CN111413311A - Water content detection reagent and method for detecting water content in liquid - Google Patents

Water content detection reagent and method for detecting water content in liquid Download PDF

Info

Publication number
CN111413311A
CN111413311A CN202010332041.6A CN202010332041A CN111413311A CN 111413311 A CN111413311 A CN 111413311A CN 202010332041 A CN202010332041 A CN 202010332041A CN 111413311 A CN111413311 A CN 111413311A
Authority
CN
China
Prior art keywords
water content
detecting
liquid
organic solvent
reagent
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.)
Pending
Application number
CN202010332041.6A
Other languages
Chinese (zh)
Inventor
王允军
翟伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Xingshuo Nanotech Co Ltd
Original Assignee
Suzhou Xingshuo Nanotech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Xingshuo Nanotech Co Ltd filed Critical Suzhou Xingshuo Nanotech Co Ltd
Priority to CN202010332041.6A priority Critical patent/CN111413311A/en
Publication of CN111413311A publication Critical patent/CN111413311A/en
Priority to CN202010964775.6A priority patent/CN111929287A/en
Priority to PCT/CN2020/133400 priority patent/WO2021212845A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Abstract

The application discloses a water content detection reagent and a method for detecting water content in liquid. A water content detecting reagent comprising: an organic solvent; a. the4BX6The perovskite-type quantum dots are dispersed in the organic solvent, wherein A is monovalent cation, B is divalent cation, and X is monovalent anion; the water content detection reagent is used for detecting the water content in liquid. The water content detection reagent is combined with a fluorescence detection technology, has high detection sensitivity and long service life, and can effectively detect the water content of as low as 0.03 wt% in liquid.

