Attenuation

{
  "id": "MLC-T-ENV-002382",
  "term": "Attenuation",
  "field": "Environment",
  "definition": "1. The process by which a compound is reduced in concentration over time, through absorption, adsorption, degradation, dilution, and/or transformation. an also be the decrease with distance of sight caused by attenuation of light by particulate pollution.\n\n2. The process by which a compound is reduced in concentration over time, through absorption, adsorption, degradation, dilution, and/or transformation. Can also be the decrease with distance of sight caused by attenuation of light by particulate pollution.\n\n3. The process by which forests reduce the amount of pollutants in the air.\n\n4. The reduction or lessening in amount (e.g., a reduction in the amount of contaminants in a plume as it migrates away from the source).\n\n5. The reduction or lessening in amount\n\n6. Weakening (dilution) of the concentration, as of an antigen in a vaccine. [MERREA 2005]\n\n7. For water velocity: the slowing, modification, or diversion of the flow of water as with detention and retention ponds. For water, quality: the process of diminishing contaminant concentrations in water because of filtration, biodegradation, dilution, sorption, volatilization, and other processes.",
  "subject": "Water",
  "references": [
    "RCRA Glossary of Terms",
    "Terms of Environment; EPA 2005b",
    "Chesapeake Bay Glossary",
    "Glossary of Technical Terms: Office of Underground Storage Tanks",
    "EPA EV-Natural Environments-Natural Phenomena",
    "Thesaurus of Terms Used in Microbial Risk Assessment",
    "Federal Land Management in the Chesapeake Bay Watershed Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/attenuation/"
}