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

Method for detecting total phosphorus in water sample based on composite ratio fluorescent probe

A ratiometric fluorescent probe and detection method technology, applied in the field of detection of total phosphorus in water samples, can solve problems such as insufficient sensitivity, spectrophotometric interference, and insufficient sensitivity

Active Publication Date: 2019-08-16
ZHEJIANG UNIV
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sensitivity of the current method for the determination of total phosphorus in water samples is generally not high enough, which can barely meet the needs of the determination of total phosphorus in water bodies. There is a problem of insufficient sensitivity for the detection of clean and unpolluted surface water, and there is also the problem of coexisting matrix interference in spectrophotometry. , the development of analytical methods with high sensitivity and good selectivity has important application requirements

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
  • Method for detecting total phosphorus in water sample based on composite ratio fluorescent probe
  • Method for detecting total phosphorus in water sample based on composite ratio fluorescent probe
  • Method for detecting total phosphorus in water sample based on composite ratio fluorescent probe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A simple, sensitive and selective analysis method for total phosphorus in water samples was established based on the complex ratio fluorescent probe of rare earth ion polymer and carbon quantum dots, including the following steps:

[0029] (1) Synthesis of EuCPs: pyromellitic acid (H 4 btec, 0.5mmol, 127.1mg) was dissolved in 80mL ultrapure water, then imidazole-2-carboxaldehyde (ICA, 1.0mmol, 96.1mg) was added, and after ultrasonication for 15min, the pH was adjusted to 2.0mol / L sodium hydroxide solution to 8.0, bright yellow H was obtained after stirring at room temperature for 6 h 4 btec-ICA solution, and finally the prepared EuCl 3 ·6H 2 O solution (10mL, 50mmol / L) was slowly added dropwise to H 4 In the btec-ICA solution, the EuCPs product was obtained after stirring at room temperature for 2 h. The reaction product was washed with high-purity water and centrifuged (12000 rpm, 10 min), and then vacuum-dried at 50° C. for 24 h to obtain EuCPs light yellow powder...

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 method for detecting total phosphorus in a water sample based on a composite ratiometric fluorescent probe, and belongs to the technical field of environmental monitoring. According to the invention, a N,S-CQDs / EuCPs composite ratiometric fluorescent probe system is constructed based on a rare earth ionic polymer and carbon quantum dots. Except for slight influence of Fe3 +, other metal cations or inorganic anions have no obviously influence on a fluorescence intensity ratio of the probe, which indicates that the fluorescent probe system can realize a selective detection of phosphate radicals. The method is adopted to measure phosphate radical concentration in tap water, lake water, river water and human urine, and the measured phosphate radical concentration hasgood consistency with the result measured by a phosphomolybdic blue spectrophotometry method.

Description

technical field [0001] The invention relates to a method for detecting total phosphorus in water samples, in particular to a method for detecting total phosphorus in water samples based on a complex ratio fluorescent probe constructed by rare earth ion polymers and carbon quantum dots, and belongs to the technical field of environmental monitoring. Background technique [0002] Phosphorus in water can exist in the form of elemental phosphorus, metaphosphate, orthophosphate, pyrophosphate and organic phosphorus. Its main sources are domestic sewage, chemical fertilizers, organophosphorus pesticides, and phosphate builders used in modern detergents. Phosphorus in water is a key element needed for the growth of algae. Excessive phosphorus is the main cause of polluted water, eutrophication of lakes and red tides in bays. Total phosphorus is the result of converting various forms of phosphorus into orthophosphate after the water sample is digested, and it is measured in milligr...

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): G01N21/64
CPCG01N21/64
Inventor 童裳伦武会芳
Owner ZHEJIANG UNIV
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