Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Nitrite online testing device and testing method

An on-line testing, nitrite technology, applied in the direction of chemical analysis using titration method, can solve the problems of cumbersome testing, unenvironmental testing reagents, poor anti-interference performance of nitrite testing, etc., to achieve the effects of environmental protection reagents and convenient operation.

Inactive Publication Date: 2015-11-25
帕克环保技术(上海)有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention discloses a nitrite on-line test device and a test method, which are used to solve the problems of poor anti-interference, non-environmental protection of test reagents, cumbersome tests, high cost and impossibility of promotion 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
  • Nitrite online testing device and testing method
  • Nitrite online testing device and testing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below with reference to the drawings and embodiments:

[0023] figure 1 It is a schematic diagram of the structure of the nitrite online test device and test method of the present invention, please refer to figure 1 , An online testing device for nitrite, which includes:

[0024] A reaction flask 1, which has a water sample inlet 14, a catalyst inlet 11, and a carrier gas inlet 15;

[0025] An absorption bottle 2, which is connected to the reaction bottle 1; the absorption bottle 2 has an absorbent inlet 22;

[0026] A test bottle 3, the absorption bottle 2 and the test bottle 3 are connected; the test bottle 3 has a titrant inlet 31; the test bottle 3 also has a sensor 33;

[0027] A titrator 4, the titrator 4 has an interface unit 41, and the sensor 33 is connected to the interface unit 41.

[0028] A first peristaltic pump 61 is provided between the water sample inlet 14 and the reaction bottle 1 of the present invention; a second...

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 provides a nitrite online testing device and a testing method, and solves the problems that in the prior art, anti-interference performance is bad in the nitrite tests, the used reagent is not environment-friendly, the test is complicated, and the cost is high. In the provided testing method, a special catalyst is used to selectively convert the nitrite in water into nitrogen dioxide gas, then the nitrogen dioxide is efficiently absorbed, and finally titration analysis is carried out. Compared with the diazo-coupling spectrophotometric method, the interferences of interfering ion, high turbidity and high colority are maximally eliminated in the provided testing method. In other aspect, a nitrite online analysis instrument is adopted in the provided method, so the complicated calibration operation in the spectrophotometric method is not needed. Thereby, the provided method and device can precisely detect the nitrites in complicated water online, and at the same time, has the advantages of environment-friendly reagent, convenience in operation, and low cost.

Description

technical field [0001] The invention relates to a water quality analysis test method and a corresponding online test device, in particular to an online nitrite test device and a test method. Background technique [0002] According to relevant national standards and literature retrieval, the standard determination methods of nitrite in water usually use diazo coupling spectrophotometry, ion chromatography and gas phase molecular absorption method. For diazo coupling spectrophotometry, the required reagents and color reaction stability are poor, and the reagents themselves are highly toxic carcinogens. In addition, there are many interference factors in the test process, such as red interference caused by trichloramine in water; precipitation caused by iron, lead and other ions; copper ions can decompose diazonium salts as a catalyst; high turbidity and chromaticity are also important interference factors. Other photometric methods based on the principle of color development ...

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): G01N31/16
Inventor 张巍
Owner 帕克环保技术(上海)有限公司
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
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