Environmental Health Hazard Flashcards
What org defines “Environmental health comprises those aspects
of human health, including quality of life, that
are determined by physical, chemical,
biologic, social, and psychosocial factors in
the environment.”
WHO
any external factor that negatively affects
your health can be considered an
environmental health hazard.
Environmental health comprises those aspects of human health, including quality of life, that are determined by _____ in
the environment.
physical, chemical,
biologic, social, and psychosocial factors
In developing countries with _______ populations , people continue to suffer from traditional risks
large rural
In developing countries with large rural populations , people continue to suffer from ________
traditional risks
In developing countries with ______ populations and ________, people are exposed to additional environmental risks
large urban; more industry
In developing countries with large urban populations and
more industry, people are exposed to _______
additional environmental risks
Rural or Urban?
unsafe water, inadequate sanitation and hygiene, and indoor smoke from domestic cooking and heating
Rural
Rural or Urban?
(including exposure to urban, industrial and agrochemical
pollution, as well as industrial accidents)
Urban
Environmental health hazards (8)
⚫ Land and climate related hazards
⚫ Atmospheric hazards
⚫ Water related hazards
⚫ Food Borne hazards
⚫ Vector Borne Hazards
⚫ Domestic Hazards
⚫ Occupational Hazards
⚫ Infrastructural hazards
associated with old, heavy and
manufacturing industries and
mining wind-blown dust also a
significant problem in some areas
Out Door Pollution /Air or Atmospheric hazards
Do outdoor pollution Increases problem in many urban
areas due to road traffic?
Yes
Hazards which are not new to us; These
hazards have been going on for certain years
in our planet (long before we were born)
Land and Climate Related Hazards
Common in both lowland coastal and inland
areas, especially in tropics and monsoon areas
Floods
What is the POSITIVE PERSPECTIVE of Volcanic eruption?
A means to
revive the Earth; To make the land fertile again
The negative impact of this hazard have
continuously became a problem for
communities; However, its positive impact is that it changes the surface of the Earth,
intended primarily to preserve the existence of life
Drought
Gases or pollutants that are
emitted from natural phenomenon
Pollutant emission
Pollutants of concern are:
(Primary pollutants)
Ozone (O3)
Suspended Particulate Matter (SPM)
Carbon Monoxide (CO)
Nitrogen Oxides (NOx)
Sulfur Dioxide (SO2)
Lead (Pb)
Volatile Organic Compounds (VOCs)
Symbol of Nitrogen Oxide
NOx
Symbol of Volatile Organic Compounds
VOCs
Symbol of Suspended Particulate Matter
SPM
Symbol of Sulfur Dioxide
SO2
Symbol of Ozone
O3
Symbol of Carbon Monoxide
CO
Symbol of Lead
Pb
Highly reactive irritating gas with an unpleasant
odor that forms in the troposphere (lowest layer of
the Earth’s atmosphere) as major component of
photochemical smog
Ozone
(O3)
Horizon is usually hazy and sometimes
cloudy that we cannot even see what is
beyond the horizon; blurred smoke.
Smog
is a chemical reaction
activated by light; This is a mixture of more than
100 primary and secondary pollutants formed
under the influence of sunlight
Photochemical Smog
A variety of small and light particles, (sometimes
they form) aerosols (droplets) suspended in the
atmosphere
Suspend Particulate Matter (SPM)
Colorless, odorless gas poisonous to (us)
animals. Formed as a result of incomplete
combustions of carbon-containing fuels
Carbon Monoxide(CO)
Formed as a result of incomplete
combustion of carbon containing fuels
(2C + O2 → 2CO)
Health effect of Carbon Monoxide
Will die of asphyxiation in the
sense that you will die due to lack of oxygen
(Prevents the RBC to accept oxygen)
According to WHO, _______ is also a
potential source of carbon monoxide (secondhand
smoke)
Cigarette smoke
(A combination of gases composed primarily of)
NO (Nitric Oxide), NO2 (Nitrogen Dioxide), N2O
(Nitrous oxide)
Nitrogen Oxide (NOx)
Reddish brown irritating gas that gives
photochemical smog its brownish color. Can be converted to nitric acid (HNO3) a major component of acid deposition (acid rain)
Nitrogen Oxide (NOx)
The reason why if you see smog, it tends to be _______
hazy
Brought about by the
conversion of pollutant gases
such as nitrogen oxide into
nitric acid
ACID DEPOSITION (ACID
RAIN)
Nitric acid is then being returned
to Earth in the means of _____
rain