Mercury, zinc, and copper accumulation in mangrove sediments surrounding a large landfill in southeast Brazil

摘要

The accumulation of Hg. Zn, and Cu was evaluated in mangrove sediments located between a large, 20-years-old landfill and waters of Guanabara Bay (southeast Brazil). The contamination history of the area provides substantial evidence that metal accu- mulation in the study site is influenced by past metal emissions from multiple sources (e. g. contaminated rivers and the landfill surrounding the site). At the southern part of the site, metal levels are up to 890 ng g~-1 Hg, 850 μg g~-1 Zn, and 58 g~-1 Cu.