CN110186880A - The cadmium ion detection kit and its application of CdTe/CdS core-shell quanta dots based on EDTA etching - Google Patents
The cadmium ion detection kit and its application of CdTe/CdS core-shell quanta dots based on EDTA etching Download PDFInfo
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- CN110186880A CN110186880A CN201910313809.2A CN201910313809A CN110186880A CN 110186880 A CN110186880 A CN 110186880A CN 201910313809 A CN201910313809 A CN 201910313809A CN 110186880 A CN110186880 A CN 110186880A
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- 229910004613 CdTe Inorganic materials 0.000 title claims abstract description 47
- WLZRMCYVCSSEQC-UHFFFAOYSA-N cadmium(2+) Chemical compound [Cd+2] WLZRMCYVCSSEQC-UHFFFAOYSA-N 0.000 title claims abstract description 39
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000005530 etching Methods 0.000 title claims abstract description 15
- 239000011258 core-shell material Substances 0.000 title claims abstract description 13
- 239000000243 solution Substances 0.000 claims abstract description 63
- QKNYBSVHEMOAJP-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydron;chloride Chemical compound Cl.OCC(N)(CO)CO QKNYBSVHEMOAJP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000007853 buffer solution Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000004793 Polystyrene Substances 0.000 claims abstract description 10
- 229920002223 polystyrene Polymers 0.000 claims abstract description 10
- 230000005284 excitation Effects 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 3
- 239000000872 buffer Substances 0.000 claims description 7
- 239000002096 quantum dot Substances 0.000 claims description 7
- 239000007983 Tris buffer Substances 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- DEQXHPXOGUSHDX-UHFFFAOYSA-N methylaminomethanetriol;hydrochloride Chemical compound Cl.CNC(O)(O)O DEQXHPXOGUSHDX-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 231100000419 toxicity Toxicity 0.000 abstract description 2
- 230000001988 toxicity Effects 0.000 abstract description 2
- 229910021645 metal ion Inorganic materials 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 229960001484 edetic acid Drugs 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000035484 reaction time Effects 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 1
- NQMRYBIKMRVZLB-UHFFFAOYSA-N methylamine hydrochloride Chemical compound [Cl-].[NH3+]C NQMRYBIKMRVZLB-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/88—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
- C09K11/881—Chalcogenides
- C09K11/883—Chalcogenides with zinc or cadmium
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N21/643—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" non-biological material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6432—Quenching
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses the cadmium ion detection kits and its application of a kind of CdTe/CdS core-shell quanta dots (QDs) based on EDTA etching, which includes following substance: 96 hole polystyrene micropore blackboards, EDTA-CdTe/CdS QDs solution, Cd2+Mark-on solution.500 μ l Cd are added in 1mL EDTA-CdTe/CdS QDs solution2+Mixture is diluted to 2mL with the Tris-HCl buffer solution of 10mM pH=8.5 by mark-on solution.Solution is sufficiently mixed, black is protected from light 5 minutes.Completely reacted solution is added dropwise in 96 hole polystyrene micropore blackboards, and is put into the excitation wavelength in microplate reader with 365nm and is scanned the fluorescence intensity for obtaining 560nm transmitted wave strong point.The present invention is to trace Cd2+Selectivity be better than other metal ions, in actual water sample have good practicability.And the Monitoring lower-cut of kit of the present invention is low, and detection time is short, the detection range of linearity is wide, toxicity is low.
Description
Technical field
The invention belongs to nano-biosensing and technical field of biological, and in particular to one kind is based on ethylenediamine tetrem
The cadmium ion detection kit and its application of the CdTe/CdS core-shell quanta dots of sour (EDTA) etching.
Background technique
Currently, having developed a variety of methods to measure the cadmium ion in food, tap water or lake water, such as Atomic absorption
Spectroscopic methodology, inductively coupled plasma mass spectrometry, electrochemical method, high performance liquid chromatography and gas chromatography.However, above-mentioned
Analytical technology needs costly and complicated equipment, a large amount of samples, toxic and expensive reagent or professional technician, therefore, needs
Find a kind of detection reagent that can be quick and easy and economical and practical.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide it is a kind of based on ethylenediamine tetra-acetic acid etching
The cadmium ion detection kit of CdTe/CdS core-shell quanta dots and its application.
The purpose of the present invention is achieved through the following technical solutions: a kind of CdTe/CdS core based on EDTA etching
The cadmium ion detection kit of shell quantum dot, it includes following substance: 96 hole polystyrene micropore blackboards, EDTA-CdTe/CdS
QDs solution, Cd2+Mark-on solution.
