Method for identifying thermal decomposition product of perfluorinated compound

A technology of perfluorinated compounds and identification methods, which is applied in the field of identification of thermal decomposition products of perfluorinated compounds, can solve problems such as changing atmospheric radiation reserves and disturbing the earth's environment, and achieves ecological security, low price, and simple and easy process Effect

Inactive Publication Date: 2018-10-12
JINAN UNIVERSITY
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Problems solved by technology

Other studies have shown that perfluorocarbon gases can permanently change the rad...

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  • Method for identifying thermal decomposition product of perfluorinated compound
  • Method for identifying thermal decomposition product of perfluorinated compound

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Embodiment 1

[0025] Such as Figure 1-Figure 2 Shown, the present invention comprises the following steps to the identification method of perfluorinated compound thermal decomposition product:

[0026] The decomposition or evaporation temperature of the target perfluorinated compound was determined by a thermogravimetric-differential thermal analyzer (TG-DTA).

[0027] Control the temperature range of the thermogravimetric-differential thermal analyzer test between room temperature and 600 degrees, with a heating rate of 5 degrees per minute, and change the atmosphere of the thermal reaction by passing three different gases: oxygen, nitrogen and air; Thermogravimetry is used to determine the temperature at which the selected perfluorinated compound reacts in different atmospheres, and its thermal behavior at different temperatures is determined by combining the endothermic or exothermic peaks of the differential thermal map.

[0028] Put the perfluorinated compound into the quartz tube 1,...

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Abstract

The invention discloses a method for identifying a thermal decomposition product of a perfluorinated compound. The method comprises determining a decomposition or evaporation temperature of a target perfluorinated compound by a thermogravimetric-differential thermal analyzer, putting the perfluorinated compound into a quartz tube, placing the quartz tube with the perfluorinated compound to the center of a furnace, carrying out heating, after the reaction, stopping furnace work and gas feeding, carrying out collection, concentration and detection on the perfluorinated compound thermal decomposition product, and carrying out analysis through a Q-TOF and thermogravimetric infrared mass spectrometer. The identifying method is simple and easy and can be used for identifying the perfluorinated compound products in refuse burning. The method provides the basis for fate of the perfluorinated compound products in refuse burning, guarantees ecological security, has important environmental, social and economic significances and can be widely used.

Description

technical field [0001] The invention relates to a method for identifying thermal decomposition products of perfluorinated compounds. Background technique [0002] Perfluorinated compounds are a class of man-made organic compounds with high stability. They are neither hydrophilic nor lipophilic, and have very unique properties. Therefore, they are widely used in textiles (such as: waterproof clothing), paper (such as: food packaging Paper), furniture, Teflon products, carpets and fire extinguishing foam and other industrial and civil fields. From 1970 to 2002, it was a period of large-scale application of perfluorinated compounds. It is estimated that about 122,500 tons of POSF were produced and most of them were used in daily products. However, due to the detection of these compounds in water, soil, air, organisms, food and human samples, their environmental hazards and human exposure risks have been paid more and more attention. In 2009, PFOS and its main precursors were ...

Claims

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Application Information

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IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 王飞黄建坤路星雯
Owner JINAN UNIVERSITY
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