CN107219277B - The preparation of molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode - Google Patents
The preparation of molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode Download PDFInfo
- Publication number
- CN107219277B CN107219277B CN201710315123.8A CN201710315123A CN107219277B CN 107219277 B CN107219277 B CN 107219277B CN 201710315123 A CN201710315123 A CN 201710315123A CN 107219277 B CN107219277 B CN 107219277B
- Authority
- CN
- China
- Prior art keywords
- sulfonic acid
- poly
- aminobenzene sulfonic
- modified electrode
- electrode
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/308—Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
- G01N27/3275—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction
- G01N27/3277—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction being a redox reaction, e.g. detection by cyclic voltammetry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/36—Glass electrodes
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
The present invention relates to a kind of molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode preparation methods, comprising the following steps: prepares poly- p-aminobenzene sulfonic acid modified electrode, prepares molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode.Beneficial effects of the present invention: molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode preparation process is simple and environmentally-friendly pollution-free.In addition, the introducing of poly- p-aminobenzene sulfonic acid can increase with the matched number of cavities of tryptophan three-dimensional space, the molecular engram material obtained from is obviously improved the recognition efficiency of Tryptophan enantiomer.
Description
Technical field
The present invention relates to a kind of molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode preparation method,
Belong to electrochemistry and investigation of materials field.
Background technique
Chipal compounds are the optical isomers with extremely similar physicochemical properties, and the two is difficult to distinguish, therefore
In biochemical analysis field, the identification and fractionation of chipal compounds are a difficulty and difficult task.In the past, it is widely used in
The method of identification chipal compounds mainly has chromatographic technique, spectral technique and electrochemical techniques etc..Nowadays, due to electrochemical analysis
Method has high sensitivity, interferes small and simple operation and other advantages, therefore the chiral Recognition method based on electrochemical techniques is very
It is hopeful also to be easiest to promote.
The intracorporal various protein of people are made of 20 kinds of primary amino acids, they are closely bound up with the life of the mankind.
And the primary amino acid for constituting protein is mostly L- configuration, therefore the research of the chiral sensor based on L- amino acids is standby
It is concerned.Since molecularly imprinted polymer has many advantages such as configuration precordainment, highly selective, easily prepared and relatively low
Cost etc., therefore in the past few decades, molecularly imprinted polymer (MIPs) is as L- amino acids chiral Recognition material
Research has been achieved for remarkable progress.Conducting polymer can be by molecular imprinting technology and electrochemical techniques perfect combination, still
Traditional MIPs haves the defects that imprinted sites are less, it is made to have lower recognition efficiency for target molecule, which has limited
Application of the conducting polymer as molecular engram material, therefore how to increase trace position of the template molecule inside conducting polymer
Point is a research hotspot.
The sulfonic acid group that poly- p-aminobenzene sulfonic acid (pABSA) is contained can be by electrostatic interaction and the pi-conjugated work of π-with phenyl ring
With in conjunction with organic guest molecule, so as to be used for the base material of molecular engram.It is prepared by cyclic voltammetry
PABSA modified glassy carbon electrode (pABSA/GCE), and continue decorating molecule trace overoxidised polypyrrole on the modified electrode surface,
Molecular engram overoxidised polypyrrole/pABSA/GCE (MIOPPy/pABSA/GCE) can be obtained, which can be used for color
The electrochemistry chiral Recognition of propylhomoserin enantiomer.
Summary of the invention
The present invention relates to a kind of molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode preparation method,
The following steps are included:
A, prepare pABSA modified electrode: using diameter for the glass-carbon electrode (GCE) of 3mm is working electrode, and platinized platinum is auxiliary
Electrode, saturated calomel electrode are the three-electrode system of reference electrode；Weigh the phosphorus that 15mg p-aminobenzene sulfonic acid is dissolved in 20mL 0.1M
In hydrochlorate buffer solution (pH=7.0), in the potential window of -1.5~2.5V, speed is swept using cyclic voltammetry with 0.1V/s
PABSA modified electrode is prepared, is denoted as pABSA/GCE；
B, prepare MIOPPy/pABSA/GCE: it includes 2mM L-Trp, 0.1M pyrroles and 0.1M that pABSA/GCE, which is immersed,
20min is stood in the mixed solution of PBS (pH=3.5), then within the scope of the electrochemistry of -0.6~0.8V (vs.SCE), with
0.1V/s's sweeps the circle of fast cyclic voltammetric (CV) 10, obtains the PPy/pABSA modified electrode (PPy/pABSA/ doped with L-Trp
GCE)；The modified electrode is immersed into 0.1M H again2SO4In solution, the current potential dedoping 1000s for applying 0.4V obtains molecule print
PPy/pABSA modified electrode, i.e. MIPPy/pABSA/GCE；In order to evade shadow of the oxidation peak for Electrochemical Detection Trp of PPy
It rings, MIPPy/pABSA/GCE is placed in the NaOH solution of 0.1M, CV is carried out in the electrochemical window of 0.4~1.2V, until
There is stable CV curve, obtains MIOPPy/pABSA/GCE.
