Sediment Initial pH of water Water column Interface water/sediment Sediment (middle part)
Kaolinite + A.s. 7.8 7.76 7.04, 7.13* 6.05
Kaolinite control 7.8 7.5 7.7 7.9
Art. SiO2 + A.s. 7.8 8.20-8.25 8.35-8.44 7.78-7.80
Art. SiO2 control 7.8 7.71-7.81 8.6 7.70-7.76
Clinochlore + A.s. 7.8 8.7 8.80-8.92 8.17-8.22
Clinochlore control 7.4-7.8 7.1-7.4 6.22-6.45 5.9-7.3
Chamosite + A.s. 7.8 8.48 7.00-7.04 6.83-6.91
Chamosite control 7.8 8.05-8.07 7.4 7.09-7.11
Montmorillonite + A.s. 7.0 9.63-9.70** 9.77-10.1*** 10.9-11.0****