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Device for fluidly injecting and rapidly analyzing residual chlorine of water quality and analysis method thereof

A rapid analysis and flow injection technology, which is applied in the fields of chemical analysis and water environment monitoring and analysis, can solve the problems of high failure rate and short service life, and achieve the effects of low failure rate, simple flow path and saving operating costs

Inactive Publication Date: 2010-08-04
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The instrument developed by this method uses the devices developed by Delin Company, such as ceramic corrosion-resistant high-pressure injection pumps, multi-channel sample injection valves, and bubble-free flow cells, etc., so that the instrument overcomes the short service life of similar products. Disadvantages such as high failure rate

Method used

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  • Device for fluidly injecting and rapidly analyzing residual chlorine of water quality and analysis method thereof
  • Device for fluidly injecting and rapidly analyzing residual chlorine of water quality and analysis method thereof
  • Device for fluidly injecting and rapidly analyzing residual chlorine of water quality and analysis method thereof

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Effect test

Embodiment 1

[0057] Working principle: The principle used in the present invention can react at normal temperature without heating, which makes the instrument device simpler.

[0058] In the present invention, the buffer solution is used as the carrier liquid, and the carrier liquid is continuously injected into the capillary pipeline through the carrier liquid injection pump, and only the valve cores of the first sampling six-way valve V4 and the second sampling six-way valve V5 need to be rotated in due course , that is, the sampling tube and indicator quantitative tube L X Connected to the device, so that two sections of water sample and one section of indicator DPD chromogen are alternately cut into the carrier liquid. Driven by the carrier liquid, the water sample and the DPD chromogenic agent are pushed forward and limitedly diffused in the carrier liquid. The residual chlorine in the water sample reacts with the DPD chromogenic agent, and the product is a purple liquid. The reacted ...

Embodiment 2

[0081] Another flow injection rapid water quality analysis device for analyzing residual chlorine in water, such as Figure 4 As shown, it includes photoelectric flow cell T, reaction tube N, carrier liquid injection pump P1, indicator liquid storage bottle M, carrier liquid storage bottle H, multi-channel directional valve V, storage tube L 1 , the first standard sample source B1, the second standard sample source B2, the water sample source S and the capillary;

[0082] The carrier liquid injection pump P1 passes through the capillary tube through the storage tube L 1 , The multi-channel directional valve V, the photoelectric flow cell T are connected to the reaction tube N, and the waste liquid is discharged;

[0083] The indicator liquid storage bottle M, the carrier liquid storage bottle H, the first standard sample source B1, the second standard sample source B2 and the water sample source S are respectively connected to the multi-channel selector valve V through capill...

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Abstract

The invention discloses a device for fluidly injecting and rapidly analyzing residual chlorine of water quality and an analysis method thereof. The device comprises a photoelectric flow cell, a reacting tube, an indicator liquid storage vase, a current-carrying liquid storage vase, a first peristaltic pump, a current-carrying liquid injection pump, a second peristaltic pump, a current-carrying liquid three-way valve, a first sampling six-way valve, a second sampling six-way valve, a capillary tube, a sampling capillary tube, a first guide sample source, a second guide sample source, a first electromagnetic valve and a second electromagnetic valve, wherein the first electromagnetic valve and the second electromagnetic valve are switched with a water sample source. In the invention, the sampling capillary tube with a fixed length is adopted, the water sample ration is accurate, the dispersed state of the sample in the current-carrying liquid has high repeatability in a certain retained time, the measurement result is accurate, and the flow path is simple, thereby being easy for realizing automation, real-time and on-line monitoring and low failure rate. The invention can be used for on-line monitoring of the residual chlorine in drinking water and industrial recirculating cooling water, conveniently and rapidly obtaining real-time analysis data, and especially finding, reporting and handling water pollution accidents with serious idiopathic.

Description

technical field [0001] The invention relates to a device and an analysis method for rapid analysis of residual chlorine in water by flow injection, in particular to rapid analysis or online monitoring of residual chlorine content in drinking water, industrial circulating cooling water and other chlorination disinfection processes, belonging to chemical Analysis and monitoring of water environment in the field of analysis. Background technique [0002] Sanitation requirements for urban drinking water quality, drinking water must not contain pathogenic microorganisms to prevent the spread of diseases through drinking water At present, chlorine-containing disinfectants are economical, reliable, and easy to use, so the current domestic use of chlorine-containing disinfectants is the mainstream disinfection method. However, chlorine can react with organic substances in water to produce a variety of harmful substances, such as by-products such as chloroform and chloroacetic acid, ...

Claims

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Application Information

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IPC IPC(8): G01N35/08G01N21/78G01N21/31
Inventor 洪陵成
Owner HOHAI UNIV
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