Further, the quality of p-aminobenzene sulfonic acid is 15mg in step a, and the pH of phosphate buffer solution is 3.5.
Further, the pH value of phosphate buffer is 4 in step b, and the constant potential of time of repose 20min, dedoping are
0.4V。
Detailed description of the invention
The following further describes the present invention with reference to the drawings.
Fig. 1 is DPV figure of the Tryptophan enantiomer on MIOPPy/pABSA/GCE.
Fig. 2 is DPV figure of the Tryptophan enantiomer on MIOPPy/GCE.
Fig. 3 is DPV figure of the Tryptophan enantiomer on pABSA/GCE.
Specific embodiment
Presently in connection with specific embodiment, the present invention will be further described, following embodiment be intended to illustrate invention rather than
Limitation of the invention further.
Embodiment one:
The step of preparing MIOPPy/pABSA/GCE is as follows:
(1) prepare pABSA modified electrode: using diameter for the glass-carbon electrode (GCE) of 3mm is working electrode, supplemented by platinized platinum
Electrode is helped, saturated calomel electrode is the three-electrode system of reference electrode.It weighs 15mg p-aminobenzene sulfonic acid and is dissolved in 20mL 0.1M's
In phosphate buffer solution (pH=7.0), in the potential window of -1.5~2.5V, speed is swept using cyclic voltammetric with 0.1V/s
PABSA modified electrode is prepared in method, is denoted as pABSA/GCE.
(2) prepare MIOPPy/pABSA/GCE: by pABSA/GCE immerse include 2mM L-Trp, 0.1M pyrroles and
20min is stood in the mixed solution of 0.1M phosphate buffer solution (pH=3.5), then in the electricity of -0.6~0.8V (vs.SCE)
It in chemistry range, is enclosed with the fast cyclic voltammetric (CV) 10 of sweeping of 0.1V/s, obtains the PPy/pABSA modification electricity doped with L-Trp
Pole (PPy/pABSA/GCE).The modified electrode is immersed into 0.1M H again2SO4In solution, apply the current potential dedoping 1000s of 0.4V
Obtain molecular engram PPy/pABSA modified electrode, i.e. MIPPy/pABSA/GCE.In order to evade the oxidation peak of PPy for electrochemistry
The influence for detecting Trp, MIPPy/pABSA/GCE is placed in the NaOH solution of 0.1M, in the electrochemical window of 0.4~1.2V
CV is carried out, until there is stable CV curve, obtains MIOPPy/pABSA/GCE.
It is molten that MIOPPy/pABSA/GCE is immersed in 0.1M PBS (pH=4.0) of the 25mL comprising 0.5mM L/D- tryptophan
In liquid, under conditions of constant potential, the voltage of application -0.2V is enriched with 200s, then in the electrochemical window of 0.4~1.0V (vs.SCE)
In mouth range, current potential increment is 4mV, and amplitude is that 50mV carries out DPV test, records oxidation spike potential and electric current accordingly, compares
Aoxidize the difference of spike potential and electric current.As shown in Figure 1, MIOPPy/pABSA/GCE is for the identification electric current ratio of L/D- tryptophan
2.7, so that MIOPPy/pABSA/GCE has effective recognition efficiency for Tryptophan enantiomer.
