Table 6 Inter-elemental correlation of heavy metals in samples of waste water and soils that were significant or nearly significant.

From: Levels of heavy metals in wastewater and soil samples from open drainage channels in Nairobi, Kenya: community health implication

Pairs correlated

Correlation co-efficient (r - value)

P value

Cd (soila) & Hg (soil)

0.839

0.009**

Tl (waste water) & Cd (soil)

0.967

0.000**

Tl (waste water) & Cd (waste water)

0.631

0.069

Tl (soil) & Cr (waste water)

−0.641

0.087

Tl (soil) & Cd (soil)

0.672

0.068

  1. aType of sample analyzed is placed in brackets; *correlation significance at 0.05 level (2 tailed); **correlation significance at 0.01 level (2 tailed).
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