[Stoves] ***SPAM*** Re: ***SPAM*** RE: Stoves Digest, Vol 93, Issue 5

[nari phaltan]

I hope this may throw some light on the inhalation of ultra fine particles.
http://nariphaltan.org/pranayam.pdf

Cheers.

Anil

Nimbkar Agricultural Research Institute (NARI)
Tambmal, Phaltan-Lonand Road
P.O.Box 44
Phaltan-415523, Maharashtra, India
Ph:+91-9168937964
e-mail:nariphaltan at gmail.com
           nariphaltan at nariphaltan.org

http://www.nariphaltan.org

http://nariphaltan.org/about-2/awards/  Awards for NARI staff
http://nariphaltan.org/nari-in-press/  NARI in press


On Mon, May 21, 2018 at 12:30 AM, Philip Lloyd <plloyd at mweb.co.za> wrote:

> Dear Xavier
>
>
>
> The question is – what capture mechanism can you dream up for a sub 0.5
> micron particle?  It behaves just like a gas, has effectively no momentum.
> So how does it “penetrate the body”? That is NOT true for 2,5-0.5 micron
> particles – their kinetic energy at normal temperatures is enough to allow
> them to interact with the stuff we are made of.
>
>
>
> Philip
>
>
>
> *From:* Stoves [mailto:stoves-bounces at lists.bioenergylists.org] *On
> Behalf Of *Xavier Brandao
> *Sent:* Sunday, May 20, 2018 8:18 PM
> *To:* 'Discussion of biomass cooking stoves' <stoves at lists.bioenergylists.
> org>
> *Subject:* Re: [Stoves] ***SPAM*** Re: ***SPAM*** RE: Stoves Digest, Vol
> 93, Issue 5
>
>
>
> Dear Philip, Crispin,
>
>
>
> Actually what I read online about ultrafine particles (on a few French
> articles) is that the fact they are small make them more likely to
> penetrate the body, be retained by the tissues, and go into the blood. And
> paradoxically, they are potentially more toxic than bigger particles,
> precisely because they are small. The active substances are at their
> surface, so it is the surface, not the mass, that counts in the toxicity.
>
>
>
> I read also that their effect on health is not well-known, but potentially
> toxic.
>
> https://en.wikipedia.org/wiki/Ultrafine_particle
>
>
>
> So again, more science on the question is necessary, but I would
> understand if measures are taken now to prevent emissions of ultrafine
> particles, as well as exposure.
>
>
>
> Best,
>
>
>
> Xavier
>
>
>
>
>
>
>
> *De :* Stoves [mailto:stoves-bounces at lists.bioenergylists.org
> <stoves-bounces at lists.bioenergylists.org>] *De la part de*
> plloyd at mweb.co.za
> *Envoyé :* mercredi 9 mai 2018 20:00
> *À :* Discussion of biomass cooking stoves
> *Objet :* [Stoves] ***SPAM*** Re: ***SPAM*** RE: Stoves Digest, Vol 93,
> Issue 5
>
>
>
> Confirm. Around 0.4 microns, retention in the lungs is very low, not
> really measurable. Philip
>
> Sent from my Huawei Mobile
>
>
>
> -------- Original Message --------
> Subject: [Stoves] ***SPAM*** RE: Stoves Digest, Vol 93, Issue 5
> From: Crispin Pemberton-Pigott
> To: Discussion of biomass cooking stoves
> CC:
>
> Dear Norbert
>
>
>
> I defer to Profs Harold Annegarn and Philip Lloyd on this matter of
> inhalation, but I understand from them that below a certain aerodynamic
> diameter, particles are too small to be impacted and stick in the lungs,
> and only enter the body by diffusion, like gases. Small particles are
> inhaled and exhaled again.
>
>
>
> Regards
>
> Crispin
>
>
>
>
> ------------------------------
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