Orthogonal Design Study on Factors Affecting the Determination of Common Odors in Water Samples by Headspace Solid-Phase Microextraction Coupled to GC/MS

Table 6

The comparison of the signal to noise ratio (S/N) by two methods.

Compounds	Quantitative ion	Concentration (ng L^−1)	S/N1^a	S/N2^b	(S/N1)/(S/N2)
IBMP	124	10	6899	1731	3.98
2-MIB	107	10	2046	906	2.26
GSM	112	10	737	144	6.46

aS/N₁ was obtained by not using segments in SIM mode. ^bS/N₂ was obtained by the MS scan function in SIM mode.