. Author manuscript; available in PMC: 2014 Feb 1.

Published in final edited form as: J Contam Hydrol. 2012 Dec 22;145:10.1016/j.jconhyd.2012.12.004. doi: 10.1016/j.jconhyd.2012.12.004

Table 2.

Summary of Properties for Compounds Used^a

Compound	C₀^b		K_D^c (mL·g⁻¹)	K_H^d (−)	K_IA^h (cm⁻¹)	Compound Function
Compound	(ppmv)	(µg·L⁻¹) at STP	K_D^c (mL·g⁻¹)	K_H^d (−)	K_IA^h (cm⁻¹)	Compound Function
SF₆	50	215	-	70^e	-	non-reactive tracer
Helium	1.1·10⁶	180 635	-	-	-	non-reactive tracer
TCE	26	137	0.014	0.4^f	2.64·10⁵	model VOC
Heptane	37	154	-	81.6^f	2.33·10⁵	interfacial-partitioning tracer
CFM	75	421	-	2.1^g	-	water-partitioning tracer

Temperature ~23 °C

C₀ is input concentration of tracer

K_D is the sorption coefficient; a dash signifies insignificant

K_H is Henry’s coefficient

[Wilson, 1995]

[Schwarzenbach, 1993]

Carlson, 2000]

K_IA is the air-water interfacial accumulation coefficient [Hoff, 1993]