EOP-D73-001-7-002-05E
E.J. OZONE PRODUCTS
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Biological influences caused by Ozone
Ozone concentration
[
ppm
]
Influences
0.01–0.02
Sensible odor (with the sense of smell becoming gradually accustomed to
the smell)
0.1
Strong odor stimulant to the nose and throat.
0.2–0.5
Eyesight weakens by 3 to 6 hour's exposure.
0.5
Apparently stimulant to the upper respiratory tract.
1–2
Exposure for 2 hours presents a headache, a pain in the chest, and thirsty at
the upper respiratory tract and coughing.
Repeatable exposures will lead to chronic toxicities.
5–10
Increase of pulses and pulmonary edema will be caused.
15–20
Small animals will die within 2 hours.
50
Life of man will be jeopardized in one hour.
Report on Ozone Processing' by Japan Water Works Association, August 1984, p. 40
Threshold limit value:
Japan : 0.1 [ppm] (recommendation by Japan Society for Occupational Health)(2010
－
2011)
USA : 0.1 [ppm] TLV of TWA by ACGIH (1993–1994)
TLV
: Threshold limit value
TWA
: Time Weighted Average Concentration
ACGIH : American Conference of Governmental Industrial Hygienists
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Dangerous characteristics for Ozone treatment
DANGER
Ozone has powerful oxidation effect, and it is used for many kinds of substance by the reaction,
such as Oxidation/Dissolution, Sterilization, etc., but it is also informed that Ozone has
'Toxicity' for human bodies.
Therefore, precautions should be taken to any exposure to Ozone leakage on the piping
connections for Ozone sampling system and/or the wetted parts, and also the related
equipments.