DNAPL (Dense Non-Aqueous Phase Liquid)

DNAPLs (Dense Non-Aqueous Phase Liquids) are liquids that are denser than water and do not dissolve easily in it. Common examples include chlorinated solvents and certain petroleum products. When spilled or leaked into the ground, DNAPLs tend to sink below groundwater, forming pools or blobs that slowly migrate through soil and rock. They are challenging to clean up because they can persist underground for long periods, contaminating water supplies and the environment. Understanding DNAPLs is important for environmental remediation, as specialized techniques are often needed to locate and remove these stubborn pollutants effectively.