealed in described external electrode enclosure interior by described photoelectric sensor.By this
Ammonia gas-sensing electrode, it is possible to effectively detect the ammonia-nitrogen content in water sample.
It addition, for electrochemical sensor, the photoelectric sensor that the application is applied has stronger
Stability, and longer service life, improve the quality of ammonia gas-sensing electrode, advantageously reduce water sample
The cost of the detection of middle ammonia nitrogen.Further, described photoelectric sensor, when detecting, measures scope interior lines
Property dependency more preferable, beneficially processor obtains more accurate measurement result, and test result is accurately and reliably.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (7)
1. an ammonia gas-sensing electrode, it is characterised in that including:
External electrode housing；
Being arranged on the electrode film cap of described external electrode shell one end, described electrode film cap is provided with permission ammonia
The selectivity breathable films passed through；
It is arranged on the photoelectric sensor of described external electrode enclosure interior, and fills out inside described photoelectric sensor
The amino molecule indicator filled, described photoelectric sensor produces optical signal, to form transmission light, and is working as ammonia
Gas enters described amino molecule indicator through described selectivity breathable films, causes described amino molecule indicator
There is chromogenic reaction, before and after described photoelectric sensor is according to chromogenic reaction, the change that optical signal transmissive is strong and weak
Produce the corresponding signal of telecommunication；
It is connected with described photoelectric sensor, controls the power of the optical signal that described photoelectric sensor produces,
It is filtered the described signal of telecommunication amplifying, and the signal of telecommunication after described filter and amplification is transmitted to processor
Controller, described processor, after receiving the described signal of telecommunication, calculates amino molecule according to the described signal of telecommunication and refers to
Show absorbance after the colour developing of agent, to obtain corresponding ammonia nitrogen concentration；
It is arranged on the other end of described external electrode housing, described photoelectric sensor is sealed in described external electrode
The electrode cap of enclosure interior；
Described photoelectric sensor includes:
Photoelectric sensor housing；
It is arranged on described photoelectric sensor shell one end, produces the light source of optical signal；
Being arranged on the described photoelectric sensor housing other end, the color in described amino molecule indicator becomes
During change, experience the strong and weak change of described optical signal transmissive, and produce corresponding according to the change of described transmission light
The photoelectric detector of the signal of telecommunication.
Ammonia gas-sensing electrode the most according to claim 1, it is characterised in that described controller includes:
It is connected with described light source, according to the light intensity regulating information received, regulates described light signal strength
Light source controller；
Be connected with described photoelectric detector, the signal of telecommunication that described photoelectric detector is produced filter and
Processing and amplifying, and the signal of telecommunication transmission after processing is to the photo controller of described processor.
Ammonia gas-sensing electrode the most according to claim 2, it is characterised in that described light source controller bag
Include:
DAC actuator.
Ammonia gas-sensing electrode the most according to claim 2, it is characterised in that described photo controller bag
Include:
The described signal of telecommunication producing described photoelectric detector is amplified the operational amplifier processed；
It is connected with described operational amplifier, the signal of telecommunication after amplifying is filtered the wave filter processed.
Ammonia gas-sensing electrode the most according to claim 1, it is characterised in that described controller is arranged on
Described photoelectric sensor is internal or is arranged on the outside of described external electrode housing.
Ammonia gas-sensing electrode the most according to claim 1, it is characterised in that described light source is:
Secondary color light source and be arranged on the monochromator outside described secondary color light source, or LED.
Ammonia gas-sensing electrode the most according to claim 1, it is characterised in that described photoelectric detector is:
Silicon photo diode.
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| CN201310138474.8A CN104111252B (en) | 2013-04-19 | 2013-04-19 | A kind of novel ammonia gas-sensing electrode |
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| CN104535506A (en) * | 2015-01-30 | 2015-04-22 | 四川清和科技有限公司 | Drainage basin ammonia-nitrogen concentration detection method |
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