CN106596486A - Inorganic perovskite quantum dot probe, production method thereof, and mercury ion detection method - Google Patents
Inorganic perovskite quantum dot probe, production method thereof, and mercury ion detection method Download PDFInfo
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Abstract
The invention discloses an inorganic perovskite quantum dot probe, a production method thereof, and a mercury ion detection method. The production method comprises the following steps: mixing halide of group IA element with halide of lead, and grinding the halides to obtain uniformly mixed powder; dissolving the powder in a polar solvent in a stirring state; adding two or more surface ligand solutions in a continuous stirring state; adding toluene in a standing state until obtained system is in a supersaturated state, standing the system for a certain time to precipitate crystals, and filtering the crystals to obtain inorganic perovskite quantum dot crystals; and dissolving the inorganic perovskite quantum dot crystals in a non-polar solvent to obtain the inorganic perovskite quantum dot probe. The method for detecting the concentration of divalent mercury ions by using the inorganic perovskite quantum dot probe is easy to operate, and realizes rapid and highly-sensitive identification of the divalent mercury ions, and the detection limit is 1.72711 * 10<-6> mol/L.
Description
Technical field
The present invention relates to field of chemical detection, more particularly to a kind of inorganic perovskite quantum dot probe and preparation method and inspection
The method for surveying dimercurion concentration.
Background technology
In recent years, inorganic perovskite quanta point material became the newcomer in " quantum dot family ", not only because its have it is glimmering
Light wavelength of transmitted light is narrow, glow color can reconcile the prominent physical and chemical performance such as quantum yield height, and its biochemical
Can also there is unrivaled characteristic：Such as good bio-compatibility, low cytotoxicity.These superior properties cause inorganic calcium
Titanium ore quantum dot probe has wide application prospect in the fields such as biochemical and optical analysiss detection.
Dimercurion is the environmental poisonous substance of a kind of serious harm human body and animal health, the chlor-alkali work with hydrargyrum as raw material
In industry, electronics industry, plastics industry, measurement instrument industry and mercurous pesticide industry production process produce waste water containing dimercurion,
Waste gas and waste residue may affect to be up to decades by enrichment on the generation mercury pollution of environment on this area.It gives people body band
The disease come is potentially included：There is not independently shake, irritability, stutter, timid, anxiety, uneasiness, unstable, emotional, think of in extremity
Not want to concentrate, hypomnesis, the symptom such as depression.At present in environment the assay method of dimercurion mainly using etc. from
Daughter atom emission spectrometry, mass spectrography or electrochemical process etc..But the instrument of the needs costliness that these methods have, what is had is not suitable for
Field assay is done, some method sensitivity, selectivity can not meet detection and require.
Therefore, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of inorganic perovskite quantum dot probe and
Method of the preparation method with dimercurion concentration is detected, it is intended to solve the instrument of the needs costliness that existing method has, have not
Field assay is suitably done, some method sensitivity, selectivity can not meet the problem that detection is required.
Technical scheme is as follows：
A kind of preparation method of inorganic perovskite quantum dot probe, wherein, including：
Step A, the halogenide of the halogenide of IA races element and lead is mixed, be then ground, the powder being uniformly mixed
End；
Step B, powder is dissolved in polar solvent under stirring；
Step C, continuation add two or more surface ligand solution under above-mentioned stirring；
Step D, under static condition, add toluene to system be in hypersaturated state, then stand certain hour separate out crystal after,
Again Jing is filtered, and obtains inorganic perovskite quantum dot crystal；
Step E, the inorganic perovskite quantum dot crystal for preparing is dissolved in non-polar solven, obtains inorganic perovskite quantum dot
Probe.
The preparation method of described inorganic perovskite quantum dot probe, wherein, in step A, IA races element is
One kind in lithium, sodium, potassium, rubidium, caesium；The halogenide of IA races element and the halogenide mixing mol ratio of lead are 1:1~1:10.
