Quantitative relationship between the octanol/water partition coefficient and the diffusion limitation of the exchange between adipose and blood

Table 1 Summary of the experimental data and the model analysis.

Reference	Solute	log K_ow (ref)	F_A (kg/min/kg)	K_ad-bld	Comments
Oberg [16]	PCB 2,4,4'	5.67 [25]	0.15	314	Simultaneous chemical measurements
	PCB 2,2',5,5'	5.84 [25]	0.05	89
	PCB 3,3',4,4'	6.36 [25]	0.08	136
	PCB 2,2',3,4,5'	6.29 [25]	0.08	136
	PCB 2,2',4,5,5'	6.38 [25]	0.035	132
	PCB 2,3,3',4,4'	6.65 [25]	0.04	263
	PCB 2,3',4,4',5	6.74 [25]	0.03	226
	PCB 2,2',3,4,4',5	6.83 [25]	0.012	226
	PCB 2,2',4,4',5'	6.92 [25]	0.013	226
	PCB 2,3,3',4,4',5	7.18 [25]	0.015	292
	PCB 2,3,3',4,4',5'	7.18 [25]	0.012	263
	PCB 2,2',3,3,4,4',5	7.27 [25]	0.007	263
	PCB 2,2',3,4,4',5,5'	7.36 [25]	0.005	263
Muhlebach [23]	PCB 2,2',4,4',5,5'	6.92 [25]	0.02	319	¹⁴C, Chemical, not metabolized
Ebling [36]	Thiopental	2.85 [37]	0.18	6.5	Chemical
Dallas [38]	Perchloroethylene	3.13 [39]	0.25	124	Chemical
Parham [40]	Dichlorodiphenylsulfone	3.9 (est)	0.12	89	¹⁴C, low metabolite
Yamaguchi [41]	Hexachlorobenzene	5.46 [42]	0.12	80	Chemical measurements
	Hexabromobenzene	6.07 [43]	0.03	27
Wang [5]	TCDD 2,3,7,8	5.95 [44]	0.02	80	³H, low metabolite
Kedderis [35]	TBDD 2,3,7,8	6.5 [44]	0.0024	89	³H, low metabolite
Komsta [45]	PCDE 2,2',4,4',5	6.38 [46]	0.015	40	Chemical

For each solute that was modeled, the value of the experimental octanol/water partition coefficient (log K_ow) and the model values of the "apparent" rat adipose perfusion rate (F_A) and adipose/blood partition coefficient (K_ad-bld) are listed. The last column describes the experimental details of the measurements. For "chemical" measurements, the parent solute was directly measured. Tracer (¹⁴C, ³H) measurements of the total (parent and metabolite) concentration were used only if there was independent evidence that the metabolite concentration was negligible.