Embodiment two:
The step of preparing MIOPPy/GCE is as follows: using diameter for the glass-carbon electrode (GCE) of 3mm is working electrode, platinized platinum
For auxiliary electrode, saturated calomel electrode is the three-electrode system of reference electrode.It includes 2mM L-Trp, 0.1M that GCE, which is immersed,
20min is stood in the mixed solution of pyrroles and 0.1M phosphate buffer solution (pH=3.5), then in -0.6~0.8V
(vs.SCE) it within the scope of electrochemistry, is enclosed with the fast cyclic voltammetric (CV) 10 of sweeping of 0.1V/s, obtains the PPy doped with L-Trp
Modified electrode (PPy/GCE).The modified electrode is immersed into 0.1M H again2SO4In solution, apply the current potential dedoping 1000s of 0.4V
Obtain molecular engram PPy modified electrode, i.e. MIPPy/GCE.In order to evade shadow of the oxidation peak for Electrochemical Detection Trp of PPy
It rings, MIPPy/GCE is placed in the NaOH solution of 0.1M, CV is carried out in the electrochemical window of 0.4~1.2V, it is steady until occurring
Fixed CV curve, obtains MIOPPy/GCE.
MIOPPy/GCE is immersed in 0.1M PBS (pH=4.0) solution that 25mL includes 0.5mM L/D- tryptophan,
Under conditions of constant potential, the voltage of application -0.2V is enriched with 200s, then in the potential window model of 0.4~1.0V (vs.SCE)
In enclosing, current potential increment is 4mV, and amplitude is that 50mV carries out DPV test, records corresponding oxidation spike potential and electric current, compares oxidation
The difference of spike potential and electric current.As shown in Figure 2, MIOPPy/GCE is 1.7 for the identification electric current ratio of L/D- tryptophan, thus
MIOPPy/GCE has effective recognition efficiency for Tryptophan enantiomer.
Comparative example one:
MIPPy/pABSA/GCE, MIOPPy/GCE, pABSA/GCE are prepared, the identification effect of its tryptophan enantiomer is compared
Rate (as identification electric current ratio), as a result as shown in Figure 1, 2, 3.PABSA/GCE has extremely faint identification electricity to Trp enantiomer
Ratio is flowed, pABSA is primarily due to and selectivity is not present for the combination of Trp enantiomer.By MIOPPy modification on GCE, DPV is aobvious
The peak current ratio for showing L-type and D- type amino acid is 1.7；When MIOPPy/pABSA modification is on GCE, DPV shows L-type
Peak current ratio with D- type amino acid is 2.7.This is mainly due to: during synthetic molecules imprinted material, due to and L-Trp
There are electrostatic interaction and π-πconjugation between template molecule, pABSA can increase and the matched cavity number of L-Trp three-dimensional space
Amount, and trace cavity has spatial selectivity for Trp enantiomer.Therefore the MIOPPy/ that pABSA is prepared is introduced
PABSA/GCE has better recognition effect for Trp enantiomer.
The MIOPPy/pABSA/GCE that the present invention is prepared, preparation process is simple, inexpensively.The introducing of pABSA can increase
Recognition effect of the molecular engram material for tryptophan.
Claims (3)
1. preparing molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode, it is characterised in that: steps are as follows:
A, prepare poly- p-aminobenzene sulfonic acid modified electrode: using diameter for the glass-carbon electrode of 3mm is working electrode, and platinized platinum is auxiliary
Electrode, saturated calomel electrode are the three-electrode system of reference electrode；It weighs 10~20mg p-aminobenzene sulfonic acid and is dissolved in 20mL
In the phosphate buffer solution that 0.1MpH is 7.0, in the potential window of -1.5~2.5V, speed is swept using circulation with 0.1V/s
Poly- p-aminobenzene sulfonic acid modified electrode is prepared in voltammetry；
B, it prepares molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode: poly- p-aminobenzene sulfonic acid is modified into electricity
Pole immerse include 2mM L-Trp and 0.1M pyrroles 0.1M pH be 2.5~4.5 phosphate buffer solution in stand 10~
30min carries out the circle of cyclic voltammetry scan 10 then within the scope of the electrochemical window of -0.6~0.8V with the speed of sweeping of 0.1V/s,
Obtain the polypyrrole doped with L-Trp/poly- p-aminobenzene sulfonic acid modified electrode；The modified electrode is immersed into 0.1M H again2SO4
In solution, the current potential dedoping 1000s for applying 0.3~0.5V obtains molecular engram polypyrrole/poly- p-aminobenzene sulfonic acid modification electricity
Pole；Molecular engram polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode is placed in 0.1M NaOH solution, in the electricity of 0.4~1.2V
Cyclic voltammetry scan is carried out in chemical window, until there is stable cyclic voltammetry curve, is obtained final modified electrode, that is, is divided
Sub- trace overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode.
