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Table 5 The frequency of physical and chemical variables in water studies in Iranian environmental health journals (2008–2017)

From: A glance at one decade of water pollution research in Iranian environmental health journals

Variables

Types

Number*

Percentage

Physical properties of water

Temperature

58

13.4

Turbidity

57

13.2

Aesthetic (taste and odor)

2

0.46

Chemical properties of water

Acidity

44

10.2

Hardness

34

7.9

Electrical conductivity

21

4.8

Oxygen

8

1.8

Corrosive

2

0.46

  1. * Due to the two or multiple themes of some articles, each of the research topics is more than the full range of articles related to the physical and chemical properties of water