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

Rapid multi-mode element speciation analysis pretreatment system

An element form, multi-mode technology, applied in the field of instrument analysis, can solve problems such as time-consuming, pipeline joint damage, and other problems, achieving the effect of simple structure and operation, easy structure and strong versatility

Active Publication Date: 2015-06-03
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the low hydride generation efficiency of high-valent elements, such as arsenate, selenate, antimonate, etc., in order to improve the analytical sensitivity, a pre-reduction operation is required
[0003] The above pretreatment process involves oxidizing agent, pre-reducing agent, KBH 4 The introduction of reducing agent, HCl carrying current, etc., so the connection of the pipeline of the speciation analysis pretreatment system is complicated. When analyzing the speciation of different elements, it is necessary to reinstall the chromatographic column and readjust or switch the pipeline. This process involves related professional knowledge and consume a lot of time, and frequent pipeline adjustments will cause damage to pipeline joints, etc.

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
  • Rapid multi-mode element speciation analysis pretreatment system
  • Rapid multi-mode element speciation analysis pretreatment system
  • Rapid multi-mode element speciation analysis pretreatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A fast multi-mode element speciation analysis pretreatment system, comprising a chromatographic column selection module 1, a digestion selection module 2, a pre-reduction selection module 3, and a hydride generation module 4 connected in sequence. The chromatographic column selection module consists of a six-way valve 8. Anion exchange chromatographic column 6 and reverse chromatographic column 7. Ports a and b of the six-port valve 8 are respectively connected to the two ends of the anion exchange chromatography column, and ports e and d of the six-port valve 8 are respectively connected to the reverse chromatographic column At both ends, the f port of the six-way valve 8 is connected to the inlet 5 of the sample to be analyzed, and the c port of the six-way valve 8 is connected to the digestion selection module. The digestion selection module includes a six-way valve 17, a digestion extension coil 16 and an oxidant storage tank 9. Ports a and b of the six-way valve 17 a...

Embodiment 2

[0050] The difference from Embodiment 1 is that the six-way valve 17 and the six-way valve 21 are changed to the eight-way valve 26 and the eight-way valve 27, respectively, the connecting pipe 18 and the connecting pipe 22 are removed, and the drain outlet is changed, such as image 3 Shown. In the actual pretreatment process, there is no need to perform any operation on the peristaltic pump, and the multi-port valve of each module is controlled by software to realize fully automated sample pretreatment.

Embodiment 3

[0052] The difference from Embodiment 1 is that this system is only composed of three parts: the chromatographic column selection module 1, the digestion selection module 2, and the hydride generation module 4 connected in sequence, and the pre-reduction selection module 3 and the pre-reducing agent storage connected to it are removed. Can 10, such as Figure 4 Shown.

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 relates to a rapid multi-mode element speciation analysis pretreatment system. The system consists of four parts, namely a chromatographic column selection module, a digestion selection module, a pre-reduction selection module and a hydride generation module. By simply controlling multi-way valves in the chromatographic column selection module, the digestion selection module and the pre-reduction selection module, the switching of different chromatographic separation modes can be achieved, the switching between online digestion and non-digestion modes as well as between pre-reduction and non-reduction modes can also be achieved, and the rapid pretreatment operations of speciation analysis on elements with different characteristics can be met. The rapid multi-mode element speciation analysis pretreatment system disclosed by the invention is strong in universality, low in cost and simple in device structure, is simple to operate, and can be widely applied to element speciation analysis instruments related to liquid phase chromatographic separation, online sample digestion, online pre-reduction and hydride generation.

Description

Technical field [0001] The invention belongs to the field of instrument analysis and relates to element morphology analysis, in particular to a fast multi-mode element morphology analysis pretreatment system. Background technique [0002] Liquid chromatography-hydride generation-atomic spectroscopy or mass spectrometry is widely used in the analysis of arsenic, selenium, mercury, antimony, tellurium and other elements in biological and environmental samples. Because different elements or their forms have different physical and chemical properties, different pretreatment operations are often required when performing morphological analysis. For example: For the chromatographic separation mode, the anion exchange mode is often used for arsenic speciation analysis, and the reversed-phase chromatography mode is often used for mercury speciation analysis; for hydride generation, arsenate and sub- When analyzing the speciation of arsenate, monomethyl arsenic, dimethyl arsenic, inorgani...

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): G01N30/06
Inventor 余晓平邓天龙郭亚飞南雪娇郭金玲
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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