High-precision portable front-end device for electrochemical detection

A high-precision, portable technology, applied in the field of electrochemical detection, can solve the problems of weak anti-interference of electrochemical detectors, difficult to meet the needs of using devices, complicated secondary construction of devices, etc., and achieves strong stability and anti-interference. , the effect of improving conversion accuracy and low power consumption

Pending Publication Date: 2020-09-22
HANGZHOU DIANZI UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conductivity detector is mainly used for ion detection, and its working principle is: a constant potential is applied between the two electrodes. When the electroactive component passes through the electrode surface, a redox reaction (electrode reaction) occurs, and the magnitude of the electric quantity (Q) conforms to Faraday's law, the existing electrochemical detectors have weak anti-interference, poor stability, low detection accuracy

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
  • High-precision portable front-end device for electrochemical detection
  • High-precision portable front-end device for electrochemical detection

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] The present invention will be further described below with reference to the drawings and examples. The implementation of the present invention includes but is not limited to the following examples.

[0025] Such as figure 1 As shown, the high-precision portable front-end device for electrochemical detection is suitable for portable electrochemical measuring equipment powered by a single power supply. The current inspection accuracy can reach 10nA~10uA, which is comparable to general laboratory electrochemical workstations. Its circuit includes forward voltage. The follower circuit, the RE electrode and CE electrode based on the forward voltage follower circuit, the current-voltage conversion circuit, the WE electrode based on the current-voltage conversion circuit, and the three-ring top-crossing negative feedback amplifier connected to the output terminal of the current-voltage conversion circuit. The circuit is greatly simplified, and at the same time, the design of the t...

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 high-precision portable front-end device for electrochemical detection. The device comprises a forward voltage follower circuit, an RE-CE electrode based on the forward voltage follower circuit, a current-voltage conversion circuit, a WE electrode based on the current-voltage conversion circuit and a three-ring opposite vertex cross negative feedback amplifier. Accordingto the three-ring opposite vertex cross negative feedback amplifier, an output node of a negative feedback circuit formed by A1 is connected with an output node of a negative feedback circuit formed by A2, and the two nodes are combined to form an opposite vertex ring; an output node of the negative feedback circuit formed by A2 is connected with an in-phase input node of the negative feedback circuit formed by A3, an anti-phase input node of the negative feedback circuit formed by A3 is connected with an anti-phase input node of the negative feedback circuit formed by A2, and the two nodes are combined to form a cross ring. By means of the arrangement, compared with a traditional amplifying circuit, the noise level is lower, the signal bandwidth is larger, and the testing precision of a traditional electrochemical detector is improved.

Description

technical field [0001] The invention belongs to the field of electrochemical detection, and in particular relates to a high-precision portable front-end device for electrochemical detection. Background technique [0002] Electrochemical detectors measure the electrical signal changes of substances. For compounds with redox properties, such as organic compounds containing nitro and amino groups, and inorganic anions and cations, electrochemical detectors can be used, including polarographic, coulombic, and amperometric and conductivity detectors, etc. The first three are collectively called voltammetry detectors, which are used for the detection of compounds with redox properties. The conductivity detector is mainly used for ion detection, and its working principle is: a constant potential is applied between the two electrodes. When the electroactive component passes through the electrode surface, a redox reaction (electrode reaction) occurs, and the magnitude of the electri...

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
IPC IPC(8): G01N27/26
CPCG01N27/26
Inventor 周含旭欧阳一凡桂培培李炜易鲍靖尔朱镕亿郭家瑞陆潇晓陈阿青
Owner HANGZHOU DIANZI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap