Reostusnäitajad

Reostusnäitajad are indicators used to measure and assess the level of pollution in the environment. These indicators can relate to various aspects of environmental quality, including air, water, and soil. In the context of air pollution, reostusnäitajad might include concentrations of specific pollutants like particulate matter (PM2.5 and PM10), nitrogen oxides (NOx), sulfur dioxide (SO2), ozone (O3), and carbon monoxide (CO). These are typically measured in micrograms per cubic meter or parts per billion. For water quality, reostusnäitajad can encompass parameters such as dissolved oxygen levels, biochemical oxygen demand (BOD), chemical oxygen demand (COD), pH, turbidity, the presence of heavy metals (like lead, mercury, and cadmium), and nutrient levels (nitrogen and phosphorus). These are often measured in milligrams per liter or as dimensionless quantities. Soil pollution indicators might include heavy metal contamination, pesticide residues, and the presence of other hazardous chemicals. The specific reostusnäitajad used and their acceptable thresholds are often defined by national and international environmental regulations and standards. Monitoring these indicators is crucial for understanding the extent of environmental degradation, identifying pollution sources, and evaluating the effectiveness of pollution control measures. They serve as a basis for environmental policy development and public health risk assessment.