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

Water quality detection method

A technology of water quality detection and cofe2o4, which is applied in the direction of general water supply saving, measuring devices, instruments, etc., can solve the problems of high price, complicated and bulky instruments, etc., and achieve the effect of simple preparation conditions, optimized sensing performance, and improved sensing performance

Active Publication Date: 2022-07-08
HEFEI HAIZHENG ENVIRONMENTAL MONITORING
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the above-mentioned detection methods are complex and heavy, and the price is high; electrochemical detection is currently widely used in water quality detection due to its advantages of sensitivity, high efficiency, simple operation, and low cost, and the core of electrochemical detection lies in electrical sensing materials.

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
  • Water quality detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) ZnMn 2 O 4 / CoFe 2 O 4 Preparation of modified electrodes:

[0015] Zinc nitrate, manganese nitrate, and urea with a molar ratio of 10 mmol: 20 mmol: 40 mmol were dissolved in a mixed solvent of water / isopropanol with a volume ratio of 10 ml: 20 ml, followed by adding 28 mg of PEG-4000, and ultrasonically mixed uniformly. The reaction was carried out in a water bath at 80 degrees Celsius for 4 hours. After the reaction was completed, vacuum filtration and washing were performed; the product was calcined at a high temperature of 350 degrees Celsius for 1 hour to obtain rod-shaped ZnMn. 2 O 4 ;

[0016] The rod-shaped ZnMn 2 O 4 Continue to add the mixed solvent of water / isopropanol with a volume ratio of 10ml:20ml, then add cobalt nitrate, ferric nitrate and triethanolamine with a molar ratio of 2mmol:4mmol:8mmol successively, and continue to react in a water bath for 5h under the condition of 80 degrees Celsius. After the end, vacuum filtration and washing; ...

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 water quality detection method which is characterized by comprising the following steps: (1) preparation of a ZnMn2O4 / CoFe2O4 modified electrode: dissolving zinc nitrate, manganous nitrate and urea in a mixed solvent of water / isopropanol, then adding PEG-4000, carrying out uniform ultrasonic mixing and water bath reaction, and after the reaction is finished, carrying out vacuum filtration and washing; performing high-temperature calcination to obtain rod-like ZnMn2O4; continuously adding the rod-like ZnMn2O4 into a mixed solvent of water / isopropanol, then sequentially adding cobalt nitrate, ferric nitrate and triethanolamine, carrying out water bath reaction, and after the reaction is finished, carrying out vacuum filtration and washing; performing high-temperature calcination to obtain rod-like ZnMn2O4 / CoFe2O4 with a core-shell structure; dissolving ZnMn2O4 / CoFe2O4 in ethanol to form a suspension, then dispensing the suspension on the polished glassy carbon electrode, and drying the glassy carbon electrode; and (2) forming an electrochemical sensor by using the modified electrode in the step (1) as a working electrode, a platinum sheet as a counter electrode and a saturated calomel electrode as a reference electrode, immersing the electrochemical sensor into a solution containing heavy metal ions, and testing the concentration of the heavy metal ions by square wave stripping voltammetry, the composite material has good catalytic ability and sensitivity to heavy metal ions in polluted water, and can efficiently detect lead ions and copper ions.

Description

technical field [0001] The invention belongs to the field of water quality detection, and relates to a water quality heavy metal detection method. Background technique [0002] With the rapid development of industry, environmental water pollution has become a serious environmental pollution problem all over the world. Heavy metal pollution in water enters the human body through the food chain, cannot be metabolized in the human body and is constantly enriched, which brings a huge threat to human health and has mutagenic, carcinogenic and teratogenic effects. Therefore, it is of great significance to obtain a green, environmentally friendly and low-cost method for detecting heavy metals in water quality. At present, the detection of heavy metals in water mainly includes atomic absorption spectroscopy (AAS), inductively coupled plasma mass spectrometry (ICP-MS), X-ray fluorescence spectroscopy (XRF), instrumental neutron activation analysis (INAA), Raman spectroscopy (SERS) a...

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): G01N27/327G01N27/48
CPCG01N27/3275G01N27/48Y02A20/20
Inventor 张庆昌
Owner HEFEI HAIZHENG ENVIRONMENTAL MONITORING
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