Coliform Value Fluctuation Over the Years From 2014 - 2018
- Comment: + The value of Zn in surface water in Lang Son city in the period of 2014 - 2018 generally did not fluctuate much, fluctuating between 0.03 mg/l (phase 02/2014; phase 02/2015; phase 2/2017) - 0.35 mg/l (phase 1/2015). Particularly for phase 2 of 2018, because no monitoring of Zn ...