Method and procedure of detecting chloride ion content in boiler water
The chloride ion content in the boiler feed water is too high, which will work together with the dissolved oxygen to cause complex electrochemical corrosion, resulting in corrosion perforation and equipment accidents. Whether the chloride ion content in the boiler water exceeds the standard is particularly important. With ERUN-ST-MU 97 desktop multi-parameter water quality detector developed and produced by Erun, the detection methods and steps of chloride ion content in boiler water are explained in detail.
1.Preparation of blank samples
Put 10.0mL distilled water in a clean special colorimetric tube, add 2.0mL reagent (1), shake well, add 3.0 mL reagent (2), shake well, stand static color for 10min, and test on the machine.
2. Preparation of the samples
When the chloride ion concentration is (chloride ion _L) 0.20 ~ 10.0mg/L: take 10.0mL sample to be tested in the cleaned special colortric tube, add 2.0 mL reagent (1), shake well, add 3.0 mL reagent (2), shake well with plug, static color for 10min.
When the chloride ion concentration is (chloride ion _H), 10.0 ~ 100 mg/L: take 1.0mL sample to be tested in the cleaned special colorimetric tube, add 9.0 mL of distilled water, add 2.0 mL of reagent (I), shake well, add 3.0 mL of reagent (2), shake well, and stand color for 10min.
3. Equipment boot
Connect the power cord and turn on the switch.
4. Blank measurement
Under the main menu, click "Curve Selection" and select the corresponding curve. Then wipe the blank to be tested, will Put the colorimetric tube into the colorimetric hole, under the main menu, click the "blank measurement" item, after the light absorption value is stable, press " Yes Recognition " key to confirm, the instrument automatically adjust zero.
5. Sample measurement
Wipe the sample tube and put it in the color hole. Under the main menu, click "Sample Measurement" item for the instrument Enter the sample measurement interface, and directly display the chloride ion (chloride) concentration value (mg/L).
6. After the testing is completed
After the measurement is completed, clean the colorlet tube and dry for later use. Shutdown the device and disconnect the power supply.
7. Principle of measurement
The chloride ion (chloride) reacts with thiocyanate, and the exchanged thiocyanate ion reacts with the ferric iron ion to form a red iron thiocyanate complex, which is measured by spectrocomparison.
The above is the detection method and steps of the chloride ion content in the boiler water. If you need to know the detailed information of the instrument, you can contact the customer service directly. The customer service team of Erun environmental protection will serve you at any time.
