Comments on: Nanotech consumer products inventory launched http://www.foresight.org/nanodot/?p=2183 examining transformative technology Wed, 03 Apr 2013 18:23:47 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: EH&S Student http://www.foresight.org/nanodot/?p=2183#comment-35147 EH&S Student Wed, 06 Sep 2006 22:03:50 +0000 http://www.foresight.org/nanodot/?p=2183#comment-35147 True--but there is a nanoparticle spectrum, with "Beneficial/Harmless" on one end and "Toxic--DANGER!!!!" on the other. There are naturally-occurring or "incidental" nanoparticles, like in smoke (as you mentioned). Sea spray, diesel exhaust, even cooking can produce nanoparticles. Some, like the ones in diesel exhaust, are already acknowledged as a HEALTH THREAT. We should be very cautious with these newly-engineered nanomaterials and see where on the spectrum they fall... True–but there is a nanoparticle spectrum, with “Beneficial/Harmless” on one end and “Toxic–DANGER!!!!” on the other. There are naturally-occurring or “incidental” nanoparticles, like in smoke (as you mentioned). Sea spray, diesel exhaust, even cooking can produce nanoparticles. Some, like the ones in diesel exhaust, are already acknowledged as a HEALTH THREAT. We should be very cautious with these newly-engineered nanomaterials and see where on the spectrum they fall…

]]> By: Robert Bradbury http://www.foresight.org/nanodot/?p=2183#comment-8156 Robert Bradbury Sat, 11 Mar 2006 22:17:13 +0000 http://www.foresight.org/nanodot/?p=2183#comment-8156 Lets see. Every drug now on the market and a significant majority of *all* molecules in the foods that we consume are "nanoscale". Nanoscale would include particles in the smoke from exhausts, home fireplaces, forest fires, urban building & home fires, certainly the dust cloud produced from the 911 attacks, fragrances & pollen from most perfumes and flowers and the fine grits (typically various metal oxides) used in many polishing processes (in lapidary polishing, mirror polishing, gem polishing, etc.). I've noticed a few patents involving particles in the 5-40nm range in just 5 minutes of googling including one for dental fillers. And then of course "carbon black" aka "soot" is an easily produced nanoscale material. Quick -- lets outlaw matches so people cannot manufacture such a deadly substance. Robert Lets see. Every drug now on the market and a significant majority of *all* molecules in the foods that we consume are “nanoscale”. Nanoscale would include particles in the smoke from exhausts, home fireplaces, forest fires, urban building & home fires, certainly the dust cloud produced from the 911 attacks, fragrances & pollen from most perfumes and flowers and the fine grits (typically various metal oxides) used in many polishing processes (in lapidary polishing, mirror polishing, gem polishing, etc.). I’ve noticed a few patents involving particles in the 5-40nm range in just 5 minutes of googling including one for dental fillers. And then of course “carbon black” aka “soot” is an easily produced nanoscale material. Quick — lets outlaw matches so people cannot manufacture such a deadly substance.

Robert

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