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

Table 2

Recoveries using different amounts of PSA and GCB (%).

Compound	0.4 g PSA + 0.1 g GCB	0.6 g PSA + 0.1 g GCB	0.6 g PSA + 0.2 g GCB	0.8 g PSA + 0.2 g GCB	0.6 g PSA + 0.3 g GCB	0.8 g PSA + 0.3 g GCB
Salicylic acid	82.2	84.6	86.1	83.9	69.7	73.2
Jasmonic acid	85.7	83.8	88.4	81.7	72.5	68.5
Methyl salicylate	97.8	94.5	98.8	94.2	88.4	85.5
Methyl jasmonate	99.2	98.6	99.7	98.6	85.8	87.9