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Table 3 Grading of modified degree of contaminations

From: Monitoring of the changes in potential environmental risk of some heavy metals in water and sediments of Burullus Lake, Egypt

Modified degree of contamination (mDc )

According to [Kremling 1983]

mDC < 1.5

Nil to very low degree of contamination

1.5 < mDC < 2

Low degree of contamination

2 < mDC < 4

Moderate degree of contamination

4 < mDC < 8

High degree of contamination

8 < mdC < 16

Very high degree of contamination

mdC > 32

Ultra high degree of contamination

16 < mDC < 32

Extremely high degree of contamination