Vallejo Toro Pedro Pablo, Vásquez Bedoya Luis Fernando, Correa Iván Darío, Bernal Franco Gladys Rocío, Alcántara-Carrió Javier, Palacio Baena Jaime Alberto
Researching group in management and environmental modeling (GAIA), University of Antioquia, Medellin, Colombia.
Researching group in management and environmental modeling (GAIA), University of Antioquia, Medellin, Colombia.
Mar Pollut Bull. 2016 Oct 15;111(1-2):311-320. doi: 10.1016/j.marpolbul.2016.06.093. Epub 2016 Jul 15.
The Gulf of Urabá (northwestern Colombia) is a geostrategic region, rich in biodiversity and natural resources. Its economy is mainly based on agribusinesses and mining activities. In this research is determined the impact of these activities in bottom surface sediments of the estuary. Thus, grain size, total organic carbon, total nitrogen, carbonates, Ag, Al, Ca, Cr, Cu, Fe, Hg, Mg, Mn, Ni, Pb and Zn concentrations from 17 surface sediment samples were obtained and enrichment factors (EF) as well as geo-accumulation indices (Igeo) were calculated to determine the contamination level in the gulf. EF and Igeo values revealed that the estuary is extremely contaminated with Ag and moderately contaminated with Zn. Therefore, the observed enrichment of Ag may be explained as a residue of the extraction of gold and platinum-group metals and the enrichment with Zn associated mainly to pesticides used in banana plantations.
乌拉瓦湾（哥伦比亚西北部）是一个具有地缘战略意义的地区，拥有丰富的生物多样性和自然资源。其经济主要以农业综合企业和采矿活动为基础。本研究确定了这些活动对河口底部表层沉积物的影响。因此，获取了17个表层沉积物样本的粒度、总有机碳、总氮、碳酸盐、银、铝、钙、铬、铜、铁、汞、镁、锰、镍、铅和锌的浓度，并计算了富集因子（EF）以及地累积指数（Igeo），以确定该海湾的污染程度。EF和Igeo值表明，该河口受到银的极度污染和锌的中度污染。因此，观察到的银富集现象可能解释为金和铂族金属开采的残留物，而锌的富集主要与香蕉种植园中使用的农药有关。
