Just because it exists in nature that does not mean there is a way for nature to deal with the quantity that would exist after we start mass producing the things.
Not that IEEE Spectrum is infallible but... http://spectrum.ieee.org/nanoclast/at-work/test-and-measurement/should-we-worry-about-graphene-oxide-in-our-water On Thu, Dec 11, 2014 at 7:55 PM, Michael Ross via EV <[email protected]> wrote: > It is still a valid question - naturally does not equate to safe. In fact > you name it, and at some level it will kill you. Water - hyponatremia. Too > much air pressure kills you if you go to low pressure too fast. Too much > light and you get burns. > > However, it is still carbon which is about as non-toxic as you can get, > just don't plug up the aleolae in your lungs with it. > > I stole this from Wiki (it is interesting): > > > > " > Pure carbon has extremely low toxicity to humans and can be handled and > even ingested safely in the form of graphite or charcoal. It is resistant > to dissolution or chemical attack, even in the acidic contents of the > digestive tract, for example. Consequently once it enters into the body's > tissues it is likely to remain there indefinitely. Carbon black was > probably one of the first pigments to be used for tattooing, and Ötzi the > Icemanwas found to have carbon tattoos that survived during his life and > for 5200 years after his death.[105] However, inhalation of coal dust or > soot (carbon black) in large quantities can be dangerous, irritating lung > tissues and causing the congestive lung disease coalworker's > pneumoconiosis. Similarly, diamond dust used as an abrasive can do harm if > ingested or inhaled. Microparticles of carbon are produced in diesel engine > exhaust fumes, and may accumulate in the lungs.[106] In these examples, the > harmful effects may result from contamination of the carbon particles, with > organic chemicals or heavy metals for example, rather than from the carbon > itself. > > Carbon generally has low toxicity to almost all life on Earth; however, to > some creatures it can still be toxic. For instance, > *carbon nanoparticles are deadly to Drosophila.*[107] > > > Carbon may also burn vigorously and brightly in the presence of air at high > temperatures. Large accumulations of coal, which have remained inert for > hundreds of millions of years in the absence of oxygen, may spontaneously > combust when exposed to air, for example in coal mine waste tips. > > > In nuclear applications where graphite is used as a neutron moderator, > accumulation of Wigner energy followed by a sudden, spontaneous release may > occur. Annealing to at least 250 °C can release the energy safely, although > in the Windscale fire the procedure went wrong, causing other reactor > materials to combust. > > > The great variety of carbon compounds include such lethal poisons as > tetrodotoxin, the lectin ricin from seeds of the castor oil plant Ricinus > communis, cyanide (CN−) and > > carbon monoxide; and such essentials to life as glucose and protein. > " > > > > On Thu, Dec 11, 2014 at 7:23 PM, via EV <[email protected]> wrote: > >> Actually, it is naturally occurring. Lightning and other electrical arcs >> will create it. The discovery is an interesting story in itself. >> >> http://en.wikipedia.org/wiki/Buckminsterfullerene < >> http://en.wikipedia.org/wiki/Buckminsterfullerene> >> >> Bruce >> >> >> > On Dec 11, 2014, at 5:00 PM, via EV <[email protected] <mailto: >> [email protected]>> wrote: >> > >> > >> > >> > Message: 5 >> > Date: Thu, 11 Dec 2014 16:21:39 +0000 >> > From: Peri Hartman via EV <[email protected] <mailto:[email protected]>> >> > To: evdl <[email protected] <mailto:[email protected]>> >> > Subject: [EVDL] nanocarbon effects on environment? >> > Message-ID: <em9483004d-f5d4-403a-a895-bb4f5e94019e@peri-laptop> >> > Content-Type: text/plain; charset="utf-8"; Format="flowed" >> > >> > From a technological point of view, nanocarbons are providing for >> > incredible new products from batteries to textiles. However, I've seen >> > nothing about their long term effects on the environment. What will >> > happen as more and more products containing nanocarbons end up in the >> > soils, rivers, and oceans? >> > >> > They aren't a naturally occurring material so, I presume, there are no >> > natural ways for organisms to process them. Will they simply pass >> > through? Will they have effects like asbestos? Will they act more like >> > radioactive particles and affect DNA? >> > >> > There seems to be scant research on this, or at least scant publicity. >> > Should our governments be more proactive in ensuring proper recycling or >> > destruction of no-longer wanted products containing nanocarbon? >> > >> > Peri >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: < >> http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141211/8beb6c24/attachment.htm >> > >> _______________________________________________ >> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >> http://lists.evdl.org/listinfo.cgi/ev-evdl.org >> For EV drag racing discussion, please use NEDRA ( >> http://groups.yahoo.com/group/NEDRA) >> >> > > > -- > Put this question to yourself: should I use everyone else to attain > happiness, or should I help others gain happiness? > *Dalai Lama * > > Tell me what it is you plan to do > With your one wild and precious life? > Mary Oliver, "The summer day." > > To invent, you need a good imagination and a pile of junk. > Thomas A. Edison > <http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> > > A public-opinion poll is no substitute for thought. > *Warren Buffet* > > Michael E. Ross > (919) 550-2430 Land > (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone > (919) 631-1451 Cell > (919) 513-0418 Desk > > [email protected] > <[email protected]> > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141211/622bd74a/attachment.htm> > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA > (http://groups.yahoo.com/group/NEDRA) > -- Home http://evanfoss.googlepages.com/ Work http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/ _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
