Method for detecting content of phenylethanolamine A by utilizing CdTe quantum dot
A technology of phenylethanolamine and quantum dots, applied in the field of analytical chemistry, can solve the problems that cannot be used to detect the content of phenylethanolamine A, and achieve the effects of short detection time, low detection limit and low analysis cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0037] A kind of preparation method of the present embodiment CdTe quantum dots, comprises the steps:
[0038] (1) Weigh 0.1276g of tellurium powder and 0.1100g of sodium borohydride respectively, add 1mL of high-purity water, quickly seal the seal with a parafilm, and insert the injection needle to communicate with the outside world at the same time, carry out the stirring reaction for 4 hours under ice-water bath conditions, and let it stand 10min, get NaHTe solution;
[0039] The reaction equation is as follows:
[0040] 4NaBH 4 +2Te+7H 2 O=2NaHTe+Na 2 B 4 o 7 +14H 2 ↑
[0041] (2) Weigh 0.07gCdCl 2 2.5H 2 Dissolve O in 190mL high-purity water, then add 80μL mercaptopropionic acid to form a suspension system;
[0042](3) First use 0.1mol / L NaOH solution to adjust the pH of the suspension system to 11, pass high-purity nitrogen gas for 30 minutes, and add 200 μL of the NaHTe solution under nitrogen protection to control the concentration of Cd in the solution. 2+ ...
Embodiment 2
[0056] A kind of preparation method of the present embodiment CdTe quantum dots, comprises the steps:
[0057] (1) Weigh 0.12g of tellurium powder and 0.1200g of sodium borohydride respectively, add 2mL of high-purity water, quickly seal the seal with a parafilm, and insert the injection needle to communicate with the outside world at the same time, carry out the stirring reaction for 4 hours under ice-water bath conditions, and let it stand 10min, get NaHTe solution;
[0058] (2) Weigh 0.08gCdCl 2 2.5H 2 Dissolve O in 180mL high-purity water, then add 100μL mercaptopropionic acid to form a suspension system;
[0059] (3) First use 0.1mol / L NaOH solution to adjust the pH of the suspension system to 10, pass high-purity nitrogen gas for 30 minutes, and under nitrogen protection, add 500 μL of the NaHTe solution to control the concentration of Cd in the solution. 2+ 、HTe - , The molar ratio of mercaptopropionic acid is 0.9:0.7:2.8 to obtain the CdTe quantum dot precursor;
...
Embodiment 3
[0068] A kind of preparation method of the present embodiment CdTe quantum dots, comprises the steps:
[0069] (1) Weigh 0.13g tellurium powder and 0.1300g sodium borohydride respectively, add 4mL high-purity water, quickly seal the seal with a parafilm, insert the injection needle to communicate with the outside world at the same time, carry out the stirring reaction for 4h under ice-water bath conditions, and let it stand 10min, get NaHTe solution;
[0070] (2) Weigh 0.06gCdCl 2 2.5H 2 O was dissolved in 200mL high-purity water, and then mercaptopropionic acid was added to form a suspension system;
[0071] (3) First use 0.1mol / L NaOH solution to adjust the pH of the suspension system to 12, pass high-purity nitrogen gas for 30 minutes, and under nitrogen protection, add 400 μL of the NaHTe solution to control the concentration of Cd in the solution. 2+ 、HTe - , The molar ratio of mercaptopropionic acid is 0.8:0.6:2.5 to obtain the CdTe quantum dot precursor;
[0072] (...
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com