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Ozone Threshold Levels


Ozone Threshold Levels

< p>what is PPM?& nbsp;
PPM (units in million units) ppb is one in billion units.< / strong>< / p> < p>the concentration of ozone in air and water is shown as “ppm” (parts Thu milion-parts per million).< / p>

1 ppm in air equals approximately 2.1 mgr/m3 of ozone.  depends on The Sun, the season and the geographic location, but as altitude increases, so does the ozone concentration.< / p>

ozone concentration in the Air, < /strong > < / p>

    < li>0.003 – 0.015 level of smell sensation.< / li> < li>0.003 – 0.005 ppm in clean air, sea level concentration is observed.< / li> < li>0.005 – 0,010 forest air.< / li> < li>at 0,010 ppm levels, disinfectant and its effects begin. Although it depends on the sensitivity of the person, at this level the smell begins to be felt.< / li> < li>0.020 ppm destroys 90% of airborne bacteria.< / li> < li>0.020 – 0.050 air is also present after lightning. It can reach levels of 0.100 ppm immediately after a lightning storm.< / li> < li>0.050 continuous inhalation FDA safety level. (Up to 0.050 ppm concentration can be in unlimited time.) < li>0.100 time restriction 8 hours / day as FDA (0.1 ppm.) as safety level by given.< / li> < li>0.120 ppm has been designated as the city air threshold level by the EPA .< / li> < li>1,000 – 2.0 is known as human tolerance level. (cough, dry throat, tears, that is, from this limit, the body, nasal burning, tears such as reactions, ozonlu refuses to stay in the environment. People with asthma are more affected. Even at this level, ozone does not cause permanent damage to the body. Only local irritation has occurred; in a few hours the body will repair itself.< / li> < li>5,000-10 pulse rate, body pain, numbness duirum can be observed. If exposure persists, pulmonary edema occurs.< / li> < li>15,0 – 20,0 small animals also die for 2 hours.< / li> < li>50. ppm human life is also endangered for 1 hour.< / li> < / ul>