Table 2.

Chemical Analyses of Aqueous Clay Leachates, (A) ICP-MS Analyses of the Antibacterial ARG Clay³, the OMT (This Study) and NAB Clay Leachate²¹, (B) Ion Chromatography Analysis of Anions in the OMT Leachate^a

(A)	ARG	ARG	OMT	OMT	NAB	NAB
element	µg/L	µM	µg/L	µM	µg/L	µM
Mg	620	26	20 900	860	93 000	3826
Al	5040	187	23 900	886	13 400	497
Si	7400	264	1430	51	na	na
P	446	14	96	3	7.3	0.24
K	7700	197	210	5	na	na
Ca	3500	87	2×105	4341	88 000	2196
V	21.5	0.42	3.3	0.06	1.1	0.02
Cr	1.3	0.03	16	0.30	na	na
Mn	55	1.0	5170	94	4300	78
Fe	280	5.0	51 600	924	10 500	188
Co	0.1	0.002	204	3	102	1.73
Ni	4.4	0.07	169	3	60	1.02
Cu	2.7	0.04	225	4	63	0.99
Zn	5.0	0.08	1090	17	66	1.01
As	260	3.47	1.1	0.01	0.4	0.01
Se	1.5	0.02	2.3	0.03	0.3	0.00
Rb	18	0.21	0.18	0.00	7.1	0.08
Sr	58	0.66	338	4	186	2.12
Ba	31	0.23	5.5	0.04	11	0.08
Pb	0.26	0.001	0.02	0.0001	0.08	0.0004
pH	10		4		8

(B)	OMT leachate anions
	Cl−	NO2−	NO3−	Br−	SO42−	PO43−
ppm	0.88	nd	nd	nd	2065	6.6
%rsd	1.4				0.06	4.9

^ana = not analyzed; nd = none detected; %rsd = % relative std. dev. of three analyses.