Method for detecting content of sulfite in water by gas-phase molecular absorption spectrum

A sulfite, gas-phase molecule technology, applied in the measurement of color/spectral characteristics, etc., can solve the problems of secondary environmental pollution and mercury pollution, and achieve the effects of fast analysis speed, simple operation and shortened analysis period.

Inactive Publication Date: 2009-06-10
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Potassium tetrachloride, a highly toxic reagent, will be used in the determination,

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 content of sulfite in water by gas-phase molecular absorption spectrum
  • Method for detecting content of sulfite in water by gas-phase molecular absorption spectrum
  • Method for detecting content of sulfite in water by gas-phase molecular absorption spectrum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Choose different substrates of wastewater, including natural river water, steel pipe oil, pump station water and steel plant continuous casting wastewater, take 5ml water samples, acidify them with 2mol / L sulfuric acid solution, and convert sulfite into sulfur dioxide:

[0012] SO 3 - +2H + SO 2 +H 2 O, carrier gas flow rate 800ml / min, reaction time 15s,

[0013] Then, using a zinc hollow cathode lamp as the excitation light source, the molecular absorption intensity of sulfur dioxide at a wavelength of 202.6 nm was measured. The results are shown in the following table. Take another 5ml water sample, and add 1ml10mg / L sodium sulfite standard solution to Maluhe and continuous casting water samples, steel pipe containing oil, add 0.5ml10mg / L sodium sulfite standard solution to the water sample of 1# pump station, and the result of standard addition recovery See Table 1:

[0014]

[0015]

[0016] Table 1 Using the method of the present invention to add standard to dete...

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 relates to a method for quantitative determination of sulphite, particularly to a method of measuring content of sulphite in water. A method of measuring content of sulphite in water through gas phase molecular absorption spectrometry, including a gas phase molecular absorption spectrometer, comprises the following steps: step 1 of converting sulphite into gaseous sulfur dioxide; step 2 of using zinc hollow cathode lamp as excitation source, measuring molecular absorption intensity of sulfur dioxide at wavelength 202.6 nm, thereby performing quantitative analysis on sulphite. The inventive method of using measuring content of sulphite in water through gas phase molecular absorption spectrometry has convenient operation, fast analysis speed and small environmental pollution.

Description

Technical field [0001] The invention relates to a method for determining the content of sulfite, in particular to a method for determining the content of sulfite in water. Background technique [0002] With the rapid development of modern industry, acid rain caused by sulfur dioxide pollution has become more and more harmful to the environment. After sulfur dioxide enters the water body, it will exist in the water as a dynamic balance of sulfite and bisulfite, which is harmful to fish and fish in the water. Aquatic organisms have certain toxic effects, and their reducing properties can quickly consume dissolved oxygen in water and deteriorate water quality. At present, the analysis of sulfites has not been carried out much. Common analysis methods include spectrophotometry, chromatography, electrochemical methods, etc., but these methods generally have disadvantages such as low sensitivity and large interference. The most widely used spectrophotometric method to determine the sul...

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): G01N21/31
Inventor 汪慧萍陈慧
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap