Water pollution 1

Which of the following parameters does not measure organic matter in water?

• BOD

• COD

• TFS

• TOD

What does BOD mean?

• Biochemical Oxygen Dissolved

• Biological Organic Demand

• Biodegradable Organic Demand

• Biochemical Oxygen Demand

Select the FALSE answer.

In the Standard BOD test,

• Temperature must be fixed at 37 ºC (human's body average)

• It must be performed in the dark

• If BOD is expected to be 200 mg/L, samples must be diluted

• The consumption of oxygen in a bottle filled with water after a certain time is measured

Select the FALSE sentence about turbidity in water:

• It is an indirect way of measuring the suspended solids

• It can be measured with a Secchi disc

• It can be measured with a nephelometer

• It can be caused by dissolved and colloidal particles

Select the FALSE sentence about SOLIDS in water:

• Total Dissolved Solids are measured through the evaporation of a water sample

• Volatile solids give an idea of the solids that are organic.

• Suspended solids must be removed from drinking water because, among other reasons, they are a shelter for microorganisms

• The Imhoff cone is used to measure settleable solids

Select which of the following contaminants can not be considered as Emerging Contaminants:

• Estrogens

• Antibiotics

• Coliforms

• Personal Care Products