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

Method for measuring concentration of lead ions in PM2.5

A lead ion, concentration technology, applied in the field of electrochemical determination, can solve the problems of time-consuming, complex chemical reaction, bulky, etc., to achieve the effect of improving selectivity and sensitivity, improving instability, and facilitating storage

Active Publication Date: 2015-01-14
YANGZHOU UNIV
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, the commonly used Pb 2+ The detection methods include flame atomic absorption spectrometry, spectrophotometry, complexometric titration, fluorescence spectroscopy, etc. Although trace heavy metal ions can be detected well, these methods are usually time-consuming and accompanied by complicated chemical reactions, or Requires large quantities of reagents, analytes, and bulky and complex instrumentation

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 measuring concentration of lead ions in PM2.5
  • Method for measuring concentration of lead ions in PM2.5
  • Method for measuring concentration of lead ions in PM2.5

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention measures the method for lead ion concentration in PM2.5, comprises the following steps successively:

[0018] ⑴Use Al on the polishing cloth 2 o 3 After polishing the glassy carbon electrode with powder, immerse it in a beaker filled with acetone and use an ultrasonic cleaner to ultrasonically clean it for 20 minutes. The diameter of the electrode jacket of the glassy carbon electrode is 6mm, the length of the electrode is 60mm, and the length of the copper terminal of the glassy carbon electrode is 20mm. ; Then place the glassy carbon electrode in ultrapure water and ultrasonically clean it for 5 minutes for primary cleaning, then ultrasonically clean it in 0.1mol / L dilute hydrochloric acid for 20 minutes, and then ultrasonically clean it in absolute ethanol for 5 minutes for secondary cleaning.

[0019] ⑵ Dry the above glassy carbon electrode with a hair dryer, and place it in a desiccator after the ethanol and acetone are completely volatilized...

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
Lengthaaaaaaaaaa
Lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for measuring the concentration of lead ions in PM2.5. The method comprises the following steps: dripping a modification liquid to the surface of a glassy carbon electrode, baking, inserting the glassy carbon electrode serving as a working electrode, an auxiliary electrode and a reference electrode into a mixed solution of glycine and sodium nitrate, and repeatedly scanning, so that the surface of the glassy carbon electrode is coated with a polyglycine-multiwalled carbon nanotube / naphthol / epoxy phosphate film; inserting a modified electrode serving as a working electrode into a base solution containing lead ions, giving a voltage-current curve summary chart by virtue of an electrochemical workstation, and reading the current peak of the concentration of each lead ion; and drawing a relational graph between the lead ion concentration and the current peak, obtaining a linear relation formula between the lead ion concentration and the current peak, igniting circular filter paper of a PM2.5 sample to be burnt into ash, dissolving the ash in an HNO3 base solution, inserting the modified electrode serving as a working electrode into a to-be-detected base solution, giving a voltage-current curve chart by virtue of the electrochemical workstation, reading the current peak of the lead ions, and calculating the lead ion concentration through a formula. The method is rapid, easy, convenient and accurate.

Description

technical field [0001] The invention relates to a method for measuring the concentration of lead ions in PM2.5, belonging to the technical field of electrochemical measurement. Background technique [0002] On January 4, 2014, the country included smog weather in the 2013 natural disaster notification for the first time. In haze weather, PM2.5 is the "culprit". PM2.5 mainly causes damage to the respiratory system and cardiovascular system, including respiratory irritation, coughing, dyspnea, reduced lung function, aggravation of asthma, chronic bronchitis, arrhythmia, non-fatal heart disease, heart and lung disease patients Serious diseases such as premature death. Lead ion is an important part of PM2.5. Lead is a heavy metal element that seriously endangers human health. Once it enters the body, it will accumulate in the human body. After reaching a certain concentration, it can affect nerves, hematopoiesis, digestion, urinary, reproductive and Developmental, cardiovascu...

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): G01N27/48G01N27/38G01N27/30
Inventor 李可鑫金根娣胡效亚
Owner YANGZHOU 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