Table 5.

Maximum Capacity of Metal Uptake by SH-SAMMS As Predicted by the Langmuir Sorption Isotherm Model^a

metal	max capacity (mg/g)	matrixb
Hg	380	SGF
Cd	50	SIF
As	8.5	SGF
As	29	SIF, RT
As	28	SIF, 37 °C

^aAll fits with regression better that 0.99.

^bSGF (pH 1.11) contained 0.03 M NaCl, 0.085 M HCl, and 0.32% (w/v) pepsin; SIF contained 0.05 M KH₂PO₄. The pH was adjusted to 6.8 with 0.2 M NaOH.