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

Two-channel copper ion detection test paper and production method thereof

A copper ion detection and dual-channel technology, applied in the field of chemical analysis, can solve the problems of complex preparation of color selection agent and large color selection agent, and achieve the effect of low cost, fast analysis speed and simple preparation

Active Publication Date: 2018-03-23
WUHAN INSTITUTE OF TECHNOLOGY
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Application Nos. 200810106412.8, 200910094252.4, 201610520369.4 and other Chinese patents disclose some copper ion detection test papers and their preparation methods. Some test papers use a large amount of color selection agent, and some test papers require multiple color selection agents to be used in combination. The preparation is complicated. In general, these patents are based on colorimetric methods to determine copper ions, and there is still much room for improvement in sensitivity and 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
  • Two-channel copper ion detection test paper and production method thereof
  • Two-channel copper ion detection test paper and production method thereof
  • Two-channel copper ion detection test paper and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1, the preparation of compound formula I

[0037] The compound BPA (0.1g, 0.248mmol), TCF (0.064g, 0.321mmol) and ammonium acetate (1mg, 0.013mmol) (three ratios 1:1.3:0.05) were added to ethanol (1 mL) and dichloromethane ( 0.8mL) in a mixed solvent (ratio 1:0.8), react at 25°C for 8 hours. After the reaction, dichloromethane and water were added for extraction and separation, the collected organic phase was dried with anhydrous sodium sulfate, and the solvent was spin-dried, and separated and purified by silica gel column chromatography, and the eluting agent was dichloromethane. 98 mg of the compound of formula I was obtained, and the yield was 81%.

[0038] The proton nuclear magnetic spectrum, carbon nuclear magnetic spectrum and mass spectrometry detection data of product formula I compound are as follows: 1 H NMR (400MHz, CDCl 3 )δ[ppm]: 8.62(d, J=4Hz, 2H), 7.67(t, J=8Hz, 2H), 7.58(d, J=16Hz, 1H), 7.49(d, J=12Hz, 2H), 7.27-7.20(m, 4H), 6.82(d, J=12...

Embodiment 2

[0039] Embodiment 2, the aqueous solution of compound formula I is to the dual-channel detection of copper ion

[0040] The compound formula I was dissolved in water, and a solution with a concentration of 10 μmol / L was prepared. Take a series of each 3mL of this solution, then add 2 times the equivalent of different kinds of metal ions respectively, and test the UV-Vis absorption spectrum of each test solution (as attached figure 1(a)) and fluorescence spectra (as attached figure 2 (a) shown). And directly take pictures of each solution (as attached figure 1 Shown in (b)) to see the color change; then in a dark place, under the illumination of a portable ultraviolet lamp, take a picture of the fluorescence change of the solution (as attached figure 2 (b) shown).

[0041] From figure 1 (b) It can be seen that only copper ions can make the color of the formula I solution turn yellow from lavender, and the addition of other metal ions has no effect on the color of the so...

Embodiment 3

[0042] Embodiment 3, the preparation of dual-channel copper ion detection test paper

[0043] Dissolve formula I in acetone, prepare 1mmol / L chromogenic solution; cut qualitative filter paper into strips of 1cm×4cm; then immerse the paper strip in chromogenic solution for 1 minute, take it out and put it on a watch glass After drying, the dual-channel copper ion detection test paper is obtained.

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 two-channel copper ion detection test paper and a production method thereof. The two-channel copper ion detection test paper comprises a color developing plate and a color developing substance on the color developing plate, and the color developing substance is a compound of formula I shown in the description. The copper ion detection test paper is simple to produce, thecolor developing substance simultaneously changes color and fluorescence obviously after meeting copper ions, and the signal changes of color matching and the fluorescence can be simultaneously observed with naked eyes and a portable ultraviolet lamp, so the selectivity and the sensitivity are higher than those of single colorimetry or single fluorescence methods. The two-channel copper ion detection test paper is especially suitable for onsite water quality analysis, and has the advantages of low cost, fast analysis speed, and accuracy in analysis.

Description

technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a double-channel test paper for detecting the concentration of divalent copper ions in water and a preparation method thereof. Background technique [0002] Copper plays a very important physiological role in many biological systems, and it is the third most transition metal element in the human body after iron and zinc. However, excessive intake of copper can lead to a series of lesions in organs, such as liver and kidney damage, neurodegenerative diseases, etc. In view of this, the U.S. Environmental Protection Agency stipulates that the maximum concentration of copper ions in drinking water should not exceed 20 μM. Therefore, it is very important to develop a suitable method to identify and detect the concentration of copper ions in water. At present, the common methods for detecting the concentration of copper ions in water include fluorescence method, electrochem...

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): G01N21/78G01N21/64
CPCG01N21/643G01N21/78G01N2021/6432
Inventor 陈杜刚余响林黎俊波刘佳俊王哲
Owner WUHAN INSTITUTE OF TECHNOLOGY
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