Table 17.

Confirmation by LC/triple quad-MS

		Response, area			Retention time. min			Confirmation method 1 ion/ion ratio, %		Confirmation method 2 ion/total ion area ratio, %
Identification	Replicate	Ion 296	Ion 281	Ion 265	Ion 296	Ion 281	Ion 265	Ion 281/296	Ion 265/296	Ion 296	Ion 281	Ion 265
0. 03878 μg/mL standard	1	539	214	123	11.4	11.5	11.4	40	23	62	24	14
	2	871	337	283	11.6	11.6	11.6	39	32	58	23	19
Mean								40	28	60	24	17
Akebia trifolata stem spiked at 2 μg/g	1	1048	279	228	11.6	11.6	11.4	27	22	67	18	15
	2	957	332	296	11.5	11.4	11.5	35	31	60	21	19
	3	1079	328	271	11.4	11.5	11.6	30	25	64	20	16
Mean								31	26	64	20	17