Abreu Ilene Matanó, Cordeiro Renato Campello, Soares-Gomes Abílio, Abessa Denis Moledo S, Maranho Luciane Alves, Santelli Ricardo Erthal
Departamento de Geoquímica, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil; Departamento de Oceanografia, Universidade Federal da Bahia, Salvador, BA 40170-110, Brazil.
Departamento de Geoquímica, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil.
Mar Pollut Bull. 2016 Aug 15;109(1):435-445. doi: 10.1016/j.marpolbul.2016.05.030. Epub 2016 Jun 11.
Surface sediments were collected from Guanabara Bay, at 14 stations distributed in five sectors, over three sampling campaigns. Analyses of metals, grain size fractions and total organic carbon analyses were performed. The geo-accumulation index and the enrichment factor were estimated to assess contamination status based on background values. Additionally, the sediment quality guidelines were applied to evaluate the adverse biological effects. Results show that there was no seasonal variation in sediment quality based on any methodology, and all methods utilized showed that NW sector and HRJ sector were the worst affected and that the NE sector had the best conditions. The sediments of GB are polluted mainly by Cr, Pb and Zn. According to ΣSEM/AVS, these metals are not available to the biota, although toxicity tests dispute this. Among the various methods employed, those using background values for the area seem to best reflect the local historical contamination.
在三次采样活动中，从瓜纳巴拉湾五个区域分布的14个站点采集了表层沉积物。进行了金属、粒度分级和总有机碳分析。根据地积累指数和富集因子，基于背景值评估污染状况。此外，应用沉积物质量准则评估不利的生物效应。结果表明，基于任何方法，沉积物质量均无季节性变化，所有使用的方法均表明，西北区域和里约热内卢港区受影响最严重，而东北区域条件最佳。瓜纳巴拉湾的沉积物主要受铬、铅和锌污染。根据ΣSEM/AVS，这些金属对生物群不可用，尽管毒性测试对此提出质疑。在采用的各种方法中，那些使用该地区背景值的方法似乎最能反映当地的历史污染情况。
