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Formaldehyde, methanol and N,N dimethyl hydroxyamine coexisting anlytical method

A technology of dimethylhydroxylamine and analysis method, which is applied in the field of qualitative and quantitative analysis, and can solve problems such as analysis that has not been reported.

Inactive Publication Date: 2006-10-25
SHANGHAI UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, there is no report on the analysis of formaldehyde, methanol and N, N-diethylhydroxylamine coexisting

Method used

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  • Formaldehyde, methanol and N,N dimethyl hydroxyamine coexisting anlytical method
  • Formaldehyde, methanol and N,N dimethyl hydroxyamine coexisting anlytical method
  • Formaldehyde, methanol and N,N dimethyl hydroxyamine coexisting anlytical method

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Embodiment 1

[0025] The analysis process and steps in this embodiment are described as follows:

[0026] (1) Prepare a simulated sample and prepare a mixed solution containing formaldehyde, methanol and N,N-dimethylhydroxylamine;

[0027] (2) Using gas chromatography using GDX-401 packed column (φ3mm×2m) combined with a hydrogen flame ionization detector, correctly load the GDX-401 packed column into the chromatograph, vent nitrogen, and adjust its flow to 20ml / After 20 minutes, let air pass and adjust the flow to 300ml / min; set the column temperature to 130℃, the vaporization chamber temperature to 160℃, and the detector temperature to 160℃; the set gain is 10 9 , The attenuation is zero. Operating column temperature, vaporization chamber and detector temperature;

[0028] (3) When the hydrogen flame ionization detector reaches the set temperature of 160℃, vent hydrogen and adjust the hydrogen flow rate to 80ml / min: use an electronic ignition gun to ignite at the detector outlet, and then sl...

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Abstract

The invention relates to formaldehyde, methanol and N, N-dimethyl hydroxylamine coexisting analysis method. It adopts air phase chromatography of GCX-401 filling column and hydrogen flame ionization detector and rapidly analizing formaldehyde, methanol and N, N-dimethyl hydroxylamine. The invention is easy to operate, and has high accuracy. It could take rapid analysis to the coexisting formaldehyde, methanol and N, N-dimethyl hydroxylamine.

Description

Technical field [0001] The invention relates to a qualitative and quantitative analysis method when formaldehyde, methanol and N,N-dimethylhydroxylamine coexist, and belongs to the technical field of organic chemistry analysis. Background technique [0002] With the development of nuclear power industry, the reprocessing of nuclear fuel has attracted widespread attention. N, N-dimethylhydroxylamine is a new salt-free reducing agent that is expected to be used in nuclear fuel reprocessing. However, the reprocessing of spent fuel is carried out in a strong radiation environment. Under this condition, N,N-dimethylhydroxylamine will undergo radiolysis, and the organic matter produced by radiolysis may be formaldehyde, methanol, formic acid and nitrate. These organic substances may affect the separation of nuclear fuel. Therefore, it is necessary to analyze the composition and content of organic matter in the solution after N,N-dimethylhydroxylamine irradiated, so as to provide an imp...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N30/26G01N30/68
Inventor 王锦花包伯荣吴明红张先业叶国安郑卫芳孙喜莲党俐王秋云
Owner SHANGHAI UNIV
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