Analysis of Five Earthy-Musty Odorants in Environmental Water by HS-SPME/GC-MS

Table 3

The concentration and recovery of earthy and musty odors in water samples (all samples were tested two times).

Compounds	Tap water			Deionized water
	Concentration (ng L^−1)	Recovery (%)		Concentration (ng L^−1)	Recovery (%)
		20 ng L^−1	100 ng L^−1		20 ng L^−1	100 ng L^−1
DMTS	7.8	92.8	95.4	2.4	91.7	90.2
2-MIB	6.4	104.3	92.0	2.5	110.1	93.5
β-Cyclocitral	1.2	109.8	94.3	n.d.	112.3	107.9
GSM	1.5	90.8	99.7	n.d.	107.0	104.1
β-Ionone	n.d.^a	85.7	83.2	n.d.	86.2	88.3

^an.d. means below the lower-limit of the calibration range.