CN202002905U - Electrogenerated chemiluminescence transient state analyzer - Google Patents
Electrogenerated chemiluminescence transient state analyzer Download PDFInfo
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- CN202002905U CN202002905U CN2011200764572U CN201120076457U CN202002905U CN 202002905 U CN202002905 U CN 202002905U CN 2011200764572 U CN2011200764572 U CN 2011200764572U CN 201120076457 U CN201120076457 U CN 201120076457U CN 202002905 U CN202002905 U CN 202002905U
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- electrogenerated chemiluminescence
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Abstract
The utility model relates to an electrogenerated chemiluminescence transient state analyzer, which aims to conveniently acquire various kinetic parameters in a stable state and a transient state. The electrogenerated chemiluminescence transient state analyzer consists of an electrogenerated chemiluminescence instrument (10), an oscilloscope (20) and an electrochemical working station (30), wherein the electrogenerated chemiluminescence instrument (10) comprises an electrode system (11) and a rate sampling module component (13); and the electrode system (11) is provided with a free control switch (12) for freely connecting and disconnecting a working electrode and a pair electrode of the electrode system (11) so as to control current and potential, and switching between the stable state and the transient state of the electrode system can be realized.
Description
Technical field
The utility model relates to the check and analysis instrument, particularly electrogenerated chemiluminescence analysis of transient process instrument.
Background technology
Electrochemiluminescdetection detection is to develop a kind of rapidly novel detection method in recent years, and it combines electrochemical analysis with chemiluminescence detection, can be used for tests such as clinical analysis and medicine, virus, immunity.The electrochemiluminescdetection detection instrument is that combined with electrochemical analysis and chemiluminescence detection are in many test interfaces of one, many analytical parameters, many control assemblies system integration instrument.The electrogenerated chemiluminescence instrument can produce multiple frequency, the voltage pulse signal of amplitude and EDM Generator of Adjustable Duty Ratio.Can measure the light intensity of any Weak-luminescence reaction.Electroluminescence can be used for chemiluminescence reaction mechanism, inorganic metal analysis, metal network and contain research work such as thing structure analysis.Usually, electrogenerated chemiluminescence instrument complete machine structure includes five parts: electrode system, pulse signal generator, photoelectric conversion section, galvanoluminescence pond, recording section.Electrode system and signal generator are the piths of electrogenerated chemiluminescence instrument, also are the key characters that the electrogenerated chemiluminescence instrument is different from Chemiluminescence Apparatus.At present, the analyser that all be 1 sample channel on the market, the fixed position measurement is luminous, two dimension shows.Domestic East China Normal University side Yu Zhi professor seminar is by (analytical test and the instrument [J] write to the data acquisition system (DAS) of electrogenerated chemiluminescence instrument and firmware program, 2008,14 (02): 67-71), successfully with the instrument application (Analytica Chimica Acta 598 (2007) 242-248) in the detection of bipyridyl ruthenium-nano silicon particles load protein system of reequiping.
But the electrogenerated chemiluminescence instrument is in its evolution, because the restriction of some technical conditions is used some defective, for example design of speed sampling module still in the design of each chip module of instrument internal; In the design of electrolytic cell, can't carry out Current Control to electrode system at experimentation; With the coupling of other instruments on lack the data transformation interface of coupling.These defectives have directly limited the expanded application of electrogenerated chemiluminescence instrument.
The utility model content
But technical problem to be solved in the utility model provides a kind of electrogenerated chemiluminescence transient analyser with high sensitivity and transient analysis.
The technical scheme that its technical matters that solves the utility model adopts is: electrogenerated chemiluminescence transient analyser of the present utility model, constitute by electrogenerated chemiluminescence instrument, oscillograph, electrochemical workstation, the electrogenerated chemiluminescence instrument comprises electrode system and speed sampling module assembly, it is characterized in that: described electrode system is provided with free gauge tap, can realize the conversion between electrode system stable state and the transient state by free break-make with Control current and electromotive force to the working electrode of electrode system with to electrode.
In technique scheme, the employing ADS8361 high-speed collection card in the described speed sampling module assembly.
The beneficial effects of the utility model are, working electrode by free switch control electrode system and to the electric current and the electromotive force of electrode, the scanning certain hour, leave standstill a period of time again, help the electrode diffusion of ion on every side like this, realize the conversion of electrode system between stable state and transient state, obtain the various kinetic parameters of stable state and transient state easily, have structure and characteristics simple to operate; The employing ADS8361 high-speed collection card of speed sampling module assembly, elimination noise preferably, the sensitivity and the detection efficiency of raising electrogenerated chemiluminescence transient analyser are biology, subjects such as medical science and chemistry provide a kind of detection means of economy.Be fit to medicine, check and analysis such as amino acid are particularly suitable for the research of protein and medicine, nucleic acid interaction.
