A fluorescent hydrogel and its application in the detection of carbaryl

A hydrogel and carbaryl technology, applied in the field of biosensors, can solve problems such as interference, achieve high stability and selectivity, and avoid background fluorescence interference.
CN113563886BActive Publication Date: 2022-04-01JILIN UNIV
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2022-04-01

Smart Images

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

Abstract

A NaErF-based 4 :0.5%Tm 3+ @NaYF 4 The fluorescent hydrogel of / PDA and its application in the detection of carbaryl belong to the technical field of biosensors. Based on prepared NaErF 4 :0.5%Tm 3+ @NaYF 4 / Polydopamine (PDA) fluorescent hydrogel, in which PDA can act as NaErF 4 :0.5%Tm 3+ @NaYF 4 effective quencher. After the introduction of acetylcholinesterase, its catalytic product has strong antioxidant properties and prevents the polymerization of dopamine, thereby restoring the fluorescence signal. The quantitative detection of pesticides in tea was achieved by introducing carbaryl to modulate the fluorescence response signal. Based on this principle, the portable detection of carbaryl in actual samples was further combined with fluorescence image analysis. The invention has the advantages of low background interference, low cost, portability and the like, and provides a new perspective for portable monitoring of food, environment and public safety based on near-infrared nanoprobes.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of biosensors, specifically a NaErF-based 4 :0.5%Tm 3+ @NaYF 4 / PDA fluorescent hydrogel and its application in carbaryl detection. Background technique

[0002] Carbamate pesticides can effectively prevent and control pests and diseases, and play an important role in improving the output of agriculture, forestry and animal husbandry. Although carbamate pesticides have the characteristics of low toxicity and short half-life, irrational use and long-term bioaccumulation will cause serious environmental and life safety hazards. Its toxicity mechanism is similar to that of organophosphorus pesticides, that is, it can effectively inhibit the activity of cholinesterase and affect biological nerve conduction. Exposure to carbamate pesticides can cause cerebral edema, coma, and respiratory depression. Because it can be converted into nitrosobenzene compounds under acidic conditions, the International Agency fo...

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