P2.1 CHEMICAL METHODS of disinfection part 1

Question 1

(5) CHEMICAL METHODS of disinfection:

Answer 1

1. alcohol
2. halogens
3. heavy metals
4. quaternary ammonium compounds (QUATS)
5. phenol/ phenolic compounds/bispenols

Question 2

• dehydration
• lipid dissolution
• protein denaturation
• 70% alcohol

dissolution - termination or destruction

Minimum Contact Time (MCT): 1-2 mins. or until completely evaporated

Answer 2

Alcohol

Question 3

Halogens mr

Answer 3

• inhibits protein function
• acts as strong oxidizing agent

Question 4

• a halogen disinfecting agent
• treats water

Answer 4

Chloride in Sodium Hypochlorite (NaOCl)

Question 5

halogen

• household antiseptic
• surgical antiseptic

Answer 5

Iodine in Betadine

Question 6

Heavy Metals mr

Answer 6

denature enzymes & other essential bacterial proteins

Question 7

(3) examples of heavy metals?

Answer 7

1. mercury
2. copper
3. silver

Question 8

an active ingredient or MERTHIOLATE

Answer 8

Mercury

Question 9

Cu that are used as algaecide

Answer 9

Copper Sulfate crystals

Question 10

1% Silver Nitrate is used as a ____ in ____ in suspected cases of ____.

Answer 10

1. PROPHYLACTIC agent
2. CREDE’S PROPHYLAXIS
3. OPTHALMIA NEONATRUM