nitrates in water
6 October 2017 / Leave a comment / WATER
nitrates in water Concentrations of nitrates in water of rain of up to 5 mg/l have been observed in industrial areas . In rural areas, concentrations are somewhat lower. The nitrate concentration in surface water is normally low (0–18 mg/l) but can reach high levels as a result of agricultural runoff, refuse dump runoff or […]