Table 5.

Total number of tentatively identified derivatized aromatic amines with each technique, in urine samples from three NS = non-smokers and four S = smokers. All peaks found were taken into account for the GC-NCI-MS and GC-EI-MS/MS techniques, and only peaks with a loss of 127 were included in the GC-EI-MS calculations

	NS1	NS2	NS3	S1	S2	S3	S4
GC-EI-MS	37	39	38	41	41	42	45
GC-NCI-MS	55	55	49	61	79	74	68
GC-EI-MS/MS	13	15	14	16	16	16	16