The preparation method of described inorganic perovskite quantum dot probe, wherein, in step B, the polar solvent is
N, N- dimethyl sulfoxide, N,N-dimethylformamide, glacial acetic acid, methanol, ethanol, ethylene glycol, isopropanol, 2- isopropanols, aniline,
Acetonitrile, acetone, pyridine, dioxane, tetrahydrofuran, butyl acetate, valerone, double ethylene glycol bisthioglycolate ethylethers,
One or more in 3,3- dimethyl-2-butanones, quinoline, hexamethyl phosphoramide；The volume of the polar solvent is 10 ~ 500
ml。
The preparation method of described inorganic perovskite quantum dot probe, wherein, in step C, the surface ligand is molten
Liquid be oleyl amine, Oleic acid, 1- 18-amine., tri octyl phosphine, tributylphosphine, trioctyl phosphine oxide, n- dodecyl mereaptan, dihydrolipoic acid,
Dithiothreitol, DTT, Polyethylene Glycol dihydrolipoic acid ester, polymethylacrylic acid-N, N- dimethylaminoethyls, sodium citrate, gelatin,
One kind in Polyetherimide, polyvinylpyrrolidone, polyvinyl alcohol；The amount that the surface ligand solution is added is polar solvent
The 1 ~ 20% of volume.
The preparation method of described inorganic perovskite quantum dot probe, wherein, in step D, what the toluene was added
Measure as 100 ~ 1000 ml；Time of repose is 5 ~ 30 minutes.
The preparation method of described inorganic perovskite quantum dot probe, wherein, in step E, the non-polar solven
For benzene, carbon tetrachloride, normal hexane, isobutyltrimethylmethane., toluene, dichloromethane, diphenyl ether, chloroform, dichloroethanes, Carbon bisulfide, hexamethylene
One or more in alkane, hexane, petroleum ether.
The preparation method of described inorganic perovskite quantum dot probe, wherein, in step E, the inorganic perovskite
The mass range of quantum dot crystal is 0.05 ~ 1mg, and the volume of non-polar solven is 10 ~ 100 ml.
A kind of inorganic perovskite quantum dot probe, wherein, using as above arbitrary described inorganic perovskite quantum dot probe
Preparation method be prepared from.
A kind of method for detecting dimercurion concentration using inorganic perovskite quantum dot probe as above, wherein,
Including：
The linear relationship of step S, the fluorescence intensity for setting up inorganic perovskite quantum dot probe solution and dimercurion concentration, leads to
Cross and calculate linear relationship equation；
Step T, in inorganic perovskite quantum dot probe solution, add containing dimercurion solution to be measured, detection described two
The fluorescence intensity of valency mercury ion, the linear relationship equation drawn according to step S determines the dense of dimercurion in solution to be measured
Degree.
The method that described inorganic perovskite quantum dot probe detects dimercurion concentration, wherein, step S is concrete
Including：The inorganic perovskite quantum dot probe solution that six groups of concentration is 0.005 mg/ml is prepared, a certain amount of dimercurion is added
Solution, makes the dimercurion ultimate density in inorganic perovskite quantum dot probe solution be respectively 0,8 × 10-6、2×10-5、8
×10-5、2×10-4、3×10-4Mol/L, surveys respectively the fluorescence intensity of above-mentioned six groups of solution, by being calculated linear relationship side
Formula y=1.72711 × 10-6+ 1962.14x, wherein, x is the concentration of dimercurion, and y is the fluorescence intensity of solution.
Beneficial effect：The present invention is by by the halogenide mixed grinding of the halogenide of IA races element and lead, being then dissolved in pole
Property solvent in, and add surface ligand solution, add toluene until supersaturation, stand the crystal for separating out be re-dissolved in it is nonpolar molten
In agent, inorganic perovskite quantum dot probe is prepared, the probe can realize quick, highly sensitive knowledge to dimercurion
Not.
Description of the drawings
Fig. 1 is the inorganic perovskite quantum dot probe solution in the embodiment of the present invention 1 under different dimercurion concentration
The relation schematic diagram of fluorescence intensity and fluorescence exciting wavelength.
Fig. 2 is that the fluorescence intensity of inorganic perovskite quantum dot probe solution in the embodiment of the present invention 1 is dense with dimercurion
The linear relationship schematic diagram of degree.
Specific embodiment
The present invention provides the side of a kind of inorganic perovskite quantum dot probe and preparation method and detection dimercurion concentration
Method, to make the purpose of the present invention, technical scheme and effect clearer, clear and definite, below the present invention is described in more detail.Should
Work as understanding, specific embodiment described herein only to explain the present invention, is not intended to limit the present invention.
