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Factors which alter chlorine in a swimming pool (Adjusting factors…
Factors which alter chlorine in a swimming pool
Adjusting factors
pH
Acidic conditions
Basic conditions
Alkalinity
Temperature
Storage of chlorine
Water temperature
Organic nitrogen
Sweat
Urea
Organisms
Algae
Amoeba
Bacteria
Viruses
Bromine
Time
Decomposition of free chlorine
Sunlight
UV radiation
Cyanuric acid
Pool stabilizer
Possible questions
How does pH adjust the levels of chlorine in a pool?
Pros
Easily explainable
Quick results
Cons
pH change over time
Difficult without adding chemicals
How does the introduction of organisms alter the chlorine levels in a pool?
Pros
Decomposition occurs naturally
Plants as source
Cons
Ethical using organisms
Poor accessibility
Difficult to control
Possible difficulty in testing
How does adding chemicals change the chlorine levels in a pool?
Pros
Can test many chemicals
Easy to know amounts of additives
Cons
May have no effect on chlorine levels
May react adversely
May not be accessible
What effect does temperature have on the decay of chlorine in pools?
Pros
Can test chlorine decay in water
Can test chlorine decay out water
Storage
Easy to test
Cons
Cooling of mixture when measuring
Difficulty in exposure control
What levels of UV affect the concentration of chlorine in a pool?
Pros
Easily accessible
Very relevant
Cons
Possibly difficult to limit UV exposure
Exposure difficult to measure
Long test time
Measuring techniques
Titration
With sodium thiosulphate
Pros
Easily measure reactants
Cons
Time required in setup
Chlorine reading machine
With DPD
Pros
Easily testable
Cons
Not readily available
Pool test strips
Visual test
Cons
Not an accurate value produced
Pros
Easily defined
DPD
Calorimeter
Pros
Quantifiable values
Cons
Not readily available