Abstract
Comparison of the solute (nitrates) transport through two types of soil profiles using 1-D HYDRUS software
Highlights
Nitrates are naturally occurring ions featured in the natural nitrogen cycle
The present simulation study demonstrated the high impact of soil hydraulic properties on water and solute transport
We have shown about 50 times solute flow rate increasing for sandy soil compared to silty-loam in the first 40 cm layer of the soil profile
Summary
Composition creates support for crop growth in agriculture, which produce the main sources for human nutrition. Together with human consumption rate and growth, increased fertilization irrigation with domestic wastewater and changes in land-use patterns caused widespread pollution of drinking water sources by nitrates. Mobile ions pass through the soils and reach the aquifer (Balejčíková et al, 2020). This serious environmental problem still exists in many parts of the world. In Slovakia, the situation with nitrates level is stabilized thanks to applied legislation, there increased concentrations were measured by monitoring (Balejčíková et al, 2020). The main problem is associated with nitrates limits in relationship with organism and water sources used for drinking purposes. Higher-level over 50 mg l-1 and over 10 mg l-1 for infants (recommended by WHO and included in EU countries legislative) are linked with methaemoglobinaemia, the blue-baby syndrome development leading often to death (Greer and Shannon, 2005), and with the possible formation of n-nitroso compounds, potential carcinogens in the digestive tract
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