Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico, 191, Butantã, 05508-120 São Paulo, SP, Brazil.
Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico, 191, Butantã, 05508-120 São Paulo, SP, Brazil.
Mar Pollut Bull. 2018 Feb;127:1-9. doi: 10.1016/j.marpolbul.2017.11.016. Epub 2017 Nov 22.
The Cananéia-Iguape system is located in a coastal region of southeastern Brazil, recognized by UNESCO as an Atlantic Forest Biosphere Reserve. This system has suffered substantial environmental impacts due to the opening of an artificial channel and by past intensive mining activities. In this paper was performed the sequential chemical extraction of Cu, Pb, and Zn, on previously described sediment cores, and the statistical treatment of the data, allowing to estimate the remobilization geochemical behavior, the available content and the trend of accumulation between 1926 and 2008. The maximum available level (sum of all mobile fraction) were, in mgkg, 18.74 for Cu, 177.55 for Pb and 123.03 for Zn. Considering its environmental availability, Pb remains a concern in the system. It was possible to recognize the anthropic contribution of Pb, being the mining activities considered the only potential source of this metal in the region.
卡纳埃亚-伊瓜佩系统位于巴西东南部的沿海地区，被联合国教科文组织认定为大西洋森林生物圈保护区。由于人工航道的开辟和过去密集的采矿活动，该系统受到了严重的环境影响。本文对先前描述的沉积物岩芯进行了铜、铅和锌的连续化学提取，并对数据进行了统计处理，从而可以估算出 1926 年至 2008 年间这些金属的重新迁移地球化学行为、有效含量和积累趋势。最大的有效水平（所有可移动部分的总和）分别为：Cu，18.74mg/kg；Pb，177.55mg/kg；Zn，123.03mg/kg。考虑到其环境可用性，Pb 仍然是该系统关注的问题。可以识别出 Pb 的人为贡献，因为采矿活动被认为是该地区这种金属的唯一潜在来源。
