Thermal desorption, gas-phase separation and thermal cracking system based on ethylation derivation of methyl mercury

A technology of ethylation derivatization and gas-phase separation, applied in the field of analysis devices, can solve the problems of high degree of integration, difficulty in combining detectors, high price, etc., and achieves the effects of reducing cost, simple operation and saving analysis time.

Active Publication Date: 2017-02-22
OCEAN UNIV OF CHINA
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Problems solved by technology

[0004] At present, foreign companies have produced a methylmercury analyzer that integrates the above three parts, but the whole set of equipment has the disadvantages of high price, high degree of integratio

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  • Thermal desorption, gas-phase separation and thermal cracking system based on ethylation derivation of methyl mercury
  • Thermal desorption, gas-phase separation and thermal cracking system based on ethylation derivation of methyl mercury
  • Thermal desorption, gas-phase separation and thermal cracking system based on ethylation derivation of methyl mercury

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Embodiment 1

[0026] like Figure 1-5 As shown, in the embodiment of the present invention, the methylmercury thermal analysis-gas phase separation-pyrolysis system based on ethylation derivative includes a thermal analysis part, a gas phase separation part, a thermal cracking part and other parts. This system integrates thermal analysis, gas phase separation and pyrolysis, and can be controlled separately, with low cost, simple operation and high analysis efficiency.

[0027] The thermal analysis part includes: thermal analysis heating wire switch 4, thermal analysis heating wire control time switch 5, thermal analysis heating wire voltage regulator 7, thermal analysis heating wire voltage regulator knob 9, thermal analysis heating wire 10, thermal analysis Heating wire support 18, Tenax adsorption tube 20. Its working procedure is to adjust the thermal analysis heating wire voltage regulator 7 by adjusting the thermal analysis heating wire voltage regulator knob 9 on the pressure regulat...

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Abstract

The invention discloses a thermal desorption, gas-phase separation and thermal cracking system based on ethylation derivation of methyl mercury, comprising a thermal desorption part, a gas-phase separation part, a thermal cracking part, a gas flowmeter, a Teflon FEP pipeline and a pressure regulating and temperature control switch chamber, wherein the thermal desorption part comprises a thermal desorption heater strip switch, a thermal desorption heater strip time control switch, a thermal desorption heater strip pressure regulator, a pressure regulating knob of the thermal desorption heater strip pressure regulator, a thermal desorption heater strip and a Tenax adsorption pipe; the gas-phase separation part comprises a heater jacket, a heater jacket switch, an OV-3 packed column and a heater jacket temperature control plate; and the thermal cracking part comprises a thermal cracking heater strip switch, a thermal cracking heater strip time control switch, a thermal cracking heater strip pressure regulator, a pressure regulating knob of the thermal cracking heater strip pressure regulator, a thermal cracking heater strip and a quartz pipe. The system realizes the aim of integration of thermal desorption, gas-phase separation and thermal cracking devices, and simultaneously, each part can be individually operated, thereby saving the analysis time, having low manufacturing cost and greatly reducing experiment cost.

Description

technical field [0001] The invention relates to the technical field of analysis devices, in particular to a thermal analysis-gas phase separation-pyrolysis system based on methylmercury derived from ethylation. Background technique [0002] Mercury and its compounds are a class of highly toxic persistent toxic pollutants, among which methylmercury is a highly toxic form. During the analysis of methylmercury, gas chromatography or high performance liquid chromatography is often used for separation. Although high-performance liquid chromatography can achieve better separation results, the dilution of the mobile phase makes the detection limit of the method higher, and the reduction of the detection limit through the extraction method greatly increases the analysis cost. Gas chromatography is easy to combine with purge and trap technology, extraction technology and other methods to achieve the advantages of simple operation, low interference and high sensitivity. [0003] At ...

Claims

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Application Information

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IPC IPC(8): G01N30/06G01N30/12G01N30/14
CPCG01N30/06G01N30/12G01N30/14G01N2030/065G01N2030/125
Inventor 李雁宾陈路锋韩晓晓刘畅
Owner OCEAN UNIV OF CHINA
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