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. Author manuscript; available in PMC: 2011 Jun 29.
Published in final edited form as: Environ Sci Technol. 2011 Mar 17;45(8):3768–3773. doi: 10.1021/es1040688

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 Leachatea

(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
a

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