Tracer agent for tracing detection on polar solvent and tracing detection method

A polar solvent and tracer technology, applied in the field of detection and analysis, can solve the problems of large amount of chemical tracer, low test resolution, large detection error, etc., to achieve high economic value and social value, accurate tracer detection High degree of resistance, the effect of preventing adhesion and adhesion

Pending Publication Date: 2021-02-05
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chemical tracers include soluble inorganic salts, fluorescent dyes, halogenated hydrocarbons and alcohols with low relative molecular weight, etc. The amount of chemical tracers is usually large, the cost is high, they are easily adsorbed by rocks, and the detection error is large. Low resolution, poor adaptability and selectivity, environmental and safety issues; isotope tracers include radioactive isotope tracers, stable isotope tracers, isotope tracers must be professional construction personnel, and special equipment should be used for detection , its analysis and testing methods are complex and expensive, which is not conducive to large-scale application; tracer tracers need to use high-end analytical equipment such as inductively coupled plasma mass spectrometry, which is very expensive

Method used

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  • Tracer agent for tracing detection on polar solvent and tracing detection method
  • Tracer agent for tracing detection on polar solvent and tracing detection method
  • Tracer agent for tracing detection on polar solvent and tracing detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] 1. Preparation of tracer:

[0085]Preparation of carbon quantum dots: Add 60mg of rhodamine B, 20mL of 0.3M aqueous sodium hydroxide solution, 3mL of PEG800 and 1.2g of phloroglucinol into the polytetrafluoroethylene lining, and put them into the reactor for hydrothermal reaction , the reaction temperature is 180°C, the reaction time is 10h, after the reaction is complete, it is naturally cooled to obtain the crude reactant liquid, and then the crude reactant liquid is subjected to centrifugal purification treatment to obtain carbon quantum dots with a wavelength of 578nm and a half-peak width of 40nm. 84%, emit orange-yellow light, and the fluorescence emission spectrum is as follows figure 1 As shown, PEG1000 groups are bonded to the surface of the carbon quantum dots, and the content of the surface-bonded PEG1000 groups in the carbon quantum dots is 16%.

[0086] The purified carbon quantum dot solution was used as a tracer, and the maximum solubility of the tracer ...

Embodiment 2

[0111] 1. Preparation of Tracers

[0112] Add 52mg of sodium fluorescein, 20mL of 0.3M aqueous sodium hydroxide solution, 3mL of PEG 800 and 1g of citric acid into the polytetrafluoroethylene lining, and put them into the reactor for hydrothermal reaction. The reaction temperature is 195°C. Time 10h, natural cooling after the reaction is complete, the reactant crude liquid is obtained, and then the reactant crude liquid is subjected to centrifugal purification treatment to obtain carbon quantum dots with a wavelength of 515nm, a half-maximum width of 36nm, and a quantum yield of 86%. The fluorescence emission spectrum is as follows: image 3 As shown, the carbon quantum dot surface is bonded with PEG800 groups, and in the carbon quantum dots, the content of the surface bonded PEG800 groups is 15%.

[0113] The purified carbon quantum dot solution was used as a tracer, and the maximum solubility of the tracer in water was 300g / L under the condition of 15-150°C, so as to carry o...

Embodiment 3

[0138] 1. Preparation of tracer:

[0139] Preparation of carbon quantum dots: add 40mg of rhodamine 6G, 20mL of 0.1M aqueous sodium hydroxide solution, and 3g of PEG-COOH (the molecular weight of PEG is 800) into the polytetrafluoroethylene lining, and put it into the reaction kettle for hydrothermal Reaction, the reaction temperature is 160°C, the reaction time is 5h, after the reaction is complete, it is naturally cooled to obtain the crude reactant liquid, and then the crude reactant liquid is subjected to centrifugal purification treatment to obtain carbon quantum dots with a wavelength of 556nm and a half-peak width of 42nm. rate of 80%, emitting yellow light, the fluorescence emission spectrum is shown as Figure 5 As shown, PEG-COOH groups are bonded to the surface of the carbon quantum dots, and the content of the surface-bonded PEG-COOH groups in the carbon quantum dots is 16%.

[0140] The purified carbon quantum dot solution was used as a tracer, and the maximum so...

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Abstract

The invention provides a tracer agent for tracing detection on a polar solvent and a tracing detection method, wherein the tracer agent comprises carbon quantum dots, and the carbon quantum dots havehydrophilicity. The tracer agent can be used for tracing detection in a solution with a polar solvent, is high in detection accuracy, wide in application range, low in economic cost and safe and environment-friendly to use, and effectively widens the tracing application field of the carbon quantum dots.

Description

technical field [0001] The application belongs to the field of detection and analysis, and in particular relates to a tracer used for trace detection of polar solvents and a trace detection method. Background technique [0002] For a long time, the commonly used tracers in the development of wading projects mainly include chemical tracers, isotope tracers, and trace substance tracers. Although they are widely used, there are also disadvantages of varying degrees: [0003] Chemical tracers include soluble inorganic salts, fluorescent dyes, halogenated hydrocarbons and alcohols with low relative molecular weight, etc. The amount of chemical tracers is usually large, the cost is high, they are easily adsorbed by rocks, and the detection error is large. Low resolution, poor adaptability and selectivity, environmental and safety issues; isotope tracers include radioactive isotope tracers, stable isotope tracers, isotope tracers must be professional construction personnel, and sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65C09K11/02B82Y20/00B82Y40/00G01M3/22G01N21/64
CPCC09K11/65C09K11/025B82Y20/00B82Y40/00G01N21/64G01M3/22
Inventor 翟伟刘东强张思源
Owner SUZHOU XINGSHUO NANOTECH CO LTD
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