Toxic Gases

Question 1

Why toxic gases are highly toxic?

Answer 1

1. Colorless and odorless
2. Highly toxic in low concentration.
3. Late presentation
   ______________
4. Administrated via inhalation
5. Widely used
6. Elaborated naturally
7. used as war gases

Question 2

Classification of toxic gases with ex:

Answer 2

1. Chemical asphyxiants (blood gases) or systemic asphyxiants: cyanide and CO
2. Simple asphyxiants (inert gases) : CO2 and methan
3. Irritant gases (vesicants): ammonia and chlorine
4. Nerve gases: sarin soman tabun

Question 3

The gases that displace oxygen form the ambient air and reduce the partial pressure of the available oxygen:

Answer 3

Simpe asphyxiants

Question 4

Examples of simple asphyxiants:

Answer 4

CO2, nitrogen, aliphatic hydrocarbon gases and nobel gases

Question 5

The gases that damage the respiratory tract by destroying the integrity of the mucosal barrier:

Answer 5

Respiratory irritants or the irritant gases (corrisve effect)

Question 6

Examples of irritant gases :

Answer 6

Ammonia, chloramine, chlorine, formaldehyde, and hydrogen sulfide
Heavy metals related gases (copper fumes, mercury vapor zinc chloride, oxide)

Question 7

The gases that produce significant systemic toxicity by specialized mechanisms:

Answer 7

Systemic asphyxiants:
CO, cyanide, and smoke