Reaction tank colorimetric device for high-precision water quality detector and manufacturing method of reaction tank colorimetric device
A high-precision technology for water quality testing, applied in measuring devices, chemical method analysis, chemical analysis by titration, etc., can solve problems such as difficult processing, no testing instruments, and differences in colorimetric environments, and achieve impact resistance Improve and enhance the detection accuracy and reduce the effect of colorimetric error
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Embodiment 1
[0027]A reaction cell colorimetric device for a high-precision water quality detector. The colorimetric device is specifically a structure including six colorimetric cells 4 processed on the basis of an integral polymethyl methacrylate-based material block. The color device as a whole is the same base body 1, and six colorimetric cells 4 cavities are processed in the base body 1, and two through holes are opened on the upper end of each colorimetric cell 4 cavity, which are respectively the feed port 2 and the exhaust port 3, One side of the bottom of the cavity of each colorimetric cell 4 is provided with a drain port 5, and each drain port 5 communicates with the main drain channel 7 through the corresponding drain channel 6, and the main drain channel 7 is provided with There is a sealing rod 8 that moves coaxially with the main drain channel 7 and is adapted in shape, and a rubber sealing plug corresponding to the shape of the interface between each drain channel 6 and the ...
Embodiment 2
[0046] The whole is consistent with Example 1, the difference is:
[0047] S2: Sealant preparation
[0048] ①Add 3.8g of ferric chloride hexahydrate to 35mL of ethylene glycol, stir until completely dissolved, then add 0.85g of polyethylene glycol 2000 and continue stirring to dissolve, and then add 1.45g of sodium acetate trihydrate after the dissolution is complete, Stir for 2.5h-3h to obtain a uniform mixed solution;
[0049] ④Weigh 100g of the expanded graphite obtained in step ③, add it to 19L of N,N-dimethylformamide, treat it ultrasonically for 28 hours, then filter out the solid content and wash it alternately with water and ethanol for 2-3 rounds. Drying at 60°C-65°C to obtain expanded graphite treated by ultrasonic exfoliation;
[0050] ⑤Measure 3L of concentrated phosphoric acid and 9.1L of concentrated sulfuric acid respectively, stir them in an ice-water bath to fully mix the two to obtain a mixed acid, then add 103g of the expanded graphite obtained in step ④ t...
Embodiment 3
[0052] The whole is consistent with Example 1, the difference is:
[0053] S2: Sealant preparation
[0054] ①Add 3.57g of ferric chloride hexahydrate to 30mL of ethylene glycol, stir until completely dissolved, then add 0.73g of polyethylene glycol 2000 and continue stirring to dissolve, and then add 1.3g of sodium acetate trihydrate after the dissolution is complete, Stir for 2.5h-3h to obtain a uniform mixed solution;
[0055] ④Weigh 95g of the expanded graphite obtained in step ③, add it to 19L of N,N-dimethylformamide, ultrasonically treat it for 28h, then filter out the solid content and wash it alternately with water and ethanol for 2-3 rounds. Drying at 60°C-65°C to obtain expanded graphite treated by ultrasonic exfoliation;
[0056] ⑤Measure 3L of concentrated phosphoric acid and 8.9L of concentrated sulfuric acid respectively, stir in an ice-water bath to fully mix the two to obtain a mixed acid, then add 98g of the expanded graphite obtained in step ④ to the mixed ...
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