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Apparatus used for solid absorption stirrer thermal analyzer

An adsorption stirring rod and thermal desorption technology, which is applied to measuring devices, instruments, scientific instruments, etc., can solve the problems of complicated devices, high cost, and difficulty in popularization and use, and achieves the effects of low power consumption, convenient operation and low manufacturing cost.

Inactive Publication Date: 2008-06-11
烟台海诚高科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whole device is complicated, the cost is very high, and it is difficult to popularize and use

Method used

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  • Apparatus used for solid absorption stirrer thermal analyzer
  • Apparatus used for solid absorption stirrer thermal analyzer
  • Apparatus used for solid absorption stirrer thermal analyzer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the sample transfer tube 5 is connected to the analysis tube 1 through the sealed ferrule 6, the single-closed liner tube 4 is put into the resolver 1, and the analysis purge gas path 13 and the auxiliary gas path 12 are connected, and then the resolver Placed on the top of the gas chromatographic inlet, the sample transfer tube 5 passes through the injection pad of the inlet and inserts 20 cm into the retention spacer pre-column. The flows of the analytical purge gas path 13 and the auxiliary gas path 12 are regulated through the steady flow valves 11 and 11'. Put the extraction and adsorption rod 2 into the thermal analysis liner 4, set the graphite O-ring 7, press the upper cover 9 of the resolver connected with the purge gas pipeline 13, and the resolver will be resolved under the action of the fastening nut. Tube 1 is sealed. The start temperature controller 10 heats the resolver through the heating body 3 . The substances adsorbed on ...

Embodiment 2

[0033] The standard sample of polycyclic aromatic hydrocarbons in water was extracted for 120 minutes with an adsorption stirring rod 2 with an extraction stationary phase film thickness of 100 μm, and then put into the inner liner 4 . Use the invented device to rise from room temperature to 280°C within 3 minutes and then perform chromatographic analysis after analyzing for 5 minutes. The purge gas and auxiliary gas are hydrogen, and the flow rates are 5mL and 1mL respectively. The analysis spectrum is as follows figure 2 shown.

Embodiment 3

[0035] After extracting the pesticide residues in the tea leaves with an adsorption stirring rod 2 with an extraction stationary phase film thickness of 40 μm for 180 minutes, put it into the inner liner 4, use the device in this invention to heat up to 260 ° C within 3 minutes and analyze for 5 minutes Afterwards, chromatographic analysis was carried out, and the purge gas and auxiliary gas were helium, and the flow rates were 3mL and 1mL, respectively. The analyzed components enter the capillary gas chromatography-mass spectrometer for analysis and detection, and the analysis spectrum is as follows image 3 shown.

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Abstract

The present invention relates to sample detecting technology, and is one kind of thermal analysis device for combined use with gas chromatograph for the analysis trace matter the solid phase micro extracting stirring rod or the solid adsorbent adsorbs and enriched. The thermal analysis device consists of analysis tube, analysis lining tube, sealing ring, analysis blowing gas path, auxiliary blowing gas path, heating body and temperature controlling element, and sample transmitting pipe. The solid phase micro extracting stirring rod or the solid desorbent completes analysis in the analysis lining tube, and the heat analysis tube and the gas chromatograph sample inlet complete the heating of the sample transmission line. The device has the features of small size, controllable heating speed, complete analysis, low power consumption, convenient operation, etc.

Description

technical field [0001] The invention relates to the technical field of sample detection, belongs to analytical chemical sample pretreatment devices, and is a thermal analysis device used in conjunction with gas chromatography, which is used for thermal analysis of solid-state adsorption stirring rods and solid-state adsorbents. It is also used in thermal analysis devices coupled with gas chromatography-mass spectrometry / spectroscopy, etc., for thermal analysis of solid-state adsorption stirring rods and solid-state adsorbents. Background technique [0002] Solid phase microextraction (SPME) provides an important sample pretreatment technique for the analysis of trace organic pollutants. Due to the fact that it does not use organic solvents and is easy to operate, this technology has been developed rapidly. In the process of solid-phase microextraction, the extraction and fixation of organic pollutants are extracted and enriched, and the enriched substances are resolved from...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/04
Inventor 关亚风刘文民王海龙王涵文赵景红
Owner 烟台海诚高科技有限公司
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