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Table 1 pH of Point of Zero Charge and BET specific surface area of tested minerals.

From: Influence of soil minerals on chromium(VI) reduction by sulfide under anoxic conditions

Minerals

pHPZC

SSA(m2/g)

Aluminum oxide

8.9a

90.1a

Silicon oxide

2.3a

90.0a

Titanium oxide

6.5c

40.5a

Montmorillonite

5.9d

99.0d

Kaolinite

4.5–5.0b

22.4b

Illite

3.5b

24.0b

  1. Sources: a – Degussa (1991); b – this work; c – Torrents and Stone (1991); d – Buerge and Hug (1999)