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Automatic instillation micro-extraction device and method for sensing, supplementing and regularly collecting liquid drops

A technology for collecting liquid and dripping, which is applied in liquid solution solvent extraction, solvent extraction, measuring device and other directions, which can solve the problems of continuous analysis of difficult and multiple groups of pyrolysis products, accurate qualitative analysis of difficult and complex components, and complex combination devices. , to achieve the effect of improving droplet stability, fast extraction speed, and eliminating experimental errors

Pending Publication Date: 2021-08-03
海南红塔卷烟有限责任公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pyrolysis products in thermogravimetric-mass spectrometry and thermogravimetric-infrared infrared are not chromatographically separated, and it is difficult to accurately and qualitatively analyze the complex components that escape at the same time
Although thermogravimetry-gas chromatography-mass spectrometry solves the problem of product separation and qualitative analysis, the combined device is complex and it is difficult to complete the continuous analysis of multiple groups of pyrolysis products in one experiment

Method used

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  • Automatic instillation micro-extraction device and method for sensing, supplementing and regularly collecting liquid drops

Examples

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Effect test

Embodiment 1

[0045] An automatic infusion micro-extraction device for inductive replenishment and timing collection of liquid droplets, including a controller 1, a liquid replenishment unit, a collection unit, an extraction unit, an internal standard volatilization unit, and a thermogravimetric unit;

[0046] The controller 1 is connected to the first peristaltic pump 2 and the second peristaltic pump 20, the electric lifting arm 22, the turntable 24, the optical fiber transmitting end 8, the optical fiber receiving end 12, the magnetic stirrer 14 and the temperature control layer 25 respectively through lines. ;

[0047] The liquid replenishment unit includes a first peristaltic pump 2, a reagent bottle 3, an optical fiber transmitting end 8, an optical fiber receiving end 12, and a supplementary pipeline 26; the reagent bottle 3 communicates with the bottom of the extraction head 5 through the supplementary pipeline 26, and the extraction The head 5 presents an inverted cone shape and is...

Embodiment 2

[0054] Extraction and enrichment analysis of thermogravimetric escaped substances from cigarette paper by automatic drip microextraction

[0055] Step 1, choose ethanol as the extract solution and add it to the reagent bottle, choose isopropanol dissolved in ethanol to prepare an internal standard solution with a concentration of 0.5%, and add it to the internal standard bottle;

[0056] Step 2, open the thermogravimetric furnace body, add 200 mg of cigarette paper sample into the crucible, and close the thermogravimetric furnace body

[0057] Step 3, select nitrogen as carrier gas A, turn on carrier gas A and set the flow rate to 500mL / min;

[0058] Step 4, select air as carrier gas B, turn on carrier gas B and set the flow rate to 200mL / min;

[0059] Step 5, turn on the magnetic stirrer and set the stirring speed to 300r / min, turn on the temperature control layer and set the control temperature to 10°C;

[0060] Step 6, set the speed of the first peristaltic pump 2 to 20r / ...

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Abstract

The invention relates to an automatic instillation micro-extraction device and method for sensing, supplementing and regularly collecting liquid drops, and belongs to the technical field of analysis and detection. The device comprises a controller, a liquid supplementing unit, a collecting unit, an extraction unit, an internal standard volatilization unit and a thermal analysis unit. The device has the advantages of being simple, convenient, stable, efficient and high in automation degree, manual intervention is not needed any more after instillation microextraction is started, the device senses and monitors the volume change of extraction liquid drops all the time and automatically supplements and maintains the liquid drops to be in a full state, all the extraction liquid drops are automatically collected according to the set timing event sequence to be stored in an independent collection bottle, new extraction liquid is used for cleaning and emptying a collection pipeline when the liquid drops are collected, so that the liquid drops of one or more extraction sections are automatically collected, experimental errors possibly caused by human factors are completely eradicated, and the liquid drop stability, the detection accuracy and the data parallelism of instillation micro-extraction analysis detection are effectively improved, and a more stable and reliable technical means is provided for extraction and analysis of thermogravimetric escaped components.

Description

technical field [0001] The invention belongs to the technical field of chemical analysis and testing, and relates to an automatic infusion micro-extraction device and method for inductive supplementation and timing collection of liquid droplets. Background technique [0002] As one of the traditional thermal analysis techniques, thermogravimetric / differential thermal analysis is a thermal method that uses a thermobalance to measure the mass of a substance, the mass increase of heat change, mass loss, or the relationship between heat absorption, heat release, and temperature using a thermobalance. Analytical technology, with the advantages of easy operation, high accuracy, sensitivity and rapidity, and micro-quantization of samples, has been widely used in inorganic, organic, chemical, metallurgy, pharmaceutical, food, tobacco, energy and biological fields. Thermogravimetry can be used in conjunction with other analytical instruments to analyze thermogravimetric escaped subst...

Claims

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Application Information

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IPC IPC(8): B01D11/04G01F22/00G01N5/04G01N25/20
CPCB01D11/0488B01D11/0492B01D11/0496G01F22/00G01N5/04G01N25/20
Inventor 朱文辉秦云华杨柳申钦鹏吴淑定赵杨刘占博刘凌璇文杰梁生龙
Owner 海南红塔卷烟有限责任公司
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