Table 2. Log K_Hxd/w Values Measured in This Study and Log K_aw Derived from Eq 1.

	log KHxd/w						log Kaw
	batch partition methoda		shared-headspace methoda		modified VPR-HS method		eq 1	VPR-HS or VP/S
	mean	95% CI	mean	95% CI	mean	95% CI
3:1 FTOH	NA		NA		–0.35	[−0.37, −0.32]	–1.89	–2.03d
3:3 FTOH	0.52	[0.51, 0.54]	NA		0.32	[0.17, 0.47]	–2.17	–2.04d
4:2 FTOH	0.79	[0.77, 0.81]	NA		0.75	[0.70, 0.80]	–1.57	–1.56d, −1.30e, −1.63f, −1.21g, −1.52h
4:4 FTOH	1.60	[1.58, 1.62]	NA		1.43	[1.09, 1.71]	–1.97	–1.28d
6:2 FTOH	2.50	[2.42, 2.59]	2.51	[2.44, 2.58]	NA		–0.64	–1.47e, −0.56f, 0.37g, −0.44h
7:1 FTOH	NA		2.70	[2.56, 2.84]	NA		–0.26
8:2 FTOH	NA		3.75	[3.73, 3.78]	NA		0.11	–1.82e, 0.58f, 0.31g, 0.96h
5:2s FTOH	2.00	[1.93, 2.08]	2.04	[1.98, 2.11]	1.55	[1.18, 1.75]	–0.15
4:2 FTI	4.13b	[3.89, 4.36]	4.93	[4.86, 4.99]	NA		1.60
6:1 FTI	4.34b	[3.82, 4.86]	5.66	[5.36, 5.95]	NA		2.28
6:1 FTI-7H	4.06b	[3.72, 4.39]	4.62	[4.55, 4.70]	NA		0.70
6:2 FTAC	4.22b	[3.92, 4.51]	5.43	[5.40, 5.46]	NA		1.27
4:2 FTMAC	4.02b	[3.82, 4.21]	4.65	[4.58, 4.72]	NA		0.62	–0.14d
PFBSA	–1.15c	[−1.20, −1.10]	NA		NA		–4.89
PFHxSA	0.39c	[0.28, 0.51]	NA		NA		–3.94
PFOSA	1.80c	[1.72, 1.87]	NA		NA		–3.04
MeFBSA	0.82c	[0.80, 0.85]	NA		NA		–2.85
MeFHxSA	2.25c	[2.16, 2.34]	NA		NA		–2.01
EtFHxSA	2.95c	[2.85, 3.04]	NA		NA		–1.58
MeFBSE	0.49	[0.45, 0.52]	NA		NA		–4.35
EtFHxSE	2.76	[2.66, 2.87]	NA		NA		–3.02

^an = 5. T = 25 °C unless otherwise noted.

^bLikely inaccurate because of the presence of hexadecane in water.

^c1 mM HCl was used.

^dMeasured by the VPR-HS method in this study.

^eRef (7).

^fRef (8).

^gRef (9).

^hRef (12), 23 or 24 °C. CI, confidence interval. NA, not available. Underlined values were used for eq 1.