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A method for detecting hydrazine hydrate

A technology of hydrazine hydrate and detection solution, which is applied in the measurement of color/spectral characteristics, material analysis by observing the influence on chemical indicators, and analysis by making materials undergo chemical reactions, etc., which can solve the complex, time-consuming, and Unable to realize rapid and trace detection of hydrazine hydrate and other problems, to achieve the effect of simple and fast operation and low detection limit

Active Publication Date: 2020-02-18
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the detection methods of hydrazine hydrate mainly include chemical titration, liquid chromatography, electrochemical detection, etc., but these detection methods have the disadvantages of complicated detection operation, need for related equipment, and time-consuming.
It is impossible to realize the fast and trace detection of hydrazine hydrate

Method used

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  • A method for detecting hydrazine hydrate
  • A method for detecting hydrazine hydrate
  • A method for detecting hydrazine hydrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of detection solution: Add 3 mg of elemental sulfur powder to 3 mL of NMP and stir with a magnetic force at 500 r / min for 10 minutes to obtain a detection solution;

[0034] (2) Add 100ul of 0.1wt% hydrazine hydrate aqueous solution to the detection solution, stir it magnetically at 500r / min, observe the color change of the solution during the stirring process, and immediately (within 30s) carry out ultraviolet light on the solution after the mixed solution turns blue. Visible light detection, the results are as follows figure 1 , Figure 5 shown;

[0035] (3) Add different volumes of 0.1wt% hydrazine hydrate aqueous solution to the detection solution, stir with 500r / min magnetic force, observe the color change of the solution during the stirring process, and immediately (within 30s) test the solution after the mixed solution turns blue. UV-visible light detection, and the function plot of the peak value of the absorption peak and the amount of hydrazi...

Embodiment 2

[0039] (1) Preparation of detection solution: Add 3 mg of elemental sulfur powder into 3 mL of DMF and stir with a magnetic force at 500 r / min for 10 minutes to obtain a mixed detection solution;

[0040] (2) Add 10ul of 0.1wt% hydrazine hydrate aqueous solution to the detection solution, stir it magnetically at 500r / min, observe the color change of the solution during the stirring process, and immediately (within 30s) carry out ultraviolet light on the solution after the mixed solution turns blue. Visible light detection, the results are as follows Figure 4 shown.

Embodiment 3

[0042] (1) Preparation of detection solution: Add 3 mg of elemental sulfur powder to 3 mL of DMA with magnetic stirring at 500 r / min and mix for 10 minutes to obtain a mixed detection solution

[0043] (2) Add 10ul of 0.1wt% hydrazine hydrate aqueous solution to the detection solution, stir it magnetically at 500r / min, observe the color change of the solution during the stirring process, and immediately (within 30s) carry out ultraviolet light on the solution after the mixed solution turns blue. Visible light detection, the results are as follows Figure 4 shown.

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Abstract

The invention relates to a quick and repeatable method for detecting trace amounts of hydrazine hydrate, which belongs to the technical field of inorganic detection. The invention provides a method for detecting a trace amount of hydrazine hydrate. The specific method is: adding the substance to be tested into a mixed detection solution of a solvent and elemental sulfur and stirring evenly. If the mixed detection solution can display blue color, it indicates that the substance to be tested contains Hydrazine hydrate; Wherein, the solvent is N,N-dimethylformamide, N,N-dimethylacetamide, N-methylpyrrolidone or dimethyl sulfoxide, and the mass fraction of elemental sulfur in the mixed detection solution is 0.0001% to 1%. The method for detecting trace amounts of hydrazine hydrate of the present invention can realize the trace detection of hydrazine hydrate repeatedly and rapidly.

Description

technical field [0001] The invention relates to a quick and repeatable method for detecting trace amounts of hydrazine hydrate, which belongs to the technical field of inorganic detection. Background technique [0002] Hydrazine hydrate is a commonly used industrial raw material, and its application is extremely wide. As an important fine chemical raw material, hydrazine hydrate is mainly used for the synthesis of foaming agents; it is also used for cleaning treatment of deoxidation and decarbonation of boilers and reactors In the pharmaceutical industry, it is used to produce anti-tuberculosis and anti-diabetic drugs; in the pesticide industry, it is used to produce herbicides, plant growth regulators, fungicides, insecticides, and rodenticides; in addition, it can also be used to produce rocket fuel, Diazo fuel, rubber additives, etc. The application fields of hydrazine hydrate are still expanding. [0003] Although hydrazine hydrate has many application fields, hydrazin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78G01N21/31G01N21/33
CPCG01N21/31G01N21/33G01N21/78
Inventor 杨伟喻鹏翟元明包睿莹刘正英杨鸣波
Owner SICHUAN UNIV
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