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Table 2 Heavy metal pollution index (HPI) and metal index (MI) in freshwater of Rosetta branch

From: Toxicity assessment of heavy metals and organochlorine pesticides in freshwater and marine environments, Rosetta area, Egypt using multiple approaches

Metal

Vi

Si [26]

Wi

Qi

Wi × Qi

MI

Cr

7.29

50

0.02

14.58

0.29

0.15

Ni

24.46

20

0.05

122.3

6.12

1.22

Co

10.23

10

0.1

102.3

10.23

1.02

  

∑ Wi = 0.17

∑ Wi × Qi = 16.64

   

HPI = 98

 

MI = 2.4

  1. Where Vi: the value of the metal, Si: standard value, Wi; Weightage value and Qi: quality rating
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Sustainable Environment Research

ISSN: 2468-2039

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