TABLE 4.

Weekly geometric mean emissions of VOCs during 10 to 12 weeks of incubation of contaminated building materials at three or four different RH levels and corresponding emissions from sterile building materials, as determined by GC-MS and HPLC

VOCa	Weekly geometric mean yield (ng/liter)
	Gypsum board, wallpaper, and plastic film			Chipboard and glass wool			Ceramic tile
	Contaminated (n = 12)	Sterile (n = 12)	Pb	Contaminated (n = 12)	Sterile (n = 12)	Pb	Contaminated (n = 10)	Sterile (n = 10)	Pb
3-Methyl-1-butanol	ND–3c	ND	∗	ND–35	ND	†	ND–10	ND–8	†
1-Hexanol	ND–24	ND–9	†	ND–470	ND–8	†	ND–78	ND	∗∗
Limonene	10–44	7–44	∗∗	54–550	54–940	†	8–41	7–65	†
Acetone	18–520	19–490	∗	ND–8,100	190–9,100	†	17–290	ND–300	†
Butanone	ND–500	ND–160	†	ND–940	ND–920	†	ND–310	ND–230	∗∗
2-Pentanone	ND–30	ND–110	†	ND–1,700	ND–530	†	ND–220	ND–160	∗
3-Methyl-2-pentanone	ND–50	ND–49	†	ND–300	ND–370	†	ND–95	ND–71	∗
2-Hexanone	ND–31	ND–280	†	ND–460	ND–620	†	ND–290	ND–99	∗
3-Octanone	ND–15	ND–22	†	ND–40	ND–27	∗	ND–17	ND–14	†

^aOnly those VOCs regarded as MVOCs with at least one building material are included. 

^bStatistical significance as determined by the Wilcoxon test. †, the yield from the contaminated construction material was not statistically significantly higher than the yield from the sterile construction material; ∗, 0.01 ≤ P ≤ 0.05; ∗∗, P < 0.01. 

^cND, not detected.