Table 2.

The average surface area of combustion-derived nanoparticles (μm²/cm³) by stove and fuel characteristics, and solid fuel burning.

Characteristic	Not during solid fuel burning		During solid fuel burning
	Mean	10th, 90th percentile	Mean	10th, 90th percentile
Stove type
Low stove	11.6	2.2, 25.0	110.1	10.0, 263.6
High stove	11.6	1.8, 26.4	58.6	8.8, 96.8
Portable stove	21.9	10.6, 37.8	507.2	59.5, 1112.4
Firepit and portable stove	25.9	5.6, 23.6	168.9	37.1, 340.6
Brick stove	n/a*	n/a*	269.1	139.9, 467.8
Firepit	2.6	1.6, 5.3	184.9	9.5, 435.7
Chimney Present?
Yes	11.6	2.0, 25.6	92.1	9.6, 221.9
No	19.9	2.1, 31.2	351.9	34.7, 796.6
Fuel type
Bituminous coal	12.2	1.8, 25.9	227.7	9.5, 634.8
Anthracite coal	n/a*	n/a*	171.4	34.3, 392.1
Beehive	25.9	5.6, 23.6	168.9	37.1, 340.6
Wood	19.4	10.2, 34.2	969.1	32.1, 2679.9
All homes	14.0	2.0, 26.2	228.1	13.8, 540.8

Notes:

^*Not applicable. Three homes burned anthracite coal for heating and cooking during entire sampling period. One home used a brick stove, one a portable stove, and one a high stove with a chimney.