Comment: |
no protolysis constants, SSD, SSA; diagenetic Fe oxyhydroxide isolated in situ by vertically inserting inert collectors into the sediment of Clearwater Lake located near Sudbury, Ontario; predominantly ferrihydrite (75%); 25% lepidocrocite; C(org)/Fe molar ratio 1.3/-0.5 (humic acid, fulvic acid); traces of Cd, Cu, Ni, Pb, Zn; overlying water with 137+/-19 µM Ca, 57+/-5 µM Mg, 94+/-7 µM Na, 15+/-4 mM K, 4.5+0.5 MM Mn, 175+/-10 µM SO4, 267+/-7 µM Cl, C(org) 3.4+/-1.4 mg C/l |