Overview
Supply-chain pages describe the paths by which heavy metals enter the food system, and which sources put them there. Coverage includes soil geochemistry and agricultural uptake; the aquatic pathway by which metals reach fish, shellfish, and seaweed; atmospheric deposition from smelting, mining, shipping, traffic, and aviation; irrigation water, sewage sludge, biosolids, and fertilisers as anthropogenic inputs to cropland; food-contact equipment and packaging; and the source-attribution evidence that apportions an ambient burden among the industries that created it. Pages link to the downstream ingredients and products affected, and to the regulations governing inputs. The load-bearing rule across every page in this section is that an upstream concentration, in soil, water, sediment, air, or an emission inventory, is never a food concentration and is never promoted into the measured food-occurrence record or the certification thresholds.
Pathway hubs
- Soil-to-plant transfer of heavy metals
- Aquatic bioaccumulation of heavy metals
- Atmospheric deposition of heavy metals
- Irrigation water and soil amendments as anthropogenic inputs to cropland
Source attribution
Element- and material-specific
Update history
No substantive edit history is available in this build. The full commit record is available in git.