Description

Water content detection reagent and method for detecting water content in liquid
Technical Field
The application relates to the field of detection, in particular to a water content detection reagent and a method for detecting water content in liquid.
Background
With the development of scientific research and the progress of production technology, the quantitative analysis of water in liquid is listed as one of the basic items of physical and chemical analysis of various substances, and is used as an important quality index of liquid. The determination of the water content in the liquid has important significance in the chemical field, the detection field and the like.
The conventional method for detecting moisture in a substance includes: karl fischer moisture determination, coulomb moisture determination, dew point moisture determination, microwave moisture meter determination, infrared moisture determination, and the like. These methods are not suitable for, or cannot be applied at all for, detecting the water content in a liquid;
the development of a detection reagent or a detection method for the water content in a liquid is of great significance.
Disclosure of Invention
In view of the above technical problems, an object of the present application is to provide a detection reagent that can effectively detect the water content in a liquid.
One aspect of the present application provides a water content detection reagent, comprising:
an organic solvent;
A4BX6the perovskite-type quantum dots are dispersed in the organic solvent, wherein A is monovalent cation, B is divalent cation, and X is monovalent anion;
the water content detection reagent is used for detecting the water content in liquid.
In one embodiment, the organic solvent has a polarity parameter of less than 3.
In one embodiment, the organic solvent comprises at least one of n-pentane, toluene, n-hexane, cyclohexane, n-heptane, cyclooctane.
In one embodiment, a is in the organic solvent4BX6The concentration of the perovskite quantum dots is less than 3 wt%.
In one embodiment, a is in the organic solvent4BX6The concentration of the perovskite quantum dots is 0.1 wt% to 2 wt%.
In one embodiment, a is Cs+Or Rb+B is Pb2+、Ge2+Or Sn2+Wherein X is Cl-、Br-Or I-At least one of (1).
In one embodiment, said a4BX6The perovskite quantum dot comprises Cs4PbCl6、Rb4PbCl6、Cs4GeCl6、Rb4GeCl6、Cs4SnCl6、Rb4SnCl6、Cs4PbBr6、Rb4PbBr6、Cs4GeBr6、Rb4GeBr6、Cs4SnBr6、Rb4SnBr6、Cs4PbI6、Rb4PbI6、Cs4GeI6、Rb4GeI6、Cs4SnI6、Rb4SnI6、Cs4PbBr3I3、Rb4PbBr3I3、Cs4PbCl3Br3、Rb4PbCl3Br3、Cs4SnBr3I3、Rb4SnBr3I3、Cs4SnCl3Br3、Rb4SnCl3Br3、Cs4GeBr3I3、Rb4GeBr3I3、Cs4GeCl3Br3Or Rb4GeCl3Br3At least one of (1).
Another aspect of the present application provides a method for detecting water content in a liquid, comprising the steps of:
mixing the water quantity detection reagent with the liquid to be detected, and detecting the fluorescence intensity of the liquid to be detected;
and comparing the fluorescence intensity with a water content-fluorescence intensity standard curve of the water amount detection reagent to determine the water content in the liquid to be detected.
In one embodiment, the mixing process is for a time period of 1 to 10 minutes.
In one embodiment, the main component of the liquid to be detected is a non-polar organic solvent.
Has the advantages that:
1. the present application makes use of A without fluorescence effect4BX6ABX with high fluorescence efficiency generated by perovskite quantum dots after meeting water3The principle of perovskite quantum dots, thereby realizing a detection reagent which is easy to detect the water content in liquid.
2、A4BX6The perovskite quantum dots are dispersed in an organic solvent with small polarity parameters, so that external water vapor can be effectively inhibited from acting on A4BX6The effect of perovskite quantum dots.
3. The water content detection reagent is combined with a fluorescence detection technology, has high detection sensitivity, and can effectively detect the water content of as low as 0.03 wt% in liquid.
Drawings
FIG. 1 is a graph showing a standard curve of water content versus fluorescence intensity of a water content detecting reagent according to an embodiment of the present application.
Detailed Description
The technical solutions in the examples will be described in detail below with reference to the embodiments of the present application. It should be noted that this embodiment is only a partial way, not a complete one.
As used herein, a statement such as "at least one (one)" modifies an entire list of elements as it precedes or succeeds the list of elements without modifying individual elements of the list. Unless otherwise defined, all terms (including technical and scientific terms) in the specification may be defined as commonly understood by one of ordinary skill in the art. Terms defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and may not be interpreted in an idealized or overly formal sense unless expressly so defined. Furthermore, unless expressly stated to the contrary, the terms "comprises" and "comprising," when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof. Thus, the above wording will be understood to mean that the stated elements are included, but not to exclude any other elements.
As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The term "or" means "and/or".
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms.
