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I lit a candle last night with a closed window and door. Then it hit me that there is no way there is no CO in this room. Immediately opened my window. After hearing this story, I am never sleeping with my window closed.
Article and headline are incorrect: "Carbon monoxide poisoning has also been ruled out."[1][2][3] Both MIT grads; one a founder of gaming company Glug Glug[2] and co-author of game Shard[4] 1. http://www.eastbaytimes.com/2017/01/25/berkeley-toxicology-t... 2. http://kotaku.com/game-developers-mourn-sudden-passing-of-ex... 3. http://www.sfgate.com/crime/article/Two-people-found-dead-Be... 4. http://shard-game.com/
The articles you linked are older (24th & 25th) than the article from the headline ( January 27, 2017 2:15 PM ). Further investigation and toxicology reports revealed carbon monoxide (fixed) poisoning. It appears the initial statements ruling out carbon monoxide poisoning were in error.
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No it's within hours. A simple google search will show you that.
He indicates that the CO poisoning could have been gradual. This is not mutually exclusive with faster poisoning.
"3D laser printer" probably means a Glowforge. Nobody else calls them that. Their documentation says "Lasers normally require some ventilation via a small tube out a nearby window. Our optional Air Filter that sits under Glowforge and ventilates using HEPA filters and charcoal, meaning no outside ventilation is required." That won't do much if you cut something that emits carbon monoxide when heated. That includes so…
The results are really bad anyways, it melts and burns. I'm curious though, can you get good cutting of polycarbonate using an inert gas shield? That would be interesting.
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I think CO doesn't get unstuck from hemoglobin at all. 2 weeks sounds about right, in that that would be the body's mean replacement time for a hemoglobin molecule.
The normal half-life of carboxyhemoglobin, when the patient is breathing room air, is 240 to 360 minutes (4-6 hours). The half-life of COHb can be decreased to 80 minutes with the administration of 100% oxygen.
http://www.hopkinsmedicine.org/healthlibrary/conditions/non-...
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No it's within hours. A simple google search will show you that.
He indicates that the CO poisoning could have been gradual. This is not mutually exclusive with faster poisoning.
My sense is that laser cutters should be required to come with CO detectors, and more generally we should be looking to add the appropriate chemical detectors to 3d printers and laser printers to warn of other chemical output issues. These home machines are often advertised for use in confined spaces (size is one way manufacturers compete), which is why I think it should be regulated - its not like someone took a commercial machine home with them. Laser cutters are a fairly large capital expense and bolting on a CO detector is very inexpensive (probably Safety regulations are usually written in blood. Having two deaths with such a small # of these machines out there suggests there are probably others who have cumulative CO effects already. Very sad, my heart goes out to the friends and family of Roger & Valerie.
I lit a candle last night with a closed window and door. Then it hit me that there is no way there is no CO in this room. Immediately opened my window. After hearing this story, I am never sleeping with my window closed.
Earlier quoted context omitted.
The articles you linked are older (24th & 25th) than the article from the headline ( January 27, 2017 2:15 PM ). Further investigation and toxicology reports revealed carbon monoxide (fixed) poisoning. It appears the initial statements ruling out carbon monoxide poisoning were in error.
CO or CO2? Both are possible, CO2 poisoning is quite horrible though, whereas CO poisoning may go unnoticed.