Table 1.

Effect of treatment on estimated RBA for Pb in two soils^*

Soil	Treatment	Bone			Blood			Point
		Mean	LCL	UCL	Mean	LCL	UCL	Mean	LCL	UCL
1	U	0.545	0.461	0.655	0.750	0.374	1.190	0.648	0.513	0.781
	T 8 h	0.056	0.007	0.111	0.027	0.014	0.041	0.042	0.018	0.066
	% Decrease	89.7			96.4			93.5
	T 67 h	0.034	−0.008	0.081	0.012	0.009	0.016	0.023	0.003	0.043
	% Decrease	93.8			98.4			96.5
2	U	0.456	0.341	0.602	0.524	0.456	0.609	0.490	0.422	0.560
	T 8 h	0.032	0.028	0.039	0.058	0.041	0.079	0.045	0.036	0.054
	% Decrease	93.0			88.9			90.8
	T 67 h	0.041	0.002	0.084	0.017	0.011	0.024	0.029	0.010	0.048
	% Decrease	91.0			96.8			94.1

^*Mean RBA estimates with lower (LCL) and upper (UCL) 95% confidence intervals based on bone or blood tissue data. RBA point estimates are means of tissue-derived RBA estimates.