Pesticide residue

A pesticide residue is a pesticide or its breakdown products remaining on or in food, water, soil, or organisms after use or environmental release.

Pesticide degradation: The chemical or biological transformation of pesticides into other substances over time. Degradation can reduce parent-pesticide residues while producing metabolites that also persist.
Maximum residue limit: A legally permitted upper concentration of a pesticide residue in or on a food or feed commodity. This regulatory threshold sets the residue limit for specified commodities.
Pesticide tolerance: A legally established maximum pesticide residue level for a food or feed commodity, especially in United States regulation. Its legal framework differs by jurisdiction from the internationally used maximum residue limit.
Dietary pesticide exposure: Contact with pesticides through consuming contaminated food or drink. Food residues are a major route by which pesticide exposure can occur.
Environmental fate: The distribution and transformation of a substance across air, water, soil, and living systems. It describes how pesticide residues travel among environmental compartments.
Acceptable daily intake: An estimate of the amount of a substance that can be consumed daily over a lifetime without appreciable health risk. Risk assessors use it to evaluate dietary exposure to pesticide residues.
Analytical detection limit: The smallest amount of an analyte that a specified analytical method can reliably detect. A residue can be detected below a legal limit; detection alone does not establish a violation.
Biomagnification: The increase in concentration of a substance in organisms at successively higher trophic levels. Some persistent residues become more concentrated along food chains.
Bioaccumulation: The buildup of a substance in an organism when uptake exceeds elimination. Persistent pesticide residues can accumulate in organisms faster than they are cleared.
Dietary exposure assessment: An estimate of how much of a substance people consume through food and drink. Residue concentrations and consumption patterns combine to estimate pesticide intake.

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