The present invention provides a kind of preparation method preferred embodiment of inorganic perovskite quantum dot probe, wherein, including：
Step A, the halogenide of the halogenide of IA races element and lead is mixed, be then ground, the powder being uniformly mixed
End；
Step A is specifically, by the halogenide of the halogenide of IA races element and lead with certain molar ratio in lapping device
（Such as mortar）Middle mixing, is then ground, the pressed powder being uniformly mixed.Wherein, IA races element can be
One kind in lithium, sodium, potassium, rubidium, caesium, preferred IA races element is lithium；The halogen can be the one kind in chlorine, bromine, iodine, excellent
The halogen of choosing is bromine；The halogenide of IA races element and the halogenide mixing mol ratio of lead can be 1:1~1:10, preferably
Mol ratio is 1:1.
Step B, powder is dissolved in polar solvent under stirring；
Step B is specifically, by the powder for mixing in stirring（Such as magnetic agitation）Under be dissolved in the polarity of certain volume
In solvent.Wherein, the polar solvent can be N, N- dimethyl sulfoxide, DMF, glacial acetic acid, methanol, second
Alcohol, ethylene glycol, isopropanol, 2- isopropanols, aniline, acetonitrile, acetone, pyridine, dioxane, tetrahydrofuran, butyl acetate, 2,6-
One kind in valerone, double ethylene glycol bisthioglycolate ethylethers, 3,3- dimethyl-2-butanones, quinoline, hexamethyl phosphoramide etc.
Or it is various, preferred polar solvent be N, N- dimethyl sulfoxide；The volume of the polar solvent be 10 ~ 500 ml, preferred pole
Property solvent volume be 50 ml.Mixing time is 10 ~ 60 minutes, and preferred mixing time is 20 minutes；Mixing speed is 50 ~ 500
Rpm, preferred mixing speed is 150 rpm.
Step C, continuation add surface ligand solution under above-mentioned stirring；
Step C is specifically, continue under above-mentioned stirring, to add a certain amount of surface to match somebody with somebody with given pace syringe pump
Liquid solution.Wherein, the surface ligand solution can be oleyl amine, Oleic acid, 1- 18-amine., tri octyl phosphine, tributylphosphine, trioctylphosphine
Phosphine oxide, n- dodecyl mereaptan, dihydrolipoic acid, dithiothreitol, DTT, Polyethylene Glycol dihydrolipoic acid ester, polymethylacrylic acid-N,
Two kinds or two in N- dimethylaminoethyls, sodium citrate, gelatin, Polyetherimide, polyvinylpyrrolidone, polyvinyl alcohol etc.
More than kind, preferred surface ligand solution is oleyl amine and 1- 18-amine., and the amount that oleyl amine is added is the 5 ~ 20% of polar solvent volume,
It is preferred that the 20% of polar solvent volume, drop rate scope is 0.1 ~ 0.5 ml/min, preferably 0.25 ml/min；1- 18-amine. drips
The volume of addition is the 1 ~ 10%, the 4% of preferred polar solvent volume of polar solvent volume, and drop rate scope is 0.1 ~ 0.8
Ml/min, preferably 0.1 ml/min.
Step D, under static condition, add toluene to system to be in hypersaturated state, then stand certain hour separate out it is brilliant
After body, then Jing is filtered, and obtains inorganic perovskite quantum dot crystal.
Step D adds the toluene of certain volume specifically, under static condition, makes system in hypersaturated state,
Certain hour is stood again separates out crystal, then Jing is filtered, and obtains inorganic perovskite quantum dot crystal.Wherein, the toluene is added
Measure as 100 ~ 1000 ml, preferably 250 ml；Time of repose is 5 ~ 30 minutes, preferably 10 minutes.
Step E, above-mentioned inorganic perovskite quantum dot crystal is dissolved in non-polar solven, obtains inorganic perovskite quantum dot
Probe.