As used herein, "about" or "approximately" includes the stated value and is meant to be within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art in view of the measurement in question and the error associated with measurement of the particular quantity (i.e., limitations of the measurement system). For example, "about" may mean a deviation from the stated value within one or more standard deviation ranges, or within ± 10%, ± 5%.
In one embodiment of the present application, there is provided a water content detecting reagent including an organic solvent; a dispersed in an organic solvent4BX6The perovskite quantum dot comprises a perovskite quantum dot; the water content detection reagent is used for detecting the water content in the liquid.
In the present application, by using A4BX6The perovskite quantum dot can generate ABX when meeting water3The water content detection reagent is prepared by the perovskite quantum dots and the fluorescence enhancement principle. Due to synthetically obtained A4BX6The perovskite quantum dot has no fluorescence characteristic (or is very weak and can be basically ignored), and the dispersion liquid under a certain concentration presents milk white color under the room temperature condition, but can be converted into ABX with very high fluorescence efficiency in a short time after being in contact with water3Perovskite quantum dots. Due to conversion to ABX3The quantity of the perovskite quantum dots has a direct relation with the water content in the environment to be detected, so that the water content in the liquid to be detected can be determined through the change of the fluorescence intensity.
A4BX6The perovskite quantum dots are dispersed in an organic solvent, so that the water content detection reagent is very suitable for detecting the water content in liquid. The water content detection reagent can quantitatively detect the water content in liquid, and only needs to directly mix the water content detection reagent with the liquid to be detected and then measure the change of the fluorescence intensity of the liquid during detection.
In a preferred embodiment, the organic solvent has a polarity parameter of less than 3. That is, the polarity of the organic solvent is very small. The polarity parameters of organic solvents are referred to the solvent handbook. The inventor finds that A is4BX6The perovskite quantum dots are very sensitive to water, and A can be caused by a very small amount of water4BX6The perovskite quantum dots react to cause the crystal to be recombined. When the polarity parameter of the organic solvent is less than 3, the organic solvent is a solvent havingThe compatibility between the organic solvent and water is poor, and the organic solvent can not absorb the water vapor in the air basically, so that the A can be effectively inhibited4BX6The perovskite quantum dots are affected by water vapor in the air, so that the storage and the service life of the water content detection reagent are prolonged.
The organic solvent includes, but is not limited to, n-pentane (polarity parameter 0), toluene (polarity parameter 2.4), n-hexane (polarity parameter 0.06), cyclohexane (polarity parameter 0.1), n-heptane (polarity parameter 0.2), or cyclooctane (polarity parameter 0.1). In addition, other solvents having a polarity parameter of less than 3 can be used as the organic solvent of the water content detection reagent in the present application.
In an organic solvent A4BX6The concentration of perovskite quantum dots is less than 3 wt%, more preferably between 0.1 wt% and 2 wt%. Due to A4BX6The surface of the perovskite quantum dot generally contains hydrophobic ligands such as oleylamine, oleic acid and the like, A4BX6The dispersibility of the perovskite quantum dots in an organic solvent is very good, such as 10 wt% or even 20 wt%. But when A is4BX6When the concentration of perovskite-type quantum dots is too high, although these A' s4BX6The perovskite quantum dots can be dissolved in an organic solvent, but when the perovskite quantum dots are used for a water content detection reagent, the detection accuracy of the reagent is not high. And when A is an organic solvent4BX6When the concentration of the perovskite quantum dots is less than 3 wt%, A can be ensured4BX6The perovskite quantum dots are fully and well uniformly dispersed in an organic solvent, A4BX6The probability of forming agglomeration among the perovskite quantum dots is very small, so that the detection accuracy is effectively improved.
A4BX6The average size of the perovskite quantum dots is preferably between 1 and 20 nanometers. Chemical formula A4BX6In which A is Cs+Or Rb+B is Pb2+、Ge2+Or Sn2+At least one of (1), X is Cl-、Br-Or I-At least one of (1). A. the4BX6Perovskite quantumPoints include, but are not limited to, Cs4PbCl6、Rb4PbCl6、Cs4GeCl6、Rb4GeCl6、Cs4SnCl6、Rb4SnCl6、Cs4PbBr6、Rb4PbBr6、Cs4GeBr6、Rb4GeBr6、Cs4SnBr6、Rb4SnBr6、Cs4PbI6、Rb4PbI6、Cs4GeI6、Rb4GeI6、Cs4SnI6、Rb4SnI6、Cs4PbBr3I3、Rb4PbBr3I3、Cs4PbCl3Br3、Rb4PbCl3Br3、Cs4SnBr3I3、Rb4SnBr3I3、Cs4SnCl3Br3、Rb4SnCl3Br3、Cs4GeBr3I3、Rb4GeBr3I3、Cs4GeCl3Br3Or Rb4GeCl3Br3。
A for use in this application4BX6The perovskite quantum dots can be prepared by a conventional method. For example, A4BX6The perovskite quantum dot is obtained by mixing a first precursor and a second precursor and then heating.
The first precursor is made of Cs+Or Rb+With at least one of a carboxylic acid anion, a carbonic acid anion, or a halogen anion; the second precursor is made of Pb2+、Ge2+Or Sn2+With at least one of a carboxylic acid anion or a halide anion; at least one of the first precursor and the second precursor comprises a halide anion.
