Supercharge Your Innovation With Domain-Expert AI Agents!

Method for enriching low concentration copper in water through carrageenan chelating technology

A carrageenan and low-concentration technology, applied in the preparation of test samples, measuring devices, instruments, etc., can solve the problems of copper ion detection error and poor repeatability of results, and achieve simple operation process and high detection accuracy Effect

Inactive Publication Date: 2017-03-22
DALIAN UNIV OF TECH QINGDAO NEW ENERGY MATERIALS TECH RES INST CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When measuring the copper content by the sodium diethylaminodithioformate method, it is necessary to use the cresyl red indicator to determine the titration end point by looking at the change of the titration color, which undoubtedly causes a great error in the detection of copper ions. The results are not reproducible

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 enriching low concentration copper in water through carrageenan chelating technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Below in conjunction with example the present invention will be further described.

[0019] Carrageenan chelation method is the method for enriching low-concentration copper in water, and the steps are as follows:

[0020] (1) Accurately weigh three parts of carrageenan powder, 0.5-1.0g, into 200mL beakers labeled 1, 2, and 3 for later use, and set up blank comparison beakers No. 4, 5, and 6; dissolve the above-mentioned carrageenan powder in 30-70mL Heat and stir in deionized water, and set the constant temperature to 60-85° C. until the carrageenan powder is completely dissolved to obtain a clear and transparent carrageenan solution.

[0021] (2) Prepare copper ion standard solutions, and prepare several low-concentration copper ion standard solutions of 10mg / L~0.05mg / L respectively. The concentration of copper ions was detected by atomic absorption spectrophotometry and a standard curve was drawn.

[0022] (3) Measure 50 mL of copper ion standard solution with a co...

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
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for enriching low concentration copper in water through a carrageenan chelating technology. The method comprises the following steps: dissolving carrageenan powder, mixing obtained carrageenan solution with a standard copper ion solution, chelating carrageenan and copper ions to obtain a chelate, dialyzing the chelate, adding hydrochloric acid to break the chelate structure, detecting obtained copper ion enriched liquid by using an atomic spectrophotometer, and calculating according to a standard curve of the standard copper ion solution in order to obtain the copper content. The method improves the detection precision of copper in a water sample with low concentration of copper ions, is simple, and is easy to implement.

Description

technical field [0001] The invention relates to a metal ion detection method, in particular to a carrageenan chelation method for enriching low-concentration copper in water. Background technique [0002] When measuring the copper content by the sodium diethylaminodithioformate method, it is necessary to use the cresyl red indicator to determine the titration end point by looking at the change of the titration color, which undoubtedly causes a great error in the detection of copper ions. The results are not reproducible. Using the characteristics of chelated metal ions of carrageenan itself to enrich the low-concentration copper ion solution for atomic absorption spectrophotometric detection can avoid errors caused by visual color changes and improve detection accuracy. Contents of the invention [0003] The present invention aims to solve the above problems, and provides a method for enriching low-concentration copper in water by carrageenan chelation method, utilizing c...

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): G01N1/34G01N21/31
CPCG01N1/34G01N21/3103
Inventor 池明刘鑫业李鹏廷
Owner DALIAN UNIV OF TECH QINGDAO NEW ENERGY MATERIALS TECH RES INST CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com