Skip to main content
Bulletin of the National Research Centre

Table 3 Classification of contamination factor

From: Effect of urbanization on heavy metal contamination: a study on major townships of Kannur District in Kerala, India

Contamination factor

Contamination level

CF < 1

Low contamination

1 ≤ CF < 3

Moderate contamination

3 ≤ CF < 6

Considerable contamination

CF > 6

Very high contamination

  1. Vineethkumar et al. (2020) and Sheela et al. (2012)
Back to article page