. Author manuscript; available in PMC: 2007 Oct 16.

Published in final edited form as: Langmuir. 2007 Apr 7;23(10):5645–5650. doi: 10.1021/la063251f

Table 2.

Relative Sensitivity Factors (RSF) for Each of the Lipid Components in the One-, Two-, and Three-Component Lipid LB Films^a.

	CH	SM	POPC
sample composition	[M − OH]⁺ (m/z 369)	[C₁₇H₃₀ON]⁺ (m/z 264)	[C₈H₁₉NPO₄]⁺ (m/z 224)
Relative Sensitivity Factor (RSF)
cholesterol (CH)	0.72 ± 0.1
18:0 sphingomyelin (SM)		0.013 ± 0.001
POPC			0.11 ± 0.005
2:3 POPC/SM		0.026 ± 0.001	0.17 ± 0.01
4:3 POPC/CH	0.34 ± 0.002		0.13 ± 0.01
2:1 SM/CH	0.38 ± 0.005	0.23 ± 0.001
30:47:23 POPC/SM/CH	0.31 ± 0.003	0.021 ± 0.002	0.21 ± 0.02

All the calculations included at least three measurements of different areas in one or two samples.