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
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[0056] Example 1
[0057] Working principle: The principle used in the present invention can react at room temperature without heating, which makes the instrument device simpler.
[0058] In the present invention, the buffer solution is used as the carrier fluid, and the carrier fluid is continuously injected into the capillary tube through the carrier fluid injection pump, and only the spools of the first sampling six-way valve V4 and the second sampling six-way valve V5 are rotated in time , Then the sampling tube and indicator loop L X Connect the device to make two sections of water sample and one section of indicator DPD developer alternately cut into the carrier fluid. Driven by the carrier fluid, the water sample and the DPD developer are pushed forward and diffusely limited in the carrier fluid. The residual chlorine in the water sample reacts with the DPD developer, and the product is a purple-red liquid. The sample after the reaction After entering the colorimetric flow ...
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[0080] Example 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 fluid injection pump P1, indicator storage bottle M, carrier fluid 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 fluid injection pump P1 passes through the storage tube L through the capillary tube 1 , Multi-channel selection valve V, photoelectric flow cell T are connected with 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 capillary tub...
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