Federal University of Pernambuco, Brazil.
Emílio Goeldi Paraense Museum, Northeast, Brazil.
Mar Pollut Bull. 2020 Dec;161(Pt A):111794. doi: 10.1016/j.marpolbul.2020.111794. Epub 2020 Nov 4.
This study aims to determine the background values for metals in the Suape estuarine system, Brazil, and to identify contamination caused by anthropogenic sources. Two cores were sampled. Sedimentation rates and metal content were analysed. The Al-normalized method was used to infer the background values, and to identify anthropic influences, the enrichment and contamination factors and the geoaccumulation index were employed. The results revealed an Mn, Ni, Zn, Ga, Pb, Sr, Ti, Mg, V and Fe content (mg kg) of 101.8, 5.7, 24.4, 8.3, 14.5, 41.9, 2744.6, 4581, 14.9 and ~ 1% respectively. After the installation of the Suape port, an increase in metal contents and in fluxes were recorded. Increases in Zn, Ga, V and Pb are supported by the indexes showing moderate contamination, enrichment and suggest an area moderately polluted. The other studied metals do not reflect an anthropogenic impact, with low values of contamination, enrichment factors and geoaccumulation indexes.
本研究旨在确定巴西苏阿佩河口系统金属的背景值，并确定人为来源造成的污染。采集了两个岩芯。分析了沉积速率和金属含量。采用 Al 归一化法推断背景值，并采用富集和污染因子以及地积累指数来识别人为影响。结果表明，Mn、Ni、Zn、Ga、Pb、Sr、Ti、Mg、V 和 Fe 的含量（mg/kg）分别为 101.8、5.7、24.4、8.3、14.5、41.9、2744.6、4581、14.9 和~1%。在苏阿佩港建成后，记录到金属含量和通量的增加。Zn、Ga、V 和 Pb 的增加得到了显示中度污染、富集的指数的支持，表明该地区受到中度污染。其他研究的金属没有反映出人为影响，其污染、富集因子和地积累指数值较低。
