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Table 6 Inter-elemental correlation of heavy metal concentrations in samples of wastewater and filamentous green algae

From: Urban mosquitoes and filamentous green algae: their biomonitoring role in heavy metal pollution in open drainage channels in Nairobi industrial area, Kenya

Pairs correlated Correlation co-efficient (r value) P value
Pb (algaea) & Hg (algae) 0.957 0.043*
Pb (algae) & Pb (wastewater)  − 0.974 0.026*
Pb (wastewater) & Hg (algae)  − 0.921 0.079
Cd (algae) & Cr (algae) 0.985 0.015*
Cd (algae) & Hg (algae) 0.928 0.072
Tl (wastewater) & Cd (wastewater) 0.631 0.069
Tl (algae) & Hg (algae) 0.946 0.054
Tl (algae) & Cr (algae) 0.924 0.076
Tl (algae) & Cd (algae) 0.939 0.061
  1. *Correlation significance at 0.05 level (2 tailed)
  2. aType of sample analyzed is placed in brackets