Fading grid on green Commercial Building Ventilation and Indoor Environmental Quality
Table 16 Emission factors of terpene hydrocarbons and aldehydes for plywood subfloor alone, assemblies of subfloor, carpet cushions and carpet, and subfloor with two different barrier materials.
  Emission Factor (µg m-2 h-1)
    Assemblyb Assembly Assembly Subfloor Subfloor
  Plywood w/ Std. w/ Barrier w/ Barrier w/ Perf. w/ Fiber
Compound Subfloora Cushion Cushion A Cushion B Al Barrierc Barrierd
α-Pinene 34.2 ± 17.9 38 14.3e 23 18.2 20
β-Pinene 5.4 ± 3.0 8.5 <3 3.2 3.5 <3
d -Limonene 24.8 ± 22.4 23 9.2 9.4 16.7 33
Formaldehyde 8.6 ± 3.0 6.4 3.2 4.9 <3 <3
Acetaldehyde 2.6 ± 1.4 <3 <3 <3 <3 <3
Pentanal 40.0 ± 7.7 32 27 23 35 27
Hexanal 172 ± 16 165 105 116 135 126
2-Furaldehyde 3.6 ± 1.1 3.6 <3 <3 <3 <3
Heptanal 10.0 ± 0.9 8.9 5.5 6.0 6.4 7.1
2-Heptenal 4.2 ± 2.2 3.6 <3 <3 <3 <3
Benzaldehyde 3.4 ± 2.6 3.6 <3 <3 <3 <3
Octanal 23.6 ± 9.8 18.4 10.6 15.7 11.0 12.2
2-Octenal 14.0 ± 11.3 9.7 3.2 6.0 <3 <3
Nonanal 29.2 ± 17.7 18.3 8.2 16.1 10.1 10.9
a Mean ± 95% confidence interval for 5 replicate specimens

b Assemblies tested with subfloor, carpet cushion and carpet

c Perforated and reinforced aluminum foil radiant barrier

d Non-woven fiber, exterior weatherization membrane

e Significant reduction; values indicated in bold text are below 95% confidence intervals for plywood