Step E by a certain amount of inorganic perovskite quantum dot crystal for preparing specifically, be dissolved in certain volume
In non-polar solven, inorganic perovskite quantum dot probe is obtained；Wherein, the non-polar solven can be benzene, carbon tetrachloride, just
Hexane, isobutyltrimethylmethane., toluene, dichloromethane, diphenyl ether, chloroform, dichloroethanes, Carbon bisulfide, hexamethylene, hexane, petroleum ether etc.
In one or more, preferred non-polar solven be normal hexane；The mass range of the inorganic perovskite quantum dot crystal is
0.05 ~ 1mg, preferred 0.1mg, the volume of non-polar solven is 10 ~ 100 ml, preferred 20ml.Based on said method, the present invention is also
A kind of inorganic perovskite quantum dot probe is provided, it adopts the preparation side of as above arbitrary described inorganic perovskite quantum dot probe
Method is prepared from.
The present invention also provides one kind and detects dimercurion concentration using inorganic perovskite quantum dot probe as above
Method, wherein, including：
The linear relationship of step S, the fluorescence intensity for setting up inorganic perovskite quantum dot probe solution and dimercurion concentration, leads to
Cross and calculate linear relationship equation；
Step S is added specifically, prepare the inorganic perovskite quantum dot probe solution that six groups of concentration are 0.005 mg/ml
A certain amount of dimercurion solution, make the dimercurion ultimate density in inorganic perovskite quantum dot probe solution be respectively 0,
8×10-6、2×10-5、8×10-5、2×10-4、3×10-4Mol/L, surveys respectively the fluorescence intensity of above-mentioned six groups of solution, by meter
Calculation obtains linear relationship equation y=1.72711 × 10-6+ 1962.14x, wherein, x is dimercurion concentration, and y is solution
Fluorescence intensity.Wherein fluorescence exciting wavelength scope is 300 ~ 380 nm, and preferably 350 nm are excited.
Step T, in inorganic perovskite quantum dot probe solution, add containing dimercurion solution to be measured, detect institute
The fluorescence intensity of dimercurion is stated, the linear relationship equation drawn according to step S determines dimercurion in solution to be measured
Concentration.
Step T is specifically, choose that to measure its fluorescence by above-mentioned steps S containing any concentration dimercurion solution strong
Degree, brings above-mentioned gained linear relationship equation into, you can obtain dimercurion concentration.
Loaded down with trivial details with existing plasma atomic emission spectrometry, mass spectrography and electrochemical process these method pretreatment process,
Analysis detection time is long, and detection sensitivity is not high to be compared, and said method of the present invention is easily operated, and repeatability is high, and detection is fast
Speed and sensitivity height, can realize quick, high sensitivity identification, test limit as little as 1.72711 × 10 to dimercurion-6 mol/
L。
Below by embodiment, the present invention is described in detail.
Embodiment 1
The preparation of red inorganic perovskite quantum dot probe：By the halogenide of the halogenide of IA races element and lead with certain mole
Ratio mixes in mortar, and wherein IA races element is potassium element；Halogen is bromo element；Potassium bromide mixes mol ratio with lead bromide
For 1:1.
The pressed powder for mixing is dissolved in the polar solvent of certain volume in magnetic agitation state, wherein polar solvent
For N, N- dimethyl sulfoxide；Polar solvent volume is 50 ml, and the magnetic agitation time is 20 minutes, and magnetic stirring speed is 150
rpm。
Under above-mentioned magnetic agitation, a certain amount of two kinds of surface ligand solution is added with syringe pump with given pace, wherein
Surface ligand solution is oleyl amine and 1- 18-amine., and oleyl amine Deca volume is the 20% of polar solvent volume, and drop rate scope is
0.25 ml/min.1- 18-amine. Deca volume is the 4% of polar solvent volume, and drop rate scope is 0.1 ml/min.
Under static condition, certain volume toluene is added, make solution in hypersaturated state, stood certain hour and obtain nothing
Machine perovskite quantum dot crystal.Volume of toluene is 250 ml, and time of repose is 10 minutes.
Above-mentioned a certain amount of inorganic perovskite quantum dot crystal is dissolved in a certain amount of non-polar solven, inorganic perovskite is obtained
Quantum dot probe.Wherein non-polar solven is normal hexane.Inorganic perovskite quantum dot crystal mass be 0.1 mg, normal hexane volume
For 20 ml.
