Soil Remediation Practices for Hydrocarbon and Heavy Metal Reclamation in Mining Polluted Soils

Table 3

Differences in TPHs, Pb, As, and Cd concentration levels in wet and dry season.

Parameter (mg/kg)	March	April	July	August
TPHs	18701±651	19624±706.611	23139±521	24196±459
Pb	143.9±19.6	161.6±7.06	182.6±3.4	195.5±2.3
As	1.48±0.29	1.58±0.445	3.36±0.851	3.90±0.60
Cd	3.6±0.57	4.0±0.58	4.4±0.33	5.7±0.33

Different superscripts indicate significant difference (p < 0.05). Similar superscripts indicate no significant difference (p > 0.05) in the same rows. SE: standard error.