COD is the most popular substitute test to BOD for setting up the concentration of natural and organic issue in wastewater samples.
This returns any condensation to your reacted sample. Usually do not invert the vial right away before inserting into your instrument. It is necessary to permit time for undissolved particles to settle to the bottom and away from the light path with the digital instrument.
Ensure that the reagent blank vial is identical lot variety because the test vials. Notice: At the least a single reagent blank need to be run with each set of samples with each new large amount variety of COD test vials.
The COD test is often a handy measure of effluent excellent of the wastewater procedure plant. It offers a quick, approximate measure of all chemically oxidizable substances and can be utilized to identify efficiency issues in procedure facilities.
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Khối lượng oxy cần thiết để oxy hóa một hợp chất hữu cơ thành dioxide cacbon, amonia và nước được thể hiện dưới dạng tổng quát là:
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COD means “Chemical Oxygen Demand” and it is a evaluate of the amount of oxygen necessary to chemically oxidise organic and natural substances in water for example ammonia or nitrate, in applications for instance lakes, rivers or wastewater that have been contaminated by domestic or industrial waste.
Comprehension Chemical Oxygen Demand (COD) is important to grasp check here your organisational impact on h2o excellent and aquatic organisms. It may be quickly calculated to present specifics of waterbodies and effluents from industrial and cure plants.
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Solutions concentrating on the detection method haven't nonetheless been fully formulated, as their only function is to generate the final response far more delicate.