Ancient Maya Pigment Use Poisoned Yucatán Lakes with Toxic Mercury
A new study reveals ancient Maya use of mercury in red paint poisoned Yucatán lakes, far exceeding modern safety limits for mercury.
POLICY WIRE — Yucatán Peninsula, Mexico — New research indicates that the ancient Maya civilization inadvertently contaminated their local water sources through the extensive use of mercury-based pigments.
A study published in the journal Science Advances details how the reliance on cinnabar, a vibrant red mineral composed of mercury sulfide, led to severe pollution in two lakes across the northern Yucatán Peninsula.
The affected bodies served as vital water supplies for the population, yet the chemical impact may have persisted for centuries.
A research team directed by Matthew Neal Waters of Auburn University analyzed sediment cores from the lakes to track the history of metal accumulation.
The findings revealed mercury concentrations in the lake mud that significantly surpass current safety standards established for modern environments.
Beyond simple toxicity, the sediment layers document dramatic shifts in the aquatic food webs during the period of heavy mercury use.
While previous investigations had identified long-term contamination at specific urban centers like Tikal in Guatemala, this study expands the scope of the environmental impact.
The Maya utilized the mercury for both religious rituals and decorative red paints, unaware of the long-term ecological consequences for their water systems.
Reporting by Policy-Wire (PW)
