Effect of wood smoke exposure on vascular function and thrombus formation in healthy fire fighters

Table 1 Characterization of wood smoke exposure and particulate matter

	n	Unit	Mean	SD	Min	Max
PM ₁ mass concentration (TEOM)	16	μg/m³	1,115	151	922	1,561
PM ₁ mass concentration (filter)	16	μg/m³	899	100	726	1,105
Carbon monoxide	16	ppm	16	6	8	25
Nitrogen oxides	16	ppm	0.6	0.3	0.3	1.0
Elemental carbon/total carbon ¹	6	ratio	0.80	0.02	0.79	0.83
Organic fraction of total PM ^1,2	6	%	23.1	4.7	16.9	28.8
Soot fraction of total PM ¹	6	%	60.1	15.7	39.9	78.8
PAH – PM associated (filter) ^1,3	6	μg/m³	3.9	2.3	1.5	6.7
PAH – semi-volatile (PUF) ^1,3	6	μg/m³	0.4	0.3	0.1	0.9

¹OC-EC and PAH analysis from selected samples throughout the campaign (n = 6).
²Estimated based on the OC-EC analysis (assuming a factor of 1.8 used to covert OC to total organic PM and a factor of 1.1 used to convert EC to total soot PM).
³Includes the PAHs: phenanthrene, anthracene, 4H-cyclopenta[def]phenanthrene, 2-phenylnaphthalene, fluoranthene, pyrene, 1-methylfluoranthene, benz[a]fluorene, benz[b]fluorene, 2-methylpyrene, 4-methylpyrene, 1-methylpyrene, benzo[c]phenanthrene, benzo[ghi]fluoranthene, benzo[b]naphtho[1,2-d]thiophene, benz[a]anthracene, chrysene, 3-methylchrysene, 2-methylchrysene, 6-methylchrysene, 1-methylchrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[e]pyrene, benzo[a]pyrene, perylene, indeno[1,2,3-cd]fluoranthene, indeno[1,2,3-cd]pyrene, dibenz[a,h]anthracene, picene, benzo[ghi]perylene, dibenzo[a,l]pyrene, dibenzo[a,e]pyrene, coronene, dibenzo[a,i]pyrene and dibenzo[a,h]pyrene.

ISSN: 1743-8977