Selenate is a chemical compound that contains selenium in its oxidized form, specifically as the anion SeO4^2-. It is commonly found in nature, particularly in certain minerals and soils. Selenate is an important nutrient for some organisms, including plants, which can absorb it and utilize it for various biological processes. In environmental contexts, selenate can be a concern due to its potential toxicity at high concentrations. It can enter water systems through agricultural runoff or industrial discharges, affecting aquatic life. Monitoring and managing selenate levels is crucial to prevent ecological harm and ensure safe water quality.