Six groups are prepared on the premise of keeping inorganic perovskite quantum dot probe solution concentration to be 0.005 mg/ml constant,
A certain amount of dimercurion solution is added, the dimercurion ultimate density in inorganic perovskite quantum dot probe solution is distinguished
For 0,8 × 10-6、2×10-5、8×10-5、2×10-4、3×10-4Mol/L, surveys above-mentioned six groups of standard solution fluorescence intensities（a-
f）, as shown in figure 1, by being calculated linear relationship equation y=1.72711 × 10-6+ 1962.14x, as shown in Figure 2.Its
Middle fluorescence exciting wavelength scope is excited for 350 nm.
Selection measures its fluorescence intensity containing dimercurion solution by above-mentioned 6th one step process, brings above-mentioned gained into linear
Governing equation, you can obtain dimercurion concentration.
Embodiment 2
（1）The preparation of blue inorganic perovskite quantum dot probe：By the halogenide of the halogenide of IA races element and lead necessarily rubbing
You mix ratio in mortar, and wherein IA races element is potassium element；Halogen is bromo element；Potassium bromide mixes mole with lead bromide
Than for 1:1.2.
（2）The pressed powder for mixing is dissolved in the polar solvent of certain volume in magnetic agitation state, wherein polarity
Solvent is N, N- dimethyl sulfoxide；Solvent volume is 50 ml, and the magnetic agitation time is 20 minutes, and magnetic stirring speed is 150
rpm。
（3）Under above-mentioned magnetic agitation, a certain amount of two or more surface is added with syringe pump with given pace
Ligand solution, wherein surface ligand solution include oleyl amine and 1- 18-amine..Oleyl amine Deca volume is the 20% of polar solvent volume,
Drop rate is 0.35 ml/min.1- 18-amine. Deca volume is the 4% of polar solvent volume, and drop rate is 0.15 ml/
min。
（4）Under static condition, certain volume toluene is added, make solution in hypersaturated state, stood certain hour and obtain
To inorganic perovskite quantum dot crystal.Volume of toluene is 250 ml, and time of repose is 10 minutes.
（5）Above-mentioned a certain amount of inorganic perovskite quantum dot crystal is dissolved in a certain amount of non-polar solven, inorganic calcium is obtained
Titanium ore quantum dot probe.Wherein non-polar solven is normal hexane.Inorganic perovskite quantum dot crystal mass be 0.1 mg, normal hexane
Volume is 20 ml.
（6）It is the constant premises of 0.005 mg/ml that six groups are prepared inorganic perovskite quantum dot probe solution concentration is kept
Under, add a certain amount of dimercurion solution to make the dimercurion ultimate density in inorganic perovskite quantum dot probe solution point
Wei 0,8 × 10-6、2×10-5、8×10-5、2×10-4、3×10-4Mol/L, surveys above-mentioned six groups of standard solution fluorescence intensities, leads to
Cross and be calculated linear relationship equation y=1.72711 × 10-6+1962.14x.Wherein fluorescence exciting wavelength scope is 350 nm
Excited.
（7）Selection measures its fluorescence intensity containing dimercurion solution by above-mentioned 6th one step process, brings above-mentioned gained into
Linear relationship equation, you can obtain dimercurion concentration.
Embodiment 3
（1）The preparation of green phosphor perovskite quantum dot probe：By the halogenide of the halogenide of IA races element and lead necessarily rubbing
You mix ratio in mortar, and wherein IA races element is sodium element；Halogen is chlorine element；Sodium Chloride mixes mole with lead chloride
Than for 1:10.
（2）The pressed powder for mixing is dissolved in the polar solvent of certain volume in magnetic agitation state, wherein polarity
Solvent is hexamethyl phosphoramide；Solvent volume is 50 0ml, and the magnetic agitation time is 60 minutes, and magnetic stirring speed is 50rpm.
（3）Under above-mentioned magnetic agitation, a certain amount of two or more surface is added with syringe pump with given pace
Ligand solution, wherein surface ligand solution include Oleic acid and polyvinyl alcohol.Oleic acid Deca volume is the 5% of polar solvent volume, drop
Rate of acceleration is 0.1ml/min.Polyvinyl alcohol Deca volume is the 10% of polar solvent volume, and drop rate is 0.8 ml/min.
