[Stoves] Off-topic Re: New PM2.5 health impact analysis

[Crispin Pemberton-Pigott]

Dear Norbert

Just for comparison, JICA contractors measured a sustained level of 30,000,000 micrograms per m3 in Ulaanbaatar apartment building chimneys. That was in about 2010. I think a lot of it was fly ash. Must have been – surely?

Wow
Crispin





Ron and Andrew:

I checked Andrew's alibaba link, and the specs state a range of 0 - 1000 micrograms PM/m3, ie., 1 mg/m3, which seems in the range of ambient air measurements. By comparison, a 1 g/kg PM flue gas measurement (fairly clean) would convert to around 85 mg/m3.
It looks similar to personal monitors that use the Sharp GP2Y1010Au optical dust sensor, which is described here at Adafruit:
https://www.sparkfun.com/products/9689<https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.sparkfun.com%2Fproducts%2F9689&data=02%7C01%7C%7Cf6c3477ad6be4b709bd808d6181518a4%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636722876210411138&sdata=VEbwuN8TvkrZiwu02xuPq1Ruai0NPd4dC876DFx4vf8%3D&reserved=0>

Data sheet is available here:
www.sparkfun.com/datasheets/Sensors/gp2y1010au_e.pdf<https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.sparkfun.com%2Fdatasheets%2FSensors%2Fgp2y1010au_e.pdf&data=02%7C01%7C%7Cf6c3477ad6be4b709bd808d6181518a4%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636722876210411138&sdata=lQjPouUHfbalaMJ4KQ%2BoahL9knrhoWs8B0INKMvKGSo%3D&reserved=0>

Norbert

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