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Self-cleaning sampling device and online spectral detection method thereof

A sampling device and spectral detection technology, which is applied in the field of sample pretreatment and online spectral detection in analytical chemistry, can solve the problems of high cost, difficult maintenance, and difficult repair, and achieve the effects of easy maintenance and repair, flexible use, and simple structure

Inactive Publication Date: 2020-01-24
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method solves the problems of clogging, cleaning and spectral measurement better, the structure is often more complicated.
In addition to high cost, over-complex equipment is not easy to maintain, and it is easy to accumulate particles and block the filter after long-term use
The bypass sampling device in the existing online spectrum monitoring system has a complex structure and is difficult to maintain

Method used

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  • Self-cleaning sampling device and online spectral detection method thereof
  • Self-cleaning sampling device and online spectral detection method thereof
  • Self-cleaning sampling device and online spectral detection method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0048] Example 1 Near-infrared spectroscopy online monitoring of the extraction process of the active ingredients of the traditional Chinese medicine Gardenia jasminoides

[0049] The online spectral detection method of the self-cleaning sampling device of the present invention is used to carry out the online monitoring of the near-infrared spectrum in the extraction process of the Chinese medicine, and the steps are:

[0050] S100: Weigh 38g of the Chinese medicinal material Gardenia, put it into a 500mL round bottom flask, add 380mL of water into the round bottom flask, heat and boil to extract the active ingredients in the gardenia, and obtain a sample solution.

[0051] S101: put the filter head 1 of the self-cleaning sampling device of the present invention into a round bottom flask, and submerge it into the solution. The other parts of the self-cleaning sampling device of the present invention are installed according to the method described above, and connected to the ne...

example 2

[0056] Example 2 Visible spectrum online monitoring of the extraction process of the active ingredients of the traditional Chinese medicine Gardenia jasminoides

[0057] The on-line spectral detection method of the self-cleaning sampling device of the present invention is used to carry out on-line monitoring of the visible spectrum to the Chinese medicine extraction process, and the steps are:

[0058] S200: Weigh 38g of gardenia jasminoides, a Chinese medicinal material, and put them into a 500mL round-bottomed flask, and add 380mL of water into the round-bottomed flask to obtain a sample solution. And install a reflux cooling device and a thermometer on the flask.

[0059] S201: Put the filter head 1 of the self-cleaning sampling device of the present invention into a round bottom flask and submerge it into the solution. The other parts of the self-cleaning sampling device of the present invention are installed and connected to the visible spectrometer as the detector 22 . ...

example 3

[0064] Example 3 Real-time monitoring of the synthesis reaction process of bisphenol A using ultraviolet spectroscopy

[0065] The on-line spectral detection method of the self-cleaning sampling device of the present invention is used to carry out the on-line monitoring of the ultraviolet spectrum on the synthesis reaction of bisphenol A, and the steps are:

[0066] S200: In a 500ml three-necked flask, add 1.0g of sodium thiosulfate pentahydrate, then heat the flask to melt sodium thiosulfate pentahydrate, then add 0.4g of chloroacetic acid, mix well, and add 10g of sodium thiosulfate pentahydrate to the flask in turn in a water bath phenol and 160ml of chloroform, 7.0ml of 80% sulfuric acid solution. Install an electric mixer. Thus a sample solution was obtained.

[0067] S201: Put the filter head 1 of the self-cleaning sampling device of the present invention into the flask and submerge it into the solution. The other parts of the self-cleaning sampling device of the pres...

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Abstract

The invention provides a self-cleaning sampling device. The self-cleaning sampling device is used for sample solution, and comprises a filter head, a sample tank, a power pump and a sample acquisitionchannel; the filter head, the sample tank and the power pump are connected in sequence through a guide pipe; the sample acquisition channel is connected onto the part of the guide pipe at the front end or the rear end of the sample tank; a main channel valve is also arranged on the guide pipe; an acquisition channel valve is arranged on the front end of the sample acquisition channel; the power pump is set to provide power for absorbing and pushing the sample solution; and forward and reverse power can be provided. The invention further provides an online spectral detection method thereof. The sampling point of the self-cleaning sampling device in the invention is also a sample reflux point; in a period of absorbing a sample and pushing the sample, spectral detection is completed; furthermore, the purpose of cleaning the channel is realized; filtering and cleaning are realized on the same device, and completed by the same sample fluid; and thus, the self-cleaning sampling device is relatively simple and compact in structure, relatively flexible and convenient to use, and also easy to maintain and repair.

Description

technical field [0001] The invention belongs to the field of sample pretreatment and online spectrum detection of analytical chemistry, and in particular relates to a self-cleaning sampling device and an online spectrum detection method thereof. Background technique [0002] Process Analytical Technology (PAT) is a technology to design, analyze and control the production process by timely measuring the key quality and performance characteristics of raw materials and materials in process. PAT helps to grasp the status, content and properties of various materials in real time, deeply understand the working conditions and nature of each process in the industrial process, and is more conducive to the actual control of the production process. Therefore, PAT plays an important role in reducing production time, improving product quality, and increasing automation. On-line detection is an important part of PAT. Spectral technology, especially near-infrared spectroscopy, is currentl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14G01N21/31G01N21/33G01N21/3577G01N21/359G01N21/03
CPCG01N1/14G01N21/03G01N21/31G01N21/33G01N21/3577G01N21/359G01N2001/1418
Inventor 杜一平张飞宇李龙康启迪马云花
Owner EAST CHINA UNIV OF SCI & TECH