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There are three OD's used Total Oxygen Demand (TOD), Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD)
They all measure the amount of oxygen that would be required to consume organic material in the water, BOD is the lowest (usually) as it measures demand from microbes eating easily digested organics (sugars etc), COD measures the demand from all other organics (alcohols etc) measured by digesting the material in strong chemical oxidants, and TOD is the total of the two.
Oxygen demand is important to know in waste handling as reducing the oxygen in receiving stream can harm fish and other aquatic life.
What else can I help you with?
How does algae bloom affect dissolved oxygen?
Nutrients remove oxygen from water either by direct oxidation or through being consumed by plants or animals (bacteria). The potential for oxygen removal is measured by: BOD (biochemical oxygen demand) measures the amount of oxygen that bacteria can remove, COD (chemical oxygen demand) measures how much oxygen can be removed by chemical processes, and TOD (Total Oxygen Demand) is the total of all oxygen removed biochemically and chemically. Generally, colder water can hold more dissolved oxygen than warmer water. If you make a rough nomograph and plot the same amount of dissolved oxygen for a cold and warm temperature, you will see that the cold water is less saturated (can hold more oxygen) than the more saturated warm water. Nutrients effect oxygen levels indirectly in a process called eutrophication. If the nutrient happens to be a limiting nutrient (such as phosphate in lakes), then the carrying capacity of the photosynthetic organisms is raised. This allows for a population growth, commonly seen as algal blooms. The population of decomposers is then boosted too, since they feed (decay) on the phytoplankton/algae. As more and more organic material settles to the benthic zone, decomposers increase and need more oxygen for respiration. This results in oxygen depletion in the ecosystem, making life for marine animals such as fish difficult/impossible.
6 How much is the theoretical oxygen demand of 1mM acetate solution?
The theoretical oxygen demand (ThOD) of acetate is 2 moles of O₂ per mole of acetate. To calculate the ThOD of a 1mM acetate solution, you would convert mM to moles (1 mM = 0.001 moles) and then multiply by the ThOD (2 moles O₂/mole acetate) to get 0.002 moles of O₂.
What rhymes with iPods?
shod, rod, mod, cod, hod, dod, tod, bod, wod, god, sod, etc.
The chemistry of aquatic ecosystems is determined my what?
This depends on pH, temperature, oxygen concentration (TOD, BOD, COD), concentration of many impurities, radioactivity, water flow speed, biology of the water, etc.
How does the temperature of water effect the dissolved oxygen?
Well, dissolved oxygen impacts water quality because if the level of the dissolved oxygen is too low then organisms can die. _________________________________________________________________ That is okay, but I want to what dissolved oxygen tests for. ------ For the water quality are tested: - total oxygen demand (TOD) - biochemical oxygen demand (BOD) - chemical oxygen demand (COD) - sometimes, carbonaceous biochemical oxygen demand (CBOD) For details about the analytical procedures I recommend you to read a book or a collection of analytical methods for water, searching in a library or searching on the Internet.
Who was Vladimir Tod's mom?
Melina Tod
Who is Vladimir Tod's mother?
It is Melina Tod
What is the birth name of Michael Tod?
Michael Tod's birth name is Michael Aron Tod.
What is the birth name of Tod Coakley?
Tod Coakley's birth name is John Tod Coakley.
What is the birth name of Tod Whipple?
Tod Whipple's birth name is Tod Brantly Whipple.
What is the birth name of Tod Huntington?
Tod Huntington's birth name is Tod Warren Huntington.
How tall is Tod Huntington?
Tod Huntington is 6'.
When was Tod Davies born?
Tod Davies was born in 1955.
Where is tod lubitch?
did tod lubitch die? Where is he today did he die?
