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OXYGEN
THERAPY
Oxygen and Ozone Therapies is
dedicated to the advancement of Oxygen Therapies. Oxygen Therapies
include the use of Hydrogen Peroxide ( H2O2
), Ozone Therapy, Hyperbaric Oxygen, Stabilized Oxygen, and Ionization.
Health Hazards
of Ozone
Exposure Limits
The
permissible concentration for ozone to which workers may be exposed
is 0.1 ppm averaged over 8 hours. The short-term exposure limit
is 0.3 ppm for 15 minutes. The concentration of 10-ppm ozone in
air is generally accepted as Immediately Dangerous to Life or Health
(IDLH).
Detection Levels
Ozone
can be detected by its odour at concentration of about 0.04 ppm.
The nose, however, rapidly loses its ability to smell ozone.
DO
NOT RELY ON ODOUR AS A WARNING OF HIGH OZONE CONCENTRATIONS.
Acute Effects
Ozone
acts as a primary irritant, affecting mainly the eyes, upper respiratory
tract and the lungs. The onset of pulmonary edema (fluid build-up
in the lungs) may be delayed for a few hours after exposure. Inhaling
ozone at concentrations of 50 ppm for 30 minutes can be fatal. Many
people exposed to airborne concentrations of ozone around the permissible
concentration rapidly develop a headache. The headache will often
disappear after a few minutes in fresh air.
Chronic Effects
Long-term
exposure to ozone at concentrations above 0.1 ppm, or a single high
exposure, may lead to some reduction in lung function. This is because
scar tissue can form in the lung. There is also some evidence that
the oxidizing effect of ozone could lead to premature aging of the
body as a whole. Medical studies show no evidence of ozone causing
cancer or lung allergies or harming the unborn. Individuals with
a history of heart or respiratory disease should take every precaution
to avoid exposure to ozone. The owner of any ozone installation
should advise any person who may be exposed to ozone about this
hazard.
Health Effects
of Ozone
| Acceptable
Zone |
Hazardous
Zone |
Critical
Zone |
| Concentration
(ppm) |
Duration
of Exposure |
Effect |
| 0.01
- 0.04 |
|
Odour
Threshold |
| 0.1 |
Minor
eye, nose and throat irritation |
| 0.1 |
8
hour average exposure limit |
|
| Greater
than 0.1 |
few minutes |
Continuous headache,
shortness of breath |
| 0.25 -
0.5 |
2 - 5 hours |
Reduction in lung function
and the ability to do physical work (for persons with a history
of heart or lung disease) |
| 0.3 |
15 minute
exposure limit |
|
| 0.4 |
2 hours |
Reduction in lung function
during moderate work for all persons |
| Greath
than 0.6 |
2 hours |
Chest pain, dry cough |
| 1 |
1 - 2 hours |
Lung irritation (coughing),
severe fatigue |
| Greater
than 1.5 |
2
hours |
Reduced
ability to think clearly |
| Continuing
cough and extreme tiredness maybe lasting for 2 weeks. Severe
lung irritation with fluid build-up |
| 9 |
intermittent |
Severe pneumonia (arc
welders) |
| 10 |
|
Immediately Dangerous
to Life & Health |
| 11 |
15 minutes
|
Rapid unconsciousness |
| 50 |
30 minutes
|
Expected to be fatal |
Ozone Levels and Their Effects
ppm
= Parts per million volume air concentration
- 0.01 ppm: Lowest
value detectable by hypersensitive humans. Too low to measure
accurately with elaborate electronic equipment.
- 0.02 ppm: Threshold
of odor perception in laboratory environment, 50 per cent confidence
level.
- 0.03 ppm to 0.010 ppm:
The threshold of odor perception by the average person in clean
air. Readily detectable by most normal persons. These concentrations
can be measured with fair accuracy. Ozone levels measured in typical
residences and offices equipped with a properly operating electronic
air cleaner when outdoor ozone level is low. Infiltrating outdoor
ozone could cause higher indoor concentrations.
- 0.020 ppm: Threshold
of odor perception in laboratory environment, 90 per cent confidence
level.
- 0.01 to 0.125 ppm:
Typical ozone concentrations found in the natural atmosphere.
These levels of concentration vary with altitude, atmospheric
conditions and locale.
- 0.020 to 0.040 ppm:
Representative average total oxidant concentrations in some major
cities in 1964. Approximately 95 per cent or greater of these
oxidants are generally accepted to be ozone.
- 0.040 ppm: CSA maximum
limit for devices for household use. Measured as sustained concentration
in test room.
- 0.050 ppm: Maximum
allowable ozone concentration recommended by ASHRAE in an air
conditioned and ventilated space.
- 0.050 ppm: Maximum
ozone concentration produced by electronic air cleaners and similar
residential devices according to the proposed amendment of the
Federal Food, Drug and Cosmetic Act.
- 0.064 ppm: Proposed
national ambient air quality standards for photochemical oxidants
(maximum 1 hour concentration not to be exceeded more than once
per year).
- 0.100 ppm: The maximum
allowable ozone concentration in industrial working areas: permissible
human exposure - 8 hours per day, 6 days a week.
- 0.100 ppm: Continuous
maximum ozone concentration allowable ( as per U.S. Navy - in
confined quarters such as atomic submarines.
- 0.100 ppm: Maximum
allowable limit for industrial, public, or occupied spaces in
England, Japan, France, the Netherlands and Germany.
- 0.15 to 0.51 ppm:
Typical peak concentrations in American cities.
- 0.200 ppm: Prolonged
exposure of humans under occupational and experimental conditions
produced no apparent ill effects. The threshold level at which
nasal and throat irritation will result appears to be about 0.300
ppm.
- 0.300 ppm: The ozone
level at which some species of plant life began to show signs
of ozone effects. Foliage injury appears as dark stipples, light
flecks, dead patches and general discoloration. The stomata (pores)
of adult leaves are the first areas to show signs of damage.
- 0.500 ppm: The ozone
level at which Los Angeles, California, declares its Smog Alert
No. 1. Can cause nausea and headaches in some individuals. Extended
exposure could cause lung edema (an abnormal accumulation of serous
fluid in connective tissue or serous cavity). Enhances the susceptibility
to respiratory infections.
- 1.0 to 2.00 ppm:
Los Angeles, California, declares its Smog Alert No. 2 at 1.00
ppm ozone concentration and Smog Alert No. 3 at 1.500 ppm. When
human volunteers for 2 hours inhaled this range of ozone concentration,
it caused symptoms, which could be tolerated without incapacitation
with the symptoms subsiding after a few days. The symptoms were
headache, pain in the chest, and dryness of the respiratory tract.
- 1.40 to 5.60 ppm:
The pinto bean exposed to 1.4 to 5.0 ppm ozone concentrations
for 70 minutes showed some signs of severe injury to mature leaves.
- 5.00 to 25.00 ppm:
Experimentation showed that a 3-hour exposure at 12 ppm was lethal
for Guinea pigs. Welders who were exposed to 9 ppm concentration
plus other air pollutants developed pulmonary edema. Chest X-rays
were normal in 2 to 3 weeks, but 9 months later they still complained
of fatigue and exertional dyspnea (labored respiration).
- 25.00 ppm and up:
Ozone concentrations that are immediately hazardous to human life
are unknown but on the basis of animal experimentation, and exposure
at 50 ppm concentration for 60 minutes would probably be fatal.
Oxygen
therapy has to be taken under strict supervision and you must consult
your doctor prior to starting any treatment
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