Comprehensive Investigation of Nitrate Concentration in Iranian Bottled Water Using ion Chromatography

In recent years, consumption of bottled water has increased in many countries, including Iran. Bottled waters sometimes can be contaminated by chemical agents such as nitrate which cause healthy effects on consumers. So, quality monitoring of such waters has great importance. The aim of this study was evaluation of nitrate concentration in existing bottled waters in Iran.
This descriptive cross- sectional study was performed to determine nitrate in Iranian bottled water in 2014. 71 water sample brands were collected from different geographical regions and were examined by Ion chromatography (IC).
Obtained results showed that nitrate concentration in all examined water samples ranged from 0.15 to 50.1 mg/L and average of nitrate concentration was 10.55±9.9 mg/L. Also, in most brands, results of examination concentration were higher than concentration of nitrate on labels.
In all exanimated brands, nitrate concentrations were incompliance with WHOand Iranian standards. 70 brands were lower than USEPA, FDA, and IBWA standards.