（4）Under static condition, certain volume toluene is added, make solution in hypersaturated state, stood certain hour and obtain
To inorganic perovskite quantum dot crystal.Volume of toluene is 1000ml, and time of repose is 30 minutes.
（5）Above-mentioned a certain amount of inorganic perovskite quantum dot crystal is dissolved in a certain amount of non-polar solven, inorganic calcium is obtained
Titanium ore quantum dot probe.Wherein non-polar solven is benzene.Inorganic perovskite quantum dot crystal mass is 1mg, and benzene volume is 100
ml。
（6）It is the constant premises of 0.005 mg/ml that six groups are prepared inorganic perovskite quantum dot probe solution concentration is kept
Under, add a certain amount of dimercurion solution to make the dimercurion ultimate density in inorganic perovskite quantum dot probe solution point
Wei 0,8 × 10-6、2×10-5、8×10-5、2×10-4、3×10-4Mol/L, surveys above-mentioned six groups of standard solution fluorescence intensity (a-
F), by being calculated linear relationship equation y=1.72711 × 10-6+1962.14x.Wherein fluorescence exciting wavelength is 380
nm。
（7）Selection measures its fluorescence intensity containing dimercurion solution by above-mentioned 6th one step process, brings above-mentioned gained into
Linear relationship equation, you can obtain dimercurion concentration.
In sum, a kind of inorganic perovskite quantum dot probe of the invention and preparation method are dense with detection dimercurion
The method of degree, loaded down with trivial details with existing plasma atomic emission spectrometry, mass spectrography and electrochemical process these method pretreatment process,
Analysis detection time is long, and detection sensitivity is not high to be compared, and said method of the present invention is easily operated, and repeatability is high, and detection is fast
Speed and sensitivity height, can realize quick, high sensitivity identification, test limit as little as 1.72711 × 10 to dimercurion-6 mol/
L。
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, and for those of ordinary skills, can
To be improved according to the above description or be converted, all these modifications and variations should all belong to the guarantor of claims of the present invention
Shield scope.
Claims (10)
1. a kind of preparation method of inorganic perovskite quantum dot probe, it is characterised in that include：
Step A, the halogenide of the halogenide of IA races element and lead is mixed, be then ground, the powder being uniformly mixed
End；
Step B, powder is dissolved in polar solvent under stirring；
Step C, continuation add two or more surface ligand solution under above-mentioned stirring；
Step D, under static condition, add toluene to system be in hypersaturated state, then stand certain hour separate out crystal after,
Again Jing is filtered, and obtains inorganic perovskite quantum dot crystal；
Step E, above-mentioned inorganic perovskite quantum dot crystal is dissolved in non-polar solven, obtains inorganic perovskite quantum dot and visit
Pin.
2. the preparation method of inorganic perovskite quantum dot probe according to claim 1, it is characterised in that step A
In, IA races element is the one kind in lithium, sodium, potassium, rubidium, caesium；The halogenide of IA races element and the halogenide of lead are mixed
It is 1 to close mol ratio:1~1:10.
3. the preparation method of inorganic perovskite quantum dot probe according to claim 1, it is characterised in that step B
In, the polar solvent be N, N- dimethyl sulfoxide, DMF, glacial acetic acid, methanol, ethanol, ethylene glycol, isopropyl
Alcohol, 2- isopropanols, aniline, acetonitrile, acetone, pyridine, dioxane, tetrahydrofuran, butyl acetate, valerone,
One or more in double ethylene glycol bisthioglycolate ethylethers, 3,3- dimethyl-2-butanones, quinoline, hexamethyl phosphoramide；The polarity is molten
The volume of agent is 10 ~ 500 ml.
4. the preparation method of inorganic perovskite quantum dot probe according to claim 1, it is characterised in that step C
In, the surface ligand solution be oleyl amine, Oleic acid, 1- 18-amine., tri octyl phosphine, tributylphosphine, trioctyl phosphine oxide, positive 12
Mercaptan, dihydrolipoic acid, dithiothreitol, DTT, Polyethylene Glycol dihydrolipoic acid ester, polymethylacrylic acid-N, N- dimethylamino second
One kind in ester, sodium citrate, gelatin, Polyetherimide, polyvinylpyrrolidone, polyvinyl alcohol；The surface ligand solution
The amount of addition is the 1 ~ 20% of polar solvent volume.