In a specific embodiment of the present application, the first precursor comprises cesium oleate, rubidium oleate, cesium acetate, rubidium acetate, CsCl, CsBr, CsI, Cs2CO3、Rb2CO3At least one of RbCl or RbBr, the second precursor comprising PbCl2、PbI2、PbBr2、GeCl2、GeI2、GeBr2、SnCl2、SnI2Or SnBr2At least one of (1). However, the exemplary embodiments of the present application are not limited thereto.
In another specific embodiment of the present application, A4BX6The preparation step of the perovskite quantum dot also comprises the step of preparing the obtained A4BX6And (3) carrying out purification treatment on the perovskite quantum dots to obtain the perovskite quantum dots with high purity. These purification treatment steps are well known in the art and will not be described in detail here.
The preparation of the reagent for measuring water content is very simple, and for example, A can be directly used4BX6The perovskite quantum dots can be uniformly dispersed in an organic solvent, and it is noted that the organic solvent used is anhydrous or has a very low water content, such as less than 0.001 wt%.
In one embodiment of the present application, a method of detecting water content in a liquid is disclosed, comprising the steps of: mixing a water quantity detection reagent with liquid to be detected, and detecting the fluorescence intensity of the liquid to be detected; and then, comparing the fluorescence intensity with a standard curve of water content-fluorescence intensity of the water quantity detection reagent so as to determine the water content in the liquid to be detected.
In the application, the obvious fluorescence enhancement phenomenon is detected 1 to 10 minutes after the water quantity detection reagent is mixed with the liquid to be detected, and the fluorescence intensity can be basically maintained unchanged for a long time. The main component of the liquid to be detected is preferably a non-polar organic solvent, such as alkane, alkene, ester, etc., so that the liquid to be detected and the water amount detection reagent can be uniformly mixed in a short time, and the detection accuracy is increased, wherein the main component refers to that the content of the component in the liquid to be detected is more than 95 wt%. In a preferred embodiment, the nonpolar organic solvent in the liquid to be detected and the organic solvent in the water content detection reagent are the same substance, such as n-heptane.
The detection method using the water amount detection reagent according to some exemplary embodiments of the present application will be described in more detail below with reference to examples; however, the exemplary embodiments of the present application are not limited thereto.
Example 1:
firstly, a standard curve of water content in liquid and fluorescence intensity is prepared, and the specific process is as follows:
preparing a water content detection reagent: a certain amount of synthesized Cs4PbBr6The quantum dots are dispersed in ultra-dry 10 ml of organic solvent (n-heptane) to be uniformly dispersed, thus obtaining Cs4PbBr6A water content detection reagent having a quantum dot concentration of about 2 wt%.
Preparing a standard sample: ultra-dry 10 ml of an organic solvent (n-heptane) was measured out, and 2. mu.l, 5. mu.l, 10. mu.l, 20. mu.l, 30. mu.l, 40. mu.l, 50. mu.l, 60. mu.l, 70. mu.l, and 100. mu.l of distilled water were added thereto to obtain a series of standard samples having different water contents.
Measurement of fluorescence intensity in Standard sample 1 ml of the water content detecting reagent was mixed with the above Standard sample, respectively, and the fluorescence intensity of the mixed solution was measured after about 5 minutes, and a standard curve of the fluorescence intensity with respect to the water content in the Standard sample was prepared, as shown in FIG. 1, the linear relationship of the standard curve in the range of about 0.03 wt% to 1.5 wt% of the water content (density of water of about 1g/m L, density of n-heptane of about 0.684g/m L) was good, and R is R2The value was 0.989. The fluorescence intensity is measured by an F4500 fluorescence spectrometer, the wavelength of excitation light of the spectrometer is set to be 450nm, and the slit width values of an excitation end and an emission end of the spectrometer are both 5 nm.
And then detecting the water content in a sample to be detected, wherein the sample to be detected is n-heptane with unknown water content.
The specific detection process is as follows:
the above-mentioned 1 ml of the water content detecting reagent is mixed with 10 ml of the above-mentioned sample to be tested, and after about 5 minutes, the fluorescence intensity is tested to be about 500(a.u.), and the water content in the sample to be tested can be determined to be about 60. mu.l/10 ml by referring to the standard curve of water content-fluorescence intensity.
Although the present disclosure has been described and illustrated in greater detail by the inventors, it should be understood that modifications and/or alterations to the above-described embodiments, or equivalent substitutions, will be apparent to those skilled in the art without departing from the spirit of the disclosure, and that no limitations to the present disclosure are intended or should be inferred therefrom.

