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

Table 4

The concentration of the five odors detected in waterworks from Wuxi city (all samples were test two times).

Compounds	Waterworks A^e (ng L^−1)			Waterworks B (ng L^−1)			Waterworks C (ng L^−1)
	A1^a	A2^b	A3^c	B1^a	B2^b	B3^c	C1^a	C2^b	C3^c
DMTS	37.5	27.8	30.9	22.4	38.7	51.6	250.3	—	30.7
2-MIB	298.2^d	9.8	4.0	104.6	3.9	5.9	1.6	4.2	1.1
β-Cyclocitral	338.8^d	68.6	6.4	120.4	12.2	0.9	n.d.	n.d.	n.d.
GSM	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.
β-Ionone	112.9	n.d.	n.d.	98.2	n.d.	n.d.	n.d.	n.d.	n.d.

^{a, b, c}Represent source water, product water, and tap water, respectively.
^dThe samples above the upper-limit of the calibration range were diluted twice before the further test.
^eWaterworks A is located at Taihu Lake, Wuxi city.