Skip to main content

Table 2 Variables studied about water in specialised environmental health journals (2008–2017)

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

Variables Levels
Water-related articles by journals Number / percent
Water-related articles by year of publication Number / percent
Sources of water 1- Surface 2- Groundwater
Types of pollutants by origin 1- Primary pollutants 2- Secondary pollutants
Physical variables Classification by type
Microbial agents Classification by type
Heavy metals Classification by type
Chemical pollutants Classification by type
Collaboration of researchers by country Name of countries
Collaborative research by continent Name of continent