Effectiveness of Liquid-Liquid Extraction, Solid Phase Extraction, and Headspace Technique for Determination of Some Volatile Water-Soluble Compounds of Rose Aromatic Water

Table 4

Intraday and interday precisions for GCMS.

Compounds	Precision (RSD, %)			Precision (RSD, %)
	Intraday (mg/L)			Interday (mg/L)
	2.50	5.00	10.00	2.50	5.00	10.00
-Pinene	2.48 (0.12)	5.11 (0.10)	9.98 (0.10)	2.45 (0.15)	4.98 (0.14)	9.95 (0.13)
Linalool	2.52 (0.15)	5.05 (0.15)	10.08 (0.14)	2.51 (0.17)	4.99 (0.16)	9.98 (0.16)
-Caryophyllene	2.45 (0.13)	5.01 (0.13)	9.95 (0.15)	2.43 (0.17)	4.98 (0.17)	9.96 (0.16)
-Humulene	2.43 (0.15)	5.05 (0.15)	9.98 (0.13)	2.42 (0.18)	4.96 (0.16)	9.94 (0.16)
Citronellol	2.52 (0.11)	5.03 (0.10)	10.02 (0.13)	2.49 (0.18)	4.98 (0.18)	9.95 (0.18)
Nerol	2.48 (0.15)	4.95 (0.14)	9.95 (0.15)	2.44 (0.18)	4.95 (0.18)	9.93 (0.17)
Geraniol	2.47 (0.13)	5.02 (0.14)	9.95 (0.13)	2.48 (0.15)	4.98 (0.15)	9.95 (0.15)
PEA	2.51 (0.14)	5.05 (0.13)	10.02 (0.12)	2.53 (0.17)	4.97 (0.16)	9.97 (0.17)
Methyl eugenol	2.46 (0.20)	4.96 (0.19)	9.98 (0.20)	2.48 (0.22)	4.96 (0.20)	9.95 (0.20)
Eugenol	2.49 (0.23)	5.11 (0.20)	10.08 (0.21)	2.45 (0.24)	5.05 (0.22)	9.99 (0.23)