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. Author manuscript; available in PMC: 2009 Jan 6.
Published in final edited form as: J AOAC Int. 2007;90(4):925–933.

Table 2.

Confirmation results

LC/MS ion trap
Tablets 10 μg/g low fortification with Aristolochia spp., root
H1

H2
H1

H2
Laboratory ID Ion 251/268, % Ion 252/268, %
C 3.35 4.23 45.6 38.4
D 21.3 28.3 34.3 35.3
G 2 2 30 40
H 23 8.2 12 4.2
I
13.6

16.4
31.4

45.6
Standard


Ion 251/268, %


Ion 252/268, %

C 2.63 39.7
D 23.6 34.3
G 2 33
H 18 4.4
I

16.9


38.8

LC/MS triple quad
Tablets 10 μg/g low fortification with Aristolochia spp., root
H1

H2
H1

H2


Ion 281/296, %


Ion 265/296, %

A 49.3 40.5 31.9 33.2
B 25.8 25.1 17.5 16.3
E
31.9

32.5
33.3

33.0
Standard


Ion 281/296, %


Ion 265/296, %

A 43.8 34.2
B 25.4 18.3
E 31.2 32.8