Claims (10)

1. A water content detecting reagent, comprising:
an organic solvent;
A4BX6the perovskite-type quantum dots are dispersed in the organic solvent, wherein A is monovalent cation, B is divalent cation, and X is monovalent anion;
the water content detection reagent is used for detecting the water content in liquid.
2. The reagent for detecting water content according to claim 1, wherein the polarity parameter of the organic solvent is less than 3.
3. The reagent for detecting water content according to claim 1, wherein the organic solvent comprises at least one of n-pentane, toluene, n-hexane, cyclohexane, n-heptane, and cyclooctane.
4. The reagent for detecting water content according to claim 1, wherein A is contained in the organic solvent4BX6The concentration of the perovskite quantum dots is less than 3 wt%.
5. The reagent for detecting water content according to claim 4, wherein A is contained in the organic solvent4BX6The concentration of the perovskite quantum dots is 0.1 wt% to 2 wt%.
6. The moisture content test of claim 1The test agent is characterized in that A is Cs+Or Rb+B is Pb2+、Ge2+Or Sn2+Wherein X is Cl-、Br-Or I-At least one of (1).
7. The reagent for detecting water content according to claim 6, wherein A is a4BX6The perovskite quantum dot comprises Cs4PbCl6、Rb4PbCl6、Cs4GeCl6、Rb4GeCl6、Cs4SnCl6、Rb4SnCl6、Cs4PbBr6、Rb4PbBr6、Cs4GeBr6、Rb4GeBr6、Cs4SnBr6、Rb4SnBr6、Cs4PbI6、Rb4PbI6、Cs4GeI6、Rb4GeI6、Cs4SnI6、Rb4SnI6、Cs4PbBr3I3、Rb4PbBr3I3、Cs4PbCl3Br3、Rb4PbCl3Br3、Cs4SnBr3I3、Rb4SnBr3I3、Cs4SnCl3Br3、Rb4SnCl3Br3、Cs4GeBr3I3、Rb4GeBr3I3、Cs4GeCl3Br3Or Rb4GeCl3Br3At least one of (1).
8. A method of detecting the water content of a liquid, comprising the steps of:
mixing the water amount detecting reagent according to any one of claims 1 to 7 with a liquid to be detected, and detecting the fluorescence intensity thereof;
and comparing the fluorescence intensity with a water content-fluorescence intensity standard curve of the water amount detection reagent to determine the water content in the liquid to be detected.
9. The method of claim 8, wherein the mixing is performed for a period of 1 to 10 minutes.
10. The method for detecting the water content in liquid according to claim 8, wherein the main component of the liquid to be detected is a nonpolar organic solvent.
CN202010332041.6A 2020-04-24 2020-04-24 Water content detection reagent and method for detecting water content in liquid Pending CN111413311A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202010332041.6A CN111413311A (en) 2020-04-24 2020-04-24 Water content detection reagent and method for detecting water content in liquid
CN202010964775.6A CN111929287A (en) 2020-04-24 2020-09-15 Detection reagent and content determination method
PCT/CN2020/133400 WO2021212845A1 (en) 2020-04-24 2020-12-02 Detection reagent and content determination method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010332041.6A CN111413311A (en) 2020-04-24 2020-04-24 Water content detection reagent and method for detecting water content in liquid

Publications (1)

Publication Number Publication Date
CN111413311A true CN111413311A (en) 2020-07-14

Family

ID=71492062

Family Applications (2)

Application Number Title Priority Date Filing Date
CN202010332041.6A Pending CN111413311A (en) 2020-04-24 2020-04-24 Water content detection reagent and method for detecting water content in liquid
CN202010964775.6A Pending CN111929287A (en) 2020-04-24 2020-09-15 Detection reagent and content determination method

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202010964775.6A Pending CN111929287A (en) 2020-04-24 2020-09-15 Detection reagent and content determination method

Country Status (2)

Country Link
CN (2) CN111413311A (en)
WO (1) WO2021212845A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111999271A (en) * 2020-08-12 2020-11-27 嘉兴学院 Cs4PbX6Application of perovskite nano material in detection of water content in nonpolar solvent
WO2021212845A1 (en) * 2020-04-24 2021-10-28 苏州星烁纳米科技有限公司 Detection reagent and content determination method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112986199B (en) * 2021-02-22 2022-07-15 江南大学 Fluorescence detection method for acid value in oil
CN114324061A (en) * 2021-12-30 2022-04-12 宁波南大光电材料有限公司 Method for rapidly measuring component content of high-purity diluent on line

