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North America After the Collapse
Oh thanks bob the sailor now I'm really reassured about my husbands
job ... I'm now checking the want ads Michelle iOn Fri, 23 Jan 2004 20:53:43 -0600, Bob G wrote: On Fri, 23 Jan 2004 18:27:03 -0600, charles krin wrote: Hydrogen sulfide (H2S), the so called 'rotten egg gas', is substantially more toxic, almost as toxic as Hydrogen Cyanide (HCN)...and despite the strong smell initially, then nose rapidly adapts, and there is no further warning... ck Most folks don't ever get involved in the situations where one is likely to encounter significant levels of hydrogen sulfide. One place, of several, where one may routinely encounter it is in ship's holds. And I'm an old retired sailor, so learned about the stuff. Real sneaky stuff, besides being dangerous. One can detect the odor at about .03 ppm with the human nose. At about 10 ppm of hydrogen sulfide your nose loses it's sense of smell in as little as 3 minutes. So one might think it was just a little passing gust of the gas and it's now gone. But that may not be true. At about 30 ppm, the human nose loses it's sense of smell almost immediately. Yah just detect the odor, then it's gone. Because now yah can't smell anything. Guy in the previous post mentioned 800 ppm of CO as being hazardous if you're exposed to it long enough. With hydrogen sulfide, at 800 ppm, you're going nowhere. Not escaping. You hit the deck abruptly and promptly. Immediate unconciousness. Bob ***Who once had the unpleasant chore of assisting in the recovery of 3 bodies done in my hydrogen sulfide. |
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