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

[Xavier Brandao]

Dear Philip,

 

OK, thanks for the precisions.

But don’t the recent studies found, or suspect, that below a certain size, like below 0.1µ, retention increases since the nanoparticles cross the cell membranes?

Not sure I understood right.

 

Best,

 

Xavier

 

 

De : Stoves [mailto:stoves-bounces at lists.bioenergylists.org] De la part de plloyd at mweb.co.za
Envoyé : mardi 22 mai 2018 09:01
À : Discussion of biomass cooking stoves
Objet : Re: [Stoves] ***SPAM*** Re: ***SPAM*** RE: Stoves Digest, Vol 93, Issue 5

 

We measured retention of silica dust as a function of particle size. The human filter scavenged everything above 10 micron very well. Between 10 & 2.5 there was degradation and increasing quantities were retained. Below 2.5 down to about 0.8 retention increased. Below about 0.6retention dropped rapidly ,and was effectively nil from 0.3.
This was publshed back in about 1974, research by the gold mining industry in Johannesburg.
Philip

Sent from my Huawei Mobile





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