Description of drawings
This instructions comprises following two width of cloth accompanying drawings:
Fig. 1 is the whole coupling structural representation of the utility model electrogenerated chemiluminescence transient analyser;
Fig. 2 is the basic structure synoptic diagram of the utility model electrogenerated chemiluminescence transient analyser.
Fig. 3 is the cyclic voltammetric figure and the light intensity-time curve of titania-potassium nitrate-ammonium persulfate coreaction system electrogenerated chemiluminescence stable state and transient state process;
Fig. 4 is the step pulse figure and the light intensity-time curve of titania-potassium nitrate-ammonium persulfate coreaction system electrogenerated chemiluminescence stable state and transient state process.
Parts shown in the figure and pairing mark: electrogenerated chemiluminescence instrument 10, oscillograph 20, electrochemical workstation 30, electrode system 11, free gauge tap 12, speed sampling module assembly 13, magazine 14, electrolytic cell 15, photomultiplier 16, computer recorder 17.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
With reference to Fig. 1, electrogenerated chemiluminescence transient analyser of the present utility model is made of electrogenerated chemiluminescence instrument 10, oscillograph 20, electrochemical workstation 30, and electrogenerated chemiluminescence instrument 10 comprises electrode system 11 and speed sampling module assembly 12.Described electrode system 11 is provided with free switch 12, can realize the conversion between electrode system stable state and the transient state by free break-make with Control current and electromotive force to the working electrode of electrode system 11 with to electrode.
Shown in Fig. 2 is a kind of concrete structure of electrogenerated chemiluminescence instrument 10, mainly by magazine 14, electrolytic cell 15, electrode system 11, free gauge tap 12, electrochemical workstation 30, photomultiplier 16, speed sampling module assembly 13 and computer recorder 17.Free gauge tap 12 can the Control work electrode (shown in the figure: W) with to electrode (shown in the figure: the C) break-make of electric current, thereby the conversion of control electrode system 11 between stable state and transient state.Employing ADS8361 high-speed collection card in the described speed sampling module assembly 13, carry out micro integrated to the operational amplification circuit in the speed sampling module assembly 12, realize the current signal of photomultiplier output, directly be converted into voltage signal through operational amplifier, enter lock-in amplifier, reduce background noise significantly, elimination noise, the sensitivity and the detection efficiency of raising electrogenerated chemiluminescence transient analyser.Described electrochemical workstation can preferably adopt Tianjin Lanllike Chemistry Electronic High-tech Co., Ltd.'s 2006 type electrochemical workstations, and this model electrochemical workstation electrochemical signals is stable and can be easily and the coupling of electrogenerated chemiluminescence transient analyser.The electrochemical signals of electrode reaction system can be better obtained in the coupling of electrochemical workstation.
A kind of mounting means of electrode system 11 has been shown among Fig. 2, and all electrodes all are mounted in the magazine 14, the interference of ambient light when preventing to react.Photomultiplier 16 is placed in the below of magazine, optical channel by magazine 14 bottoms carries out the progression amplification to electrolytic cell internal solution electrode system 11 electrogenerated chemiluminescences, the light signal of handling imports in the high-speed collection card, and speed acquisition module assembly 13 is wherein being controlled the speed of data acquisition.The chemical light signal importing computer recorder that produces like this shows.On the other hand, the electric signal that enters electrochemical workstation is electrochemical signals, imports computer recorder thus and shows electrochemical signals.
The utility model is on the basis of existing Electrochemiluminescprocess process instrument, the hardware components of instrument has been done redesign to be revised, so both can be at electrogenerated chemiluminescence under the steady state conditions, can under transient state, detect electrogenerated chemiluminescence again, and on the speed sampling module, remodify design, obtain curve baseline more stably, further improve the sensitivity of the collection of various parameters.Simultaneously, with the coupling of other instruments on, the data transformation interface of more couplings has been arranged, can realize various electric signal very easily, the conversion between chemical signal and the light signal, thus improved the accuracy of experiment.It can be simultaneously realizes that to sample electrogenerated chemiluminescence detects in real time, and shows chemiluminescence signal, electrochemical analysis signal synchronously and it is carried out labor, and adopt advanced photoelectricity testing part and adopt photon counting technique in the faint light context of detection, make instrument good response also be arranged at the faint light detection level; Its spectral response range can expand to ultraviolet and near infrared.
With reference to Fig. 3,, there is shown the cyclic voltammetric figure and the light intensity-time curve of titania-potassium nitrate-ammonium persulfate coreaction system electrogenerated chemiluminescence stable state and transient state process as the embodiment of electrogenerated chemiluminescence transient analyser of the present utility model.The method of cyclic voltammetric scans in the utilization Electrochemiluminescprocess process, when being in maximum luminous position suddenly failure of current, with observe in the transient state process luminous intensity over time.The changes in contrast of light intensity and time in stable state and transient state as we can see from the figure.Discovery enters the post-reacted luminous time that a relaxation is arranged of transient state, buries in oblivion along with cutting off electric current and light intensity can't occur.The time that transient state process continues among the figure is 3 times of steady-state process duration nearly.We can be at disconnecting circuit and connect circuit on appropriate opportunity by switchgear, reaching comparing and measuring of stable state and transient state, thereby can obtain the kinetic parameter of binary states simultaneously.