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017040471A1 (en) * 2015-09-02 2017-03-09 Mathew Maye System and method for visualizing chemical reactions in real time
CN106905960A (en) * 2017-02-23 2017-06-30 吉林师范大学 A kind of method of regulation and control full-inorganic perovskite quantum dot light emitting wavelength
CN106770988B (en) * 2017-03-15 2019-01-29 厦门大学 Intensive polar solvent device for fast detecting based on quantum dot
CN107271409B (en) * 2017-03-30 2020-08-21 南京师范大学 Method for detecting metal ions in solution by using perovskite nanocrystal-based metal ion sensor
CN109264771B (en) * 2017-07-18 2020-07-31 苏州大学 All-inorganic halogen perovskite nanocrystal and preparation method thereof
CN108531172B (en) * 2018-05-21 2020-09-04 北京理工大学 Preparation method and application of hybrid perovskite microcrystalline luminescent material
CN109142297A (en) * 2018-08-27 2019-01-04 杭州北芯传感科技有限公司 A kind of moisture measurement test strips and preparation method thereof
CN110205112A (en) * 2019-05-31 2019-09-06 苏州星烁纳米科技有限公司 The preparation method of perovskite quantum dot composite membrane and product prepared therefrom
CN110330436B (en) * 2019-07-25 2023-05-05 苏州星烁纳米科技有限公司 Perovskite quantum dot and preparation method thereof
CN110606505B (en) * 2019-10-21 2022-03-25 江苏科技大学 Zero-dimensional halogen perovskite structure material Cs4PbBr6Preparation and use of
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
CN111413310A (en) * 2020-04-24 2020-07-14 苏州星烁纳米科技有限公司 Moisture detection test paper, preparation method thereof and water content detection method
CN111413311A (en) * 2020-04-24 2020-07-14 苏州星烁纳米科技有限公司 Water content detection reagent and method for detecting water content in liquid
CN111999271A (en) * 2020-08-12 2020-11-27 嘉兴学院 Cs4PbX6Application of perovskite nano material in detection of water content in nonpolar solvent

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021212845A1 (en) * 2020-04-24 2021-10-28 苏州星烁纳米科技有限公司 Detection reagent and content determination method
CN111999271A (en) * 2020-08-12 2020-11-27 嘉兴学院 Cs4PbX6Application of perovskite nano material in detection of water content in nonpolar solvent

Also Published As

Publication number Publication date
CN111929287A (en) 2020-11-13
WO2021212845A1 (en) 2021-10-28

Similar Documents

Publication Publication Date Title
CN111413311A (en) Water content detection reagent and method for detecting water content in liquid
CN107271409B (en) Method for detecting metal ions in solution by using perovskite nanocrystal-based metal ion sensor
CN106959290A (en) A kind of Ratio-type rare-earth fluorescent probe and the application for detecting bacillus anthracis biomarker
CN106905538B (en) A kind of zinc-containing metal organic framework materials and its preparation method and application
EP1346220B1 (en) Sensor for luminescence optical determination of an analyte
Pénicaud et al. Oxygen quantification methods and application to the determination of oxygen diffusion and solubility coefficients in food
WO2023060873A1 (en) Rare-earth-element-doped carbon quantum dot ratio fluorescent probe, preparation method therefor and application thereof
CN110108679A (en) A kind of organophosphorus pesticide based on Copper-cladding Aluminum Bar carbon nano dot is without enzyme ratio fluorescent new detecting method
CN108872175A (en) A kind of green fluorescence carbon quantum dot and preparation method, application
Chen et al. A homogeneous capillary fluorescence imprinted nanozyme intelligent sensing platform for high sensitivity and visual detection of triclocarban
Cano-Raya et al. Irreversible optical sensor for mercury determination based on tetraarylborate decomposition
WO2019052419A1 (en) Apparatus and system for detecting content of target ions, preparation method, method for measuring content of target, and kit
WO2010105850A2 (en) Test element for determining a body fluid and measurement method
CN111999276A (en) Method for preparing luminous europium-based metal organic framework probe and application thereof
CN110274898A (en) Using His@ZIF-8/Tb3+The method of composite material measurement anthrax spores biomarker DPA content
CN109293651A (en) The ratio fluorescent probe compound and its detection method of zinc ion are detected in a kind of aqueous solution
DE10121999A1 (en) Method and device for the determination of volatile substances in solution
Yang et al. Development of an iodine sensor based on fluorescence energy transfer
RU2473885C2 (en) Quantitative analysis of thiourea and sodium fluorescein simultaneously present in formation water
Duong et al. A new look at an old classic: implementation of a SERS-based water hardness titration
Li et al. Rapid detection of urine chloride enabled by ion exchange in hydrophilic lead halide perovskite nanocrystals
CN105418629B (en) A kind of Rhodamine Derivatives as pH probes application
Shamsipur et al. Development of a PVC-membrane ion-selective bulk optode, for UO 2 2+ ion, based on tri-n-octylphosphine oxide and dibenzoylmethane
Han et al. Fluorescence sensor based on optimized quantum yield manganese-carbon polymer dots and smartphone-integrated sensing platform for tetracycline detection
CN109668885B (en) Detection method of procymidone in vegetables

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
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20200714

WD01 Invention patent application deemed withdrawn after publication