Department of Natural and Exact Sciences, Universidad de la Costa, Calle 58 N° 55-66, 080002 Barranquilla, Colombia.
University of Córdoba, Faculty of Basic Sciences, Department of Chemistry, Water, Applied and Environmental Chemistry Group, Monteria, Colombia.
Mar Pollut Bull. 2021 Jun;167:