Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Comprehensive pretreatment instrument for chemical analysis of samples

A sample and sample collection technology, applied in the field of analytical chemistry, can solve the problems of ion contamination, test range limitation, manual operation error, etc., to reduce the concentration of the body, ensure the reproducibility, and improve the accuracy.

Inactive Publication Date: 2016-12-07
COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding acid-base reagents for neutralization can easily cause ion pollution, and increase the concentration of salt ions, which is not conducive to detection and analysis, and affects test results; in addition, ion exchange will cause saturation of ion occupancy, so its application is largely restricted. Constraints, regeneration and loss of materials will take a lot of time, high application costs, etc.
[0004] The traditional dilution method is manual dilution, which is cumbersome to operate. If the pipette or volumetric flask used in the dilution process is contaminated or not cleaned, it will directly lead to a change in the concentration of the diluted sample; manual operation during the dilution process will also have certain problems. error
Directly affect test results, and it is difficult to guarantee the reproducibility of test data
[0005] The traditional concentration is all online concentration, not offline concentration; and the pure water is also concentrated when the sample is concentrated, resulting in high test results
It is also difficult to guarantee the reproducibility of test data
[0006] The traditional matrix elimination is all realized online, and the matrix cannot be eliminated offline, which limits the test range

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Comprehensive pretreatment instrument for chemical analysis of samples
  • Comprehensive pretreatment instrument for chemical analysis of samples
  • Comprehensive pretreatment instrument for chemical analysis of samples

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Working mode 1, enrichment or matrix elimination analysis, such as figure 2 Shown:

[0053] The syringe pump II 4 carries the sample through the electric two-position six-way sample dilution valve 8 and enters the electric two-position six-way large-volume sample collection valve 10 for sample collection. Temporarily stay in the quantitative loop of the electric two-position six-way large-volume sample collection valve 10, and the excess samples are discharged into the waste liquid bucket I21 for collection;

[0054]Then the syringe pump I3 injects pure water into the electric two-position six-way large-volume sample collection valve 10 through the capture column 6, the three-way mixer 9, and the electric two-position six-way sample dilution valve 8 in sequence. The volumetric sample collection valve 10 is connected by the dotted line, and under the push of pure water, the sample in the quantitative loop is sent to the electric two-position six-way sample neutralizati...

Embodiment 2

[0057] Working mode 2, dilution analysis, such as image 3 Shown:

[0058] The sample carried by syringe pump II4 is filtered by the sample filter 7, and enters the three-way mixer 9 through the electric two-position six-way sample dilution valve 8. At the same time, the syringe pump I3 sends pure water into the three-way mixer 9. The pure water and sample in 9 have completed the sample dilution, and the diluted sample passes through the electric two-position six-way sample dilution valve 8, the electric two-position six-way large-volume sample collection valve 10, the electric two-position six-way sample neutralization valve 11, The electric two-position six-way sample concentration valve 13 enters the sample collection bottle / other instrument III 20 for sample collection / analysis.

[0059] The above-mentioned syringe pump I3, syringe pump II4, two-position six-way sample dilution valve 8, electric two-position six-way large-volume sample collection valve 10, electric two-po...

Embodiment 3

[0061] Working mode 3, neutralization analysis, such as Figure 4 Shown:

[0062] After the sample carried by the syringe pump II4 is filtered through the sample filter 7 in sequence, it enters neutralization through the electric two-position six-way sample dilution valve 8, the electric two-position six-way large-volume sample collection valve 10, and the electric two-position six-way sample neutralization valve 11. 12 for sample neutralization, and the neutralized sample passes through the electric two-position six-way sample neutralization valve 11 and the electric two-position six-way sample concentration valve 13, and enters the sample collection bottle / other instrument III 20 for sample analysis.

[0063] At the same time, the peristaltic pump 5 continuously injects the ultrapure water in the ultrapure water storage bottle 1 into the neutralizer 12 for regeneration of the neutralizer, and the waste liquid of the regeneration liquid flows out from the waste liquid pipe an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a comprehensive pretreatment instrument for chemical analysis of samples. The comprehensive pretreatment instrument comprises a liquid storage part, a dilution part, a sample collection part, a neutralization part, a concentration part and a control part. The comprehensive pretreatment instrument provided by the invention can select the on-line / off-line neutralization, dilution, concentration and matrix elimination functions for the samples by controlling the switching of circuits and valves; all the functions can be used independently on line or off line, can also be combined randomly according to requirements, can convert complex samples into aqueous solution, reduce or remove interfering substances, reduce the concentration of organism, adjust the pH value, concentrate and enrich components to be measured to meet the requirements on instrument analysis, reduce the influence of complex samples on analysis results, expand the selection of analysis method, increase a response value of instrument detection, and ensure the reproducibility and accuracy of instrument test. The comprehensive pretreatment instrument provided by the invention is suitable for scientific research, medicine and hygiene, environmental protection, industrial and agricultural production, recycling of industrial wastewater and waste materials and other industries, especially the alumina industry, and is high in practicability.

Description

technical field [0001] The invention relates to the technical field of analytical chemistry, in particular to a comprehensive pretreatment instrument for chemical analysis samples. Background technique [0002] The detection of complex samples requires sample pretreatment. The purpose of chemical analysis pretreatment is mainly to convert complex samples into a mixture of aqueous solution and polar organic solvent; reduce or remove interfering substances, reduce the concentration of the body; adjust pH; concentrate and enrich The components to be measured meet the requirements of instrumental analysis. [0003] The traditional sample pH adjustment is mainly realized by the principle of acid-base neutralization, that is, ion exchange makes the pH value reach neutral. When dealing with acid-base samples, the corresponding neutralizer is added to make the sample neutral through chemical reaction. However, adding acid-base reagents for neutralization can easily cause ion poll...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/38G01N1/40
CPCG01N1/28G01N1/38G01N1/40
Inventor 王晓香康世昌效存德张耀南赵爱国
Owner COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com