Steve Slatin on wed 23 jun 04
Phil --
Tried a similar approach many years ago to trap particulates in order to
weigh/evaluate them. Took 'samples' at various locations, bubbled them
through distilled water and boiled off the water to leave a sample of
suspected pollutants. My results were so wacky I concluded that the
particles were traveling through the bubbler part of the apparatus
almost unaffected.
My conclusion my have been wrong, but in retrospect it makes sense.
Pollutant particles (including airborne silica) are incredibly tiny. The
gap between fibers in a fabric, even a finely woven fabric, are huge by
comparison.
If you ever used one of those wet/dry shop vacs with a fabric catch bag
over the air intake, you see it gets lots of sludge on the INSIDE of the
bag (from the intake before it goes through the fabric). Not much at
all on the OUTSIDE of the bag (where the dust is first exposed to
moisture. If the bubbles weren't carrying it away, you'd expect lots of
buildup there.
Like you, I like the idea. I don't think it works too well, though.
-- Steve Slatin -- Entry-level potter, journeyman loafer, master obfuscator
No website, no sales room, no scheduled hours
All talk, no action
Sequim, Washington, USA
48.0937°N, 123.1465°W or thereabouts
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