Table 3.

Absolute and relative Apparent Permeability of metal(loid)s as measured by Caco-2 cell technique and percentage of metal(loid)s complexed.

Metal(loid) sources*	Chelating agents/Gut bacteria	Absolute App Permeability (× 10–6 cm/s)**	Relative App Permeability***	% Complexed metal(loid)s
As—No IE	Control	3.5600	100	10.2
As—with IE	Control	2.8907	81.2	40.4
	EDTA	2.5739	72.3	45.2
	DMPS	2.1542	60.5	48.1
	E. coli	2.6166	73.5	57.6
	L. acidophilus	2.2855	64.2	63.2
Cd—No IE	Control	0.8900	100	7.03
Cd—with IE	Control	0.7405	83.2	22.4
	EDTA	0.6728	75.6	35.3
	DMPS	0.5527	62.1	41.4
	E. coli	0.5367	60.3	65.4
	L. acidophilus	0.4931	55.4	68.7
Hg—No IE	Control	2.7500	100	8.01
Hg—with IE	Control	2.2055	80.2	22.2
	EDTA	1.9580	71.2	26.1
	DMPS	1.7078	62.1	24.3
	E. coli	1.9883	72.3	34.3
	L. acidophilus	1.7133	62.3	37.6
Pb—No IE	Control	0.1700	100	10.2
Pb—with IE	Control	0.1399	82.3	33.2
	EDTA	0.1229	72.3	36.4
	DMPS	0.1022	60.1	37.3
	E. coli	0.1059	62.3	63.3
	L. acidophilus	0.0904	53.2	65.6

*NO IE, No Intestinal Extract; with IE, with Intestinal Extract; **Absolute Apparent permeability is calculated from Eq. (1) (× 10^–6 cm/s); ***Relative Apparent permeability is calculated from Eq. (2); absolute permeability for metal(loid) alone (No IE) is taken as 100%

Ethylene diamine tetraacetic acid (EDTA) and 2,3-dimercapto-1-propanesulfonic acid (DMPS); Escherichia coli and Lactobacillus acidophilus.