Table 4 Soil chemical composition.

From: Cyclic drying and wetting tests on combined remediation of chromium-contaminated soil by calcium polysulfide, synthetic zeolite and cement

Items

pH

Organic matter/g/kg

CEC/cmol/kg

Al2O3/%

Fe2O3/%

MgO/%

CaO/%

Na2O/%

K2O/%

P2O5/%

SiO2/%

Silty clay

7.9

65.6

20.9

31.1

1.7

1.0

1.6

3.7

1.2

0.4

53.2

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