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

Method and detecting device for online detecting water pH value based on sensitive membranes

A detection device and sensitive film technology, which is applied in the measurement of color/spectral characteristics, etc., can solve the problems of low detection accuracy, deviation, indicator leakage measurement results, etc., and achieve the effect of avoiding baseline drift.

Inactive Publication Date: 2016-06-15
NAT DEEP SEA CENT
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a multi-wavelength measurement method for online detection of water body pH based on a sensitive membrane, which overcomes the shortcomings of low detection accuracy and deviation of measurement results caused by indicator leakage in the prior art

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 and detecting device for online detecting water pH value based on sensitive membranes
  • Method and detecting device for online detecting water pH value based on sensitive membranes
  • Method and detecting device for online detecting water pH value based on sensitive membranes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] The basic principle of the method for the online detection of water pH value based on the sensitive membrane proposed in this embodiment is as follows: 2 I) is an example, its secondary ionization constant is close to the pH value of the water body to be measured. When the sensitive membrane is in contact with the water body, the sensitive...

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
absorbanceaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for online detecting the water pH value based on sensitive membranes.The method includes the following steps that the sensitive membranes are prepared; buffer solutions with the different pH values are prepared, and absorption spectra of the sensitive membranes are obtained; the molar-absorption-coefficient ratios e1, e2 and e3 and multiple absorbance ratios R are calculated; linear regression curves are prepared through the molar-absorption-coefficient ratios and the multiple absorbance ratios to obtain the slope 1 / n and the intercept pK of the linear regression curves; the sensitive membranes are immersed into to-be-detected water, and the absorbance ratio R under the present condition is calculated; the molar-absorption-coefficient ratios e1, e2 and e3, the slope 1 / n, the intercept pK and the absorbance ratio R<x> under the present condition are substituted into the formula to calculate the pH value of the to-be-detected water.The invention further provides a detecting device for online detecting the water pH value based on the sensitive membranes.The method has the advantages of being high in detection accuracy and flexible in use.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, and in particular relates to a method and a detection device for online detection of pH value of water body based on a sensitive membrane. Background technique [0002] The pH value is an important parameter for water quality monitoring and evaluation, and the monitoring results are of great significance for ecological environment monitoring, ocean acidification, carbon budget, and geochemical cycles. [0003] The methods for online monitoring of the pH value of water in the prior art are mainly electrode method and photometric method. The pH electrode used in the electrode method measurement is small in size, low in energy consumption, reusable and high in measurement frequency, but the potential will drift after long-term use, the signal is susceptible to electromagnetic interference, and it has the defects of low accuracy and regular calibration. The photometric method based ...

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): G01N21/31
CPCG01N21/31
Inventor 王洪亮赵月霞丁忠军刘保华
Owner NAT DEEP SEA CENT
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