Nitrite electrochemical sensor and manufacturing method thereof

A nitrite and electrochemistry technology, applied in the field of electrochemistry, can solve the problems of complicated operation of nitrite detection technology, poisoning of electrode surface, complicated use of instruments, etc., and achieve excellent electron transfer rate, low cost, and large specific surface area. Effect
CN104634848AInactive Publication Date: 2015-05-20ZHEJIANG UNIV
5 Cites 16 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2015-05-20
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a nitrite electrochemical sensor and a manufacturing method thereof. The nitrite electrochemical sensor is used for detecting the concentration of nitrite in a to-be-detected solution and comprises a substrate, wherein an auxiliary electrode, a working electrode, a reference electrode and leads and binding posts of the various electrodes are printed on the substrate by virtue of a silk-screen printing technology; the auxiliary electrode and the working electrode are subjected to carbon paste printing, while the reference electrode, the leads and the binding posts are subjected to silver / silver chloride paste printing; reduced graphene oxide is also deposited on the surface of the working electrode by virtue of an electrochemical graphene oxide reduction method, and a layer of Nafion is dispensed on the upper surface of the reduced graphene oxide. The sensor disclosed by the invention has the advantages of high sensitivity, short response time, good repeatability, low cost, disposability and the like, and has a good application potential in the aspect of on-site rapid detection of the content of nitrite in a to-be-detected sample.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of electrochemical technology, in particular to a nitrite electrochemical sensor and a preparation method thereof. Background technique

[0002] As an environmental pollutant, nitrite widely exists in nature, especially in surface water and groundwater, as well as in animals, plants and food. When the nitrite content accumulates to a certain concentration, it will have harmful effects on humans and animals. For example, nitrite can oxidize hemoglobin in the human body to methemoglobin, and methemoglobin cannot transport oxygen to the whole body; another example is nitrous acid in aquaculture water. When the salt concentration exceeds 0.1mg / L, it will cause the aquatic animals to reduce their food intake and autoimmunity, and then they will be easily infected with pathogens and outbreaks of diseases.

[0003] Therefore, the rapid detection of nitrite is particularly important. Traditional nitrite determination methods...

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