The EDTA-CdTe/CdS QDs solution is: by the Tris-HCl buffer solution of 500 μ l 10mM pH=8.5,
The CdTe/CdS quantum dot of 100 4 μM of μ l and 100 μM of EDTA of 110 μ l are successively added in 2mL test tube.With 10mM pH=
Mixture is diluted to the half of test tube total volume by 8.5 Tris-HCl buffer solution, and it is anti-to be placed on the black place of being protected from light
Answer 5 minutes gained.
The Cd2+Mark-on solution is: the Cd by introducing various concentration level2+All samples are prepared, obtains and adds difference
The Cd of concentration level2+Originally water sample；And pH value of solution=8.5 are adjusted with the Tris-HCl buffer of 10mM pH=8.5.
Further, Tris-HCl (trishydroxymethylaminomethane-hydrochloride) buffer solution is: weighing 0.6057g
Tris powder be dissolved in deionized water, be adjusted to pH=8.5 with HCl, and solution is settled to 500ml, obtaining concentration is
The Tris-HCl buffer of 10mM.
A kind of application of the cadmium ion detection kit of the CdTe/CdS core-shell quanta dots based on EDTA etching, the application
Specifically:
500 μ l Cd are added in EDTA-CdTe/CdS QDs solution2+Mark-on solution, with the Tris- of 10mM pH=8.5
Mixture is diluted to 2mL by HCl buffer solution.Solution is sufficiently mixed, black is protected from light 5 minutes.By completely reacted solution
It is added dropwise in 96 hole polystyrene micropore blackboards, and is put into the excitation wavelength in microplate reader with 365nm and is scanned acquisition
The fluorescence intensity of 560nm transmitted wave strong point.
Further, the Cd2+Mark-on solution is preferably true water sample mark-on solution.
The beneficial effects of the present invention are: the present invention is using the CdTe/CdS core-shell quanta dots of ethylenediamine tetra-acetic acid etching to cadmium
Ion specific detection carries out quantitative detection to cadmium ion by fluorescence intensity change.And under the detection of kit of the present invention
Limit it is low, detection time only need 10min, detection the range of linearity it is wide low up to 10 μ g/L-1000 μ g/L, toxicity.
Detailed description of the invention
Fig. 1 is the method for the present invention schematic diagram；
Fig. 2 is present invention detection Cd2+Mechanism phenogram；
Fig. 3 is the reaction result figure of EDTA and CdTe/CdS the QDs solution of various concentration of the present invention；
Fig. 4 is the reaction time result figure of EDTA of the present invention Yu CdTe/CdS QDs solution；
Fig. 5 is the reaction time result figure of EDTA-CdTe/CdS QDs solution and cadmium ion of the present invention；
Fig. 6 is present invention detection various concentration cadmium ion result figure；
Fig. 7 is fluorescence intensity change result figure of the kit under different material interference；
Fig. 8 is fluorescence intensity change result of the kit in 300-1000 μ g/L concentration range under different material interference
Figure；
Fig. 9 is specific outcome figure of the invention.
Specific embodiment
The present invention is described in further detail with attached drawing combined with specific embodiments below.
CdTe/CdS quantum dot kit proposed by the present invention based on ethylenediamine tetra-acetic acid etching, it includes following object
Matter: 96 porous polystyrene microporous plates (black), EDTA-CdTe/CdS QDs solution, Cd2+Mark-on solution, Tris-HCl (three (hydroxyl first
Base) aminomethane-hydrochloride) buffer solution.
Specifically, the EDTA-CdTe/CdS QDs solution is: by 500 μ l Tris-HCl buffer solution (pH=
8.5), 100 μM of EDTA of the CdTe/CdS quantum dot of 4 μM of 100 μ l and 110 μ l are successively added in 2mL test tube.Use Tris-
Mixture is diluted to the half of test tube total volume by HCl buffer solution, and is placed on the black place of being protected from light and is reacted 5 minutes institutes
?.
Specifically, Tris-HCl (trishydroxymethylaminomethane-hydrochloride) buffer is: weighing 0.6057g
Tris powder is dissolved in the deionized water of certain volume, required pH is adjusted to HCl, and solution is settled to 500ml, obtained
The Tris-HCl buffer for being 10mM to concentration.
Specifically, the Cd2+Mark-on solution is: the Cd by introducing various concentration level2+All samples are prepared, are obtained
Add the Cd of various concentration level2+Originally water sample.And pH value of solution=8.5 are adjusted with Tris-HCl buffer.
The application of the cadmium ion detection kit of the above-mentioned CdTe/CdS core-shell quanta dots based on ethylenediamine tetra-acetic acid etching,
Specifically:
It takes 1ml EDTA-CdTe/CdS QDs solution in 2ml test tube, 500 μ l Cd is then added2+Mark-on solution is used
Mixture is further diluted to test tube total volume by Tris-HCl buffer solution.Solution is sufficiently mixed, black is protected from light 5 points
Clock.Completely reacted solution is added dropwise in 96 porous polystyrene microporous plates, and be put into microplate reader with the excitation wavelength of 365nm into
Row scanning obtains the fluorescence intensity of 560nm transmitted wave strong point.
Embodiment 1:
Principle such as Fig. 1 of the cadmium ion detection kit of CdTe/CdS core-shell quanta dots based on ethylenediamine tetra-acetic acid etching
Shown, EDTA generates chemical etching to CdTe/CdS quantum dot surface, generates specific Cd2+Recognition site leads to fluorescent quenching.
Then by introducing Cd2+It can identify these sites and restore the fluorescence of EDTA-CdTe/CdS QDs solution.Detect Cd2+'s
Mechanism phenogram is as shown in Figure 2.QDs, EDTA-CdTe/CdS QDs, EDTA-CdTe/CdS QDs+Cd2+The purple of three kinds of systems
Outside-visible absorption spectra figure confirms that the fluorescence of EDTA induction CdTe/CdS QDs is sudden from blue shift and the red shift of characteristic absorption peak
It goes out and Cd2+The generation for inducing the fluorescence of EDTA-CdTe/CdS QDs solution to restore.
Embodiment 2:
The preparation of EDTA-CdTe/CdS QDs solution: preparation process is by 500 μ l Tris-HCl buffer solution (pH=
8.5), the CdTe/CdS quantum dot of 4 μM of 100 μ l and different amounts of 100 μM of EDTA are successively added in 2ml test tube.Use Tris-
Mixture is diluted to the half of test tube total volume by HCl buffer solution, and is placed on the black place of being protected from light and is reacted 5 minutes institutes
?.The fluorescence intensity change of the reaction and the relationship of EDTA concentration are as shown in Figure 3.It is right when to select fluorescent quenching efficiency be 62%
The EDTA concentration answered is optium concentration.
Embodiment 3:
Characterization such as Fig. 4, figure the time required to the CdTe/CdS core-shell quanta dots detection cadmium ion of ethylenediamine tetra-acetic acid etching
Shown in 5.The reaction time of EDTA Yu CdTe/CdS QDs solution are had studied first.EDTA makes CdTe/ as can be seen from Figure 4
The Luminescent Quenching Reactions of CdS QDs are rapid, substantially completed in initial 1 minute, fluorescence is strong within the time later
Degree ratio is kept approximately constant.Therefore, 5 minutes total times is selected to be used for further to prepare EDTA-CdTe/CdS QDs solution
Experiment.Next, taking 1ml EDTA-CdTe/ to study EDTA-CdTe/CdS QDs solution and cadmium ion reaction time
Then 500 μ l Cd are added in 2ml test tube in CdS QDs solution2+Mark-on solution, with Tris-HCl buffer solution by mixture into
One step is diluted to test tube total volume.Solution is sufficiently mixed, every 1min fluorescence intensity.Fluorescence is strong as can be seen from Figure 5
Degree ratio occurs significantly to restore in first 1 minute, is kept approximately constant later.Therefore select 5min as its reaction time.It is comprehensive
Upper described, the time used in the method for the present invention detection cadmium ion is 10 minutes.
Embodiment 4:
Under the above-described reaction conditions, it takes 1ml EDTA-CdTe/CdS QDs solution in 2ml test tube, 500 μ l is then added
Cd2+Mixture is further diluted to test tube total volume with Tris-HCl buffer solution by mark-on solution.Solution is sufficiently mixed,
Black is protected from light 5 minutes.Completely reacted solution is added dropwise in 96 porous polystyrene microporous plates, and be put into microplate reader with
The excitation wavelength of 365nm is scanned the fluorescence intensity for obtaining 560nm transmitted wave strong point.The variation of fluorescence intensity is as shown in Figure 6.
Good linear such as Fig. 7, Fig. 8 institute that the kit is shown in 10-300 μ g/L and 300-1000 μ two concentration ranges of g/L
Show.Linear relation is respectively I/I0=0.0131CCd 2++ 0.97, I/I0=0.005CCd 2++ 3.559, the linearity is 0.997 He
0.985.Simultaneously as shown in figure 9, showing extraordinary specificity.
