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Poluição por mercúrio em aterros urbanos do período colonial no extremo sul do Brasil

2010; Brazilian Chemical Society; Volume: 33; Issue: 8 Linguagem: Inglês

10.1590/s0100-40422010000800002

1678-7064

Luiz Paulo de Moura Fragomeni, Arí Roisenberg, Nicolai Mirlean,

Agricultural and Food Sciences

S SOUTHERNMOST.Land reclamation fills in the city of Rio Grande (RS) are polluted by mercury with concentrations ranging from 0.3 to 18.7 mg kg -1 .The level of Hg pollution decreases from the oldest landfills of 18 th century to recent ones.Mercury distribution along vertical profiles resembles the same for copper, lead, and zinc, what allow supposing that mercury distribution has an autochthonous character.It is suggested that the principal source of mercury pollution was the activities related to animal skin and fair hair treatment, using ancient technology known as "carroting".Similar scenario of environmental risk could be met in other Brazilian cities with similar colonization history.