With reference to Fig. 4,, there is shown the step pulse figure and the light intensity-time curve of titania-potassium nitrate-ammonium persulfate coreaction system electrogenerated chemiluminescence stable state and transient state process as the embodiment of electrogenerated chemiluminescence transient analyser of the present utility model.The method of using step pulse in the Electrochemiluminescprocess process scans, and in the luminous maximal value that reaches of the moment that provides step current, cuts off working electrode simultaneously and to the electric current of electrode, electrode system enters transient state, observes light intensity over time this moment.Similar with the result who works it out with cyclic voltammetry, the light intensity of system does not have the moment vanishing behind the cut-out electric current, but is reduced to baseline gradually at special time and so on.Transient state time is about 5 times of stable state among the figure.We have illustrated time of cutting off electric current and connecting circuit no matter to be to cut off or connect in the step pulse figure, and all can there be big hop electric current moment, but hop can not take place the electric potential difference on the solution electrode interface (being the interface overpotential) immediately.That is to say that changing the needed electrostatic double layer charging process of interfacial potential difference needs the regular hour, can not finish in moment, the change of interfacial potential difference also can not be finished in moment like this.Therefore, begin the foundation of electrode potential stable to the interface, must experience a transition period-transient state process from polarization.
Claims (3)
1. electrogenerated chemiluminescence transient analyser, constitute by electrogenerated chemiluminescence instrument (10), oscillograph (20), electrochemical workstation (30), electrogenerated chemiluminescence instrument (10) comprises electrode system (11) and speed sampling module assembly (13), it is characterized in that: described electrode system (11) is provided with free gauge tap (12), can realize the conversion between electrode system stable state and the transient state by free break-make with Control current and electromotive force to the working electrode of electrode system (11) with to electrode.
2. electrogenerated chemiluminescence transient analyser as claimed in claim 1 is characterized in that: adopt the ADS8361 high-speed collection card in the described speed sampling module assembly (13).
3. electrogenerated chemiluminescence transient analyser as claimed in claim 1 is characterized in that: described electrogenerated chemiluminescence instrument (10) is made of electrode system (11), gauge tap (12), speed sampling module assembly (13), magazine (14), electrolytic cell (15), photomultiplier (16) and computer recorder (17); The working electrode of electrode system (11) and electrode is installed in the magazine (14), photomultiplier (16) is placed in the below of magazine (14), optical channel by magazine (14) bottom carries out the progression amplification to electrolytic cell (15) internal solution electrode system (11) electrogenerated chemiluminescence, the light signal of handling imports in the speed sampling module assembly (13), is write down the chemical light signal that is produced by computer recorder (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200764572U CN202002905U (en) | 2011-03-22 | 2011-03-22 | Electrogenerated chemiluminescence transient state analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200764572U CN202002905U (en) | 2011-03-22 | 2011-03-22 | Electrogenerated chemiluminescence transient state analyzer |
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| CN202002905U true CN202002905U (en) | 2011-10-05 |
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| CN2011200764572U Expired - Fee Related CN202002905U (en) | 2011-03-22 | 2011-03-22 | Electrogenerated chemiluminescence transient state analyzer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297231A (en) * | 2014-10-30 | 2015-01-21 | 中国科学院长春应用化学研究所 | Electrochemical luminescence spectrograph |
| CN109916883A (en) * | 2019-03-28 | 2019-06-21 | 南京大学 | Transient state optical electro-chemistry microscope and transient state electrochemical process measurement method |
| CN111693515A (en) * | 2020-05-07 | 2020-09-22 | 四川轻化工大学 | Flow type electrochemical luminescence real-time detection device and detection method |
-
2011
- 2011-03-22 CN CN2011200764572U patent/CN202002905U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297231A (en) * | 2014-10-30 | 2015-01-21 | 中国科学院长春应用化学研究所 | Electrochemical luminescence spectrograph |
| CN109916883A (en) * | 2019-03-28 | 2019-06-21 | 南京大学 | Transient state optical electro-chemistry microscope and transient state electrochemical process measurement method |
| CN109916883B (en) * | 2019-03-28 | 2021-07-09 | 南京大学 | Transient photoelectrochemical microscope and transient electrochemical process measuring method |
| CN111693515A (en) * | 2020-05-07 | 2020-09-22 | 四川轻化工大学 | Flow type electrochemical luminescence real-time detection device and detection method |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20111005 Termination date: 20160322 |
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| CF01 | Termination of patent right due to non-payment of annual fee |