How Too Much Oxygen can be deadly and dangerous

That is right, too much or too little oxygen can be deadly or dangerous

So what are the except-able Levels of oxygen?

Our atmosphere normally has on average about 20.9% Oxygen in it.  The minimal Oxygen Levels which we need for healthy organ function is 19.5%.  which means there is only a puny 1.4% margin of error in current oxygen levels for healthy organ function.

Even though we can breath and live with 100% oxygen for breathing indefinitely, you wouldn't want to live in that world for very long.  It is recommended that the maximum oxygen levels at 1 atmospheric pressure is 24%, otherwise fires can ignite and be difficult if not impossible to put out.  If you think today's forest fires are bad, wait until the oxygen levels get above 24% and there won't be a fire truck big enough to put out that fire.

Remember the Apollo 1 crew were incinerated because they were breathing pure 100% oxygen at 1 atmosphere which triggered a spontaneous fire from the over heated wiring.

Even though we can breath 100% oxygen at 1 atmospheric pressure, this is not the case at other atmospheric pressures.  This is why Recreational SCUBA diving ends at 130 to 150 feet.  Because with 20.9% Oxygen at 200ft Oxygen becomes a deadly poison at 8 atmospheres, and will start to liquefy lung tissues and dissolve away your nervous system.  In order to dive deeper than 150ft, you must be a certified SCUBA diver in the use of computerized Re-breathers that can remix the oxygen ratios at lower levels at higher pressures, so that you can dive down to 200ft and deeper.  But requires very specialized extremely expensive SCUBA Computerized Diving equipment and advanced technical training.

Nitrox SCUBA tanks which contain 67% oxygen, are limited to only a diving depth of 60ft.  But you can stay under water much longer and have more energy during the dive if you don't go below the 60ft depth.


By Edmund Williams and Daily Health Guide Blogg