Simultaneous Determination of Salicylic Acid, Jasmonic Acid, Methyl Salicylate, and Methyl Jasmonate from Ulmus pumila Leaves by GC-MS

Table 6

Recovery of four signal compounds from spiked samples at three concentrations.

Compounds	Added (μg⋅mg^−1)	Measured (μg⋅mg^−1)					Recovery (%)	Precision (RSD, %)
Salicylic acid	1.0	0.87	0.77	0.84	0.78	0.65	78.2	10.39
	5.0	4.85	4.32	4.08	4.10	4.89	89.0	9.15
	10.0	9.87	8.94	8.80	9.52	8.97	92.2	4.91
Jasmonic acid	1.0	0.88	0.74	0.68	0.69	0.70	73.8	11.05
	5.0	4.02	4.28	4.52	4.87	4.68	89.5	7.54
	10.0	9.89	8.97	9.21	9.35	8.62	92.1	5.04
Methyl salicylate	1.0	0.94	0.91	0.88	0.91	0.85	89.8	3.76
	5.0	4.91	4.57	4.87	4.98	4.08	93.6	7.68
	10.0	10.25	10.67	9.75	11.21	9.63	103.0	6.26
Methyl jasmonate	1.0	0.95	0.91	0.89	0.98	0.98	94.21	4.38
	5.0	4.85	4.96	4.89	4.91	5.12	98.92	2.14
	10.0	10.69	9.97	9.85	9.05	9.27	97.66	6.52