Table 3.

Results of the LC/APCI-MS/MS analysis of aldehydes (nM) produced by lipid peroxidation of membranes in breath condensate of healthy nonsmoking subjects and asymptomatic smokers, and determined as DNPH derivatives

	Healthy (n = 12)		Smokers (n = 13)
	Median	Range	Median	Range
MDA	11.2	1.07–23.4	34.7*	16.4–56.9
Acrolein	2.33	1.39–3.95	6.78*	6.26–7.45
4-HHE	0.94	0.85–12.6	4.72	2.56–33.9
4-HNE	0.74	0.25–9.04	3.77	0.74–5.75
n-hexanal	41.9	8.34–87.3	68.6*	38.4–75.2
n-heptanal	29.9	7.93–46.8	30.8	14.9–39.5
n-nonanal	17.8	6.68–27.7	12.9	4.72–24.7

^*p < 0.05, vs. nonsmoking subjects.