5. the preparation method of inorganic perovskite quantum dot probe according to claim 1, it is characterised in that step D
In, the amount that the toluene is added is 100 ~ 1000 ml；Time of repose is 5 ~ 30 minutes.
6. the preparation method of inorganic perovskite quantum dot probe according to claim 1, it is characterised in that step E
In, the non-polar solven is benzene, carbon tetrachloride, normal hexane, isobutyltrimethylmethane., toluene, dichloromethane, diphenyl ether, chloroform, two chloroethenes
One or more in alkane, Carbon bisulfide, hexamethylene, hexane, petroleum ether.
7. the preparation method of inorganic perovskite quantum dot probe according to claim 1, it is characterised in that step E
In, the mass range of the inorganic perovskite quantum dot crystal is 0.05 ~ 1mg, and the volume of non-polar solven is 10 ~ 100 ml.
8. a kind of inorganic perovskite quantum dot probe, it is characterised in that using the inorganic calcium titanium as described in claim 1 ~ 7 is arbitrary
The preparation method of ore deposit quantum dot probe is prepared from.
9. a kind of using the method that as claimed in claim 8 inorganic perovskite quantum dot probe detects dimercurion concentration,
Characterized in that, including：
The linear relationship of step S, the fluorescence intensity for setting up inorganic perovskite quantum dot probe solution and dimercurion concentration, leads to
Cross and calculate linear relationship equation；
Step T, in inorganic perovskite quantum dot probe solution, add containing dimercurion solution to be measured, detection described two
The fluorescence intensity of valency mercury ion, the linear relationship equation drawn according to step S determines the dense of dimercurion in solution to be measured
Degree.
10. the method that inorganic perovskite quantum dot probe according to claim 9 detects dimercurion concentration, its feature
It is that step S is specifically included：The inorganic perovskite quantum dot probe solution that six groups of concentration is 0.005 mg/ml is prepared, plus
Enter a certain amount of dimercurion solution, be respectively the dimercurion ultimate density in inorganic perovskite quantum dot probe solution
0、8×10-6、2×10-5、8×10-5、2×10-4、3×10-4Mol/L, surveys respectively the fluorescence intensity of above-mentioned six groups of solution, passes through
It is calculated linear relationship equation y=1.72711 × 10-6+ 1962.14x, wherein, x is dimercurion concentration, and y is solution
Fluorescence intensity.
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| CN108469427A (en) * | 2018-02-07 | 2018-08-31 | 大连大学 | A method of the plasma-induced intracellular absolutely calcium ion concentration of characterization |
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| CN111024672A (en) * | 2020-01-06 | 2020-04-17 | 云南大学 | Method for detecting mercury ions based on fluorescent perovskite liquid-liquid extraction |
| CN111024672B (en) * | 2020-01-06 | 2021-06-11 | 云南大学 | Method for detecting mercury ions based on fluorescent perovskite liquid-liquid extraction |
| CN111189810A (en) * | 2020-01-10 | 2020-05-22 | 云南大学 | Method for ultrasensitively and rapidly detecting mercury ions in water by using water-soluble inorganic cesium lead perovskite |
| CN111189810B (en) * | 2020-01-10 | 2022-10-14 | 云南大学 | Method for ultrasensitively and rapidly detecting mercury ions in water by using water-soluble inorganic cesium lead perovskite |
| CN113237857A (en) * | 2021-05-10 | 2021-08-10 | 齐鲁工业大学 | Application of perovskite quantum dots in detection of content of heavy metal ions in edible oil and detection method |
| CN113237857B (en) * | 2021-05-10 | 2024-01-30 | 齐鲁工业大学 | Application of perovskite quantum dot in detection of heavy metal ion content in edible oil and detection method |
| CN114235771A (en) * | 2021-12-23 | 2022-03-25 | 重庆大学 | Sensing detection method for heavy metal mercury ion detection |
| CN114235771B (en) * | 2021-12-23 | 2023-10-03 | 重庆大学 | Sensing detection method for heavy metal mercury ion detection |
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