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Bulletin of the National Research Centre

Table 3 Classification of contamination factor

From: Estimation of pollution indices and hazard evaluation from trace elements concentration in coastal sediments of Kerala, Southwest Coast of 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. Rudnick and Gao (2003), Salah et al. (2012)
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