Embodiment 5:
Detection for cadmium ion in true mark-on water sample solution.By the Cd for introducing various concentration level2+Preparation is all
Sample obtains the Cd for adding three kinds of concentration levels (300,500 and 700 μ g/L)2+Originally water sample.And it is buffered with Tris-HCl
Liquid adjusts pH value of solution=8.5.It takes 1ml EDTA-CdTe/CdS QDs solution in 2ml test tube, 500 μ l Cd is then added2+Add
Solution is marked, mixture is further diluted to test tube total volume with Tris-HCl buffer solution.Solution is sufficiently mixed, black is kept away
Light reaction 5 minutes.Completely reacted solution is added dropwise in 96 porous polystyrene microporous plates, and is put into microplate reader with 365nm's
Excitation wavelength is scanned the fluorescence intensity for obtaining 560nm transmitted wave strong point.Result such as table 1 is measured by experiment:
It is to be understood that the content of present invention and specific embodiment are intended to prove the reality of technical solution provided by the present invention
Using should not be construed as limiting the scope of the present invention.Within the spirit of the invention and the scope of protection of the claims, right
Any modifications and changes that the present invention makes, both fall within protection scope of the present invention.
Claims (4)
1. a kind of cadmium ion detection kit of the CdTe/CdS core-shell quanta dots based on EDTA etching, which is characterized in that it is wrapped
Include following substance: 96 hole polystyrene micropore blackboards, EDTA-CdTe/CdS QDs solution, Cd2+Mark-on solution.
The EDTA-CdTe/CdS QDs solution is: by the Tris-HCl buffer solution of 500 μ l10mM pH=8.5,100 μ l4 μ
100 μM of EDTA of the CdTe/CdS quantum dot of M and 110 μ l are successively added in 2mL test tube.With the Tris- of 10mM pH=8.5
Mixture is diluted to the half of test tube total volume by HCl buffer solution, and is placed on the black place of being protected from light and is reacted 5 minutes institutes
?.
The Cd2+Mark-on solution is: the Cd by introducing various concentration level2+All samples are prepared, obtains and adds various concentration
Horizontal Cd2+Originally water sample；And pH value of solution=8.5 are adjusted with the Tris-HCl buffer of 10mM pH=8.5.
2. a kind of cadmium ion detection reagent of CdTe/CdS core-shell quanta dots based on EDTA etching according to claim 1
Box, which is characterized in that Tris-HCl (trishydroxymethylaminomethane-hydrochloride) buffer solution is: weighing 0.6057g
Tris powder is dissolved in deionized water, is adjusted to pH=8.5 with HCl, and solution is settled to 500ml, and obtaining concentration is
The Tris-HCl buffer of 10mM.
3. a kind of cadmium ion detection kit of the CdTe/CdS core-shell quanta dots based on EDTA etching described in claim 1 is answered
With, which is characterized in that the application specifically:
500 μ l Cd are added in EDTA-CdTe/CdS QDs solution2+Mark-on solution, it is slow with the Tris-HCl of 10mM pH=8.5
It rushes solution and mixture is diluted to 2mL.Solution is sufficiently mixed, black is protected from light 5 minutes.Completely reacted solution is added dropwise to
In 96 hole polystyrene micropore blackboards, and it is put into the excitation wavelength in microplate reader with 365nm and is scanned acquisition 560nm transmitted wave
The fluorescence intensity of strong point.
4. application according to claim 3, which is characterized in that the Cd2+Mark-on solution is preferably that true water sample mark-on is molten
Liquid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910313809.2A CN110186880A (en) | 2019-04-18 | 2019-04-18 | The cadmium ion detection kit and its application of CdTe/CdS core-shell quanta dots based on EDTA etching |
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| CN201910313809.2A CN110186880A (en) | 2019-04-18 | 2019-04-18 | The cadmium ion detection kit and its application of CdTe/CdS core-shell quanta dots based on EDTA etching |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940645A (en) * | 2019-10-29 | 2020-03-31 | 浙江大学 | Portable fluorescence sensing platform for cadmium ion detection and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110940645A (en) * | 2019-10-29 | 2020-03-31 | 浙江大学 | Portable fluorescence sensing platform for cadmium ion detection and detection method |
| CN110940645B (en) * | 2019-10-29 | 2021-10-19 | 浙江大学 | Portable fluorescence sensing platform for cadmium ion detection and detection method |
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Application publication date: 20190830 |