2. preparing molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode, feature according to claim 1
Be: the quality of p-aminobenzene sulfonic acid is 15mg in the step a.
3. preparing molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode, feature according to claim 1
Be: the pH value of phosphate buffer is 4 in the step b, time of repose 20min, and the constant potential of dedoping is 0.4V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710315123.8A CN107219277B (en) | 2017-05-08 | 2017-05-08 | The preparation of molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710315123.8A CN107219277B (en) | 2017-05-08 | 2017-05-08 | The preparation of molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107219277A CN107219277A (en) | 2017-09-29 |
| CN107219277B true CN107219277B (en) | 2019-05-31 |
Family
ID=59943894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710315123.8A Active CN107219277B (en) | 2017-05-08 | 2017-05-08 | The preparation of molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107219277B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108841034A (en) * | 2018-04-20 | 2018-11-20 | 常州大学 | A kind of molecular engram silica/sodium alginate composite material preparation method can be used for electrochemical recognition Tryptophan enantiomer |
| CN110243902B (en) * | 2019-02-25 | 2021-07-30 | 常州大学 | Preparation method of bimolecular imprinted silica/polypyrrole composite material capable of simultaneously recognizing alanine and tyrosine enantiomers |
| CN110376266A (en) * | 2019-08-15 | 2019-10-25 | 蚌埠学院 | A kind of method of quick detection hydroquinone |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655708A (en) * | 2015-01-30 | 2015-05-27 | 安徽师范大学 | P-aminobenzene sulfonic acid/imprinted poly-o-phenylenediamine modified electrode as well as preparation method and application thereof |
| CN105424786A (en) * | 2015-10-29 | 2016-03-23 | 常州大学 | Method for preparation of peroxide polyaniline/beta-cyclodextrin composite film modified electrode and electrochemical recognition of tryptophan enantiomers |
| CN105510421A (en) * | 2016-01-16 | 2016-04-20 | 常州大学 | Method for preparing molecularly-imprinted overoxidized polypyrrole and nanogold-modified electrode and applying molecularly-imprinted overoxidized polypyrrole and nanogold-modified electrode to electrochemical recognition of cysteine enantiomer |
| CN105753727A (en) * | 2016-02-24 | 2016-07-13 | 常州大学怀德学院 | Method for selectively separating amino acid optical isomers through molecular imprinting polypyrrole electrode mast |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280441A (en) * | 2014-10-15 | 2015-01-14 | 甘肃省科学院传感技术研究所 | Method for preparing Au@Ag-PPY composite nanometer material and L-cysteine double-layer film immobilized glucose oxidase modified electrode |
| CN106226381B (en) * | 2016-07-11 | 2018-10-19 | 常州大学 | A kind of preparation of Thermo-sensitive quinine chiral sensor and it is applied to electrochemical recognition Tryptophan enantiomer |
-
2017
- 2017-05-08 CN CN201710315123.8A patent/CN107219277B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655708A (en) * | 2015-01-30 | 2015-05-27 | 安徽师范大学 | P-aminobenzene sulfonic acid/imprinted poly-o-phenylenediamine modified electrode as well as preparation method and application thereof |
| CN105424786A (en) * | 2015-10-29 | 2016-03-23 | 常州大学 | Method for preparation of peroxide polyaniline/beta-cyclodextrin composite film modified electrode and electrochemical recognition of tryptophan enantiomers |
| CN105510421A (en) * | 2016-01-16 | 2016-04-20 | 常州大学 | Method for preparing molecularly-imprinted overoxidized polypyrrole and nanogold-modified electrode and applying molecularly-imprinted overoxidized polypyrrole and nanogold-modified electrode to electrochemical recognition of cysteine enantiomer |
| CN105753727A (en) * | 2016-02-24 | 2016-07-13 | 常州大学怀德学院 | Method for selectively separating amino acid optical isomers through molecular imprinting polypyrrole electrode mast |
Non-Patent Citations (4)
| Title |
|---|
| Chiral electrochemical recognition of cysteine enantiomers with molecularly imprinted overoxidized polypyrrole-Au nanoparticles;Jiawei Gu等;《Synthetic Metals》;20160526;第222卷;第138页EXPERIMENTAL部分 |
| L-色氨酸分子印迹壳聚糖膜的制备及透过选择性;农兰平等;《化学研究》;20090930;第20卷(第3期);全文 |
| Potential-Induced Enantioselective Uptake of Amino Acid into Molecularly Imprinted Overoxidized Polypyrrole;Bhavana Deore等;《Analytical Chemistry》;20000901;第72卷(第17期);第3990页EXPERIMENTAL SECTION部分 |
| 分子印迹聚吡咯/Fe3O4复合材在识别色氨酸光学异构体中的应用料的制备及其;陈智栋等;《色谱》;20120430;第30卷(第4期);全文 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107219277A (en) | 2017-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107219277B (en) | The preparation of molecular engram overoxidised polypyrrole/poly- p-aminobenzene sulfonic acid modified electrode | |
| Liang et al. | Facile preparation of protein stationary phase based on polydopamine/graphene oxide platform for chip-based open tubular capillary electrochromatography enantioseparation | |
| CN104792844A (en) | Preparation of chitosan-carbon quantum dot composite film modified electrode and application of chitosan-carbon quantum dot composite film modified electrode to electrochemical identification of tryptophan enantiomer | |
| Ba et al. | Determination of l-tryptophan in the presence of ascorbic acid and dopamine using poly (sulfosalicylic acid) modified glassy carbon electrode | |
| Prasad et al. | Electrochemically imprinted molecular recognition sites on multiwalled carbon-nanotubes/pencil graphite electrode surface for enantioselective detection of d-and l-aspartic acid | |
| Gu et al. | Chiral electrochemical recognition of cysteine enantiomers with molecularly imprinted overoxidized polypyrrole-Au nanoparticles | |
| CN107677662B (en) | A kind of preparation method of Clenizole Hydrochloride molecular engram film electrochemical luminescence sensor | |
| CN105424786B (en) | A kind of preparation of peroxidating polyaniline/complex film modified electrode of beta cyclodextrin and electrochemical recognition Tryptophan enantiomer | |
| Sánchez‐Hernández et al. | Sensitive chiral analysis by CE: An update | |
| CN106226381B (en) | A kind of preparation of Thermo-sensitive quinine chiral sensor and it is applied to electrochemical recognition Tryptophan enantiomer | |
| Chen et al. | One‐step preparation and application of mussel‐inspired poly (norepinephrine)‐coated polydimethylsiloxane microchip for separation of chiral compounds | |
| CN108645902A (en) | A kind of preparation method of Chiral Calixarenes Derivatives Modified Electrodes for electrochemical process identification Tryptophan enantiomer | |
| CN106198667A (en) | A kind of molecular imprinting electrochemical sensor for detecting trace bisphenol-A | |
| CN108802123A (en) | A kind of method of cyclodextrin nano microballoon electrochemical recognition amino acid enantiomer | |
| CN105753727A (en) | Method for selectively separating amino acid optical isomers through molecular imprinting polypyrrole electrode mast | |
| CN104655708B (en) | Poly- p-aminobenzene sulfonic acid/trace poly-o-phenylenediamine modified electrode and its preparation method and application | |
| CN105044194A (en) | Method used for detecting acrylamide concentration of solutions | |
| Liang et al. | Preparation of polynorepinephrine adhesive coating via one-step self-polymerization for enantioselective capillary electrochromatography coupled with electrogenerated chemiluminesense detection | |
| CN103149254B (en) | Surface coating performance testing device and evaluation method for timber, concrete or other materials | |
| Huang et al. | End‐column electrochemical detection for aromatic amines with high performance capillary electrophoresis | |
| CN110455880A (en) | A kind of L lysine HCL can be used for electrochemistry chiral Recognition induces the preparation method of four pairs of carboxyl phenyl porphyrin self-assemblies | |
| CN108872339B (en) | Preparation method of molecularly imprinted sodium alginate/manganese dioxide modified electrode for electrochemically identifying cysteine enantiomer | |
| CN109828011A (en) | A kind of iron-based organic framework material MIL-100 (Fe) and its electrochemical preparation method and application | |
| CN104034772A (en) | Preparation method and application of modification electrode | |
| CN108254427A (en) | A kind of preparation method of 4- tertiary butyl p tertButylcalixarene modified electrodes for electrochemical process identification amino acid enantiomer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |