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

Sensor capable of rapidly detecting antibiotics in water environment and detection method

A detection method and technology for detecting water, which can be applied to instruments, measuring devices, scientific instruments, etc., can solve the problems of long time-consuming modification process, complex modification materials and modification methods, etc.

Inactive Publication Date: 2020-10-16
CHINA UNIV OF GEOSCIENCES (BEIJING)
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above sensors have successfully detected CFX in the water environment, they still require complex modification materials and modification methods, and the modification process is time-consuming.

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
  • Sensor capable of rapidly detecting antibiotics in water environment and detection method
  • Sensor capable of rapidly detecting antibiotics in water environment and detection method
  • Sensor capable of rapidly detecting antibiotics in water environment and detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Dress up the glassy carbon electrode using a plasma cleaner by:

[0030] Step 1: Grinding and polishing, place the bare glassy carbon electrode on 2 o 3Grinding and polishing on the polishing cloth of polishing powder paste, in which Al 2 o 3 Polishing powder paste is a polishing agent;

[0031] Step 2, cleaning and drying, followed by ultrasonic cleaning in double distilled water, absolute ethanol and double distilled water for 5 minutes, then take out the electrode, and blow dry the electrode in a nitrogen-protected atmosphere for later use;

[0032] Step 3, nitrogen plasma modification, place the dried glassy carbon electrode on the plasma cleaning machine table, the area marked with electrode modification on the table, to ensure that each electrode modification is in the same position, the plasma modification power is 100W~180W, the modification time is 0.5min~10min, and the electrode (NP-GCE) modified by plasma is sealed and stored for subsequent detection.

...

Embodiment 2

[0044] This embodiment is mainly used to study the influence of two parameters of nitrogen plasma modification power and time on the structure of the modified glassy carbon electrode. The relationship between CFX current and power parameters and time is as follows Figure 4 (A) and (B) shown.

[0045] pass Figure 4 (A) and (B), it can be found that the size of the modification power has a great influence on the structure change of the glassy carbon electrode. When the plasma power increases from 100W to 140W, the oxidation peak current value of CFX also gradually increases, and 140W rises to When the plasma power is 180W, the oxidation peak current value of CFX drops significantly, and when the plasma power is 140W, the oxidation peak current value is the highest. This is because when the modification power increases from 100W to 140W, the intensity of the plasma acting on the surface of the GCE increases, which promotes the increase in the number of active functional group...

Embodiment 3

[0047] The present embodiment provides a kind of sensor that can rapidly detect antibiotics in the water environment that the above-mentioned technical scheme makes, it is used to detect the detection method of ciprofloxacin in the water environment, utilizes 0.2M Na 2 HPO 4 and 0.2M NaH 2 PO 4 The solution is mixed according to different volume ratios to prepare a PBS buffer solution with a pH range of 4.5 to 8.0. After the water environment to be tested is sampled, the PBS buffer solution is used to adjust the pH of the sample to be tested.

[0048] The effect of different pH on the peak current of CFX oxidation is as follows: Figure 4 As shown in (C) and (D), (C) in the figure is the differential pulse voltammogram of CFX on the NP-GCE electrode at different pH (pH values ​​are: 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8); (D) is the effect of pH on the peak current and peak potential of CFX. At a CFX concentration of 1 x 10 -4 mol L -1 In different pH solutions, as the pH increas...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
surface roughnessaaaaaaaaaa
surface roughnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of water quality detection, in particular to a sensor capable of quickly detecting antibiotics in a water environment. The sensor prepared by the followingsteps: 1, grinding and polishing; 2, cleaning and blow-drying; and 3, nitrogen plasma modification. In the preparation process of the sensor, an electrode is modified by adopting nitrogen plasma, andthe hydrophilicity is improved, the resistance is reduced and the electron transfer capability is improved by increasing the types and the quantity of active functional groups on the surface of the electrode, so that the interfacial electroactivity of the electrode is improved, and high-sensitivity and high-selectivity detection and analysis on ciprofloxacin (CFX) can be realized. The invention also provides a detection method using the sensor. According to the method, CFX can be accurately detected in a water environment containing a plurality of antibiotic components and inorganic ion components; the anti-interference performance is high, the linear response ranges are 2.5 * 10 <-7 >-1 * 10 <-5 > mol.L <-1 > and 1 * 10 <-5 >-1 * 10 <-4 > mol.L <-1 >, the detection limit is 8 * 10 <-9 >mol.L <-1 >, and high stability and reproducibility are achieved.

Description

technical field [0001] The invention relates to the technical field of water quality detection, in particular to a sensor capable of rapidly detecting antibiotics in a water environment and a detection method using the sensor. Background technique [0002] Ciprofloxacin (CFX) is a synthetic third-generation fluoroquinolone antibiotic, because of its broad-spectrum antibacterial activity, good bioavailability, few side effects, good tissue penetration and biological Characterized by distribution in body fluids, it is one of the most widely used fluoroquinolone antibiotics. Ciprofloxacin enters the water environment through domestic sewage, pharmaceutical factory production discharge, solid waste disposal, livestock manure, garbage dump leaching, etc., and has been frequently detected in various water environments. [0003] With the aggravation of the pollution of ciprofloxacin in the water environment, the detection method of ciprofloxacin has received more and more attentio...

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): G01N27/30G01N27/48G01N27/38
CPCG01N27/308G01N27/48G01N27/38
Inventor 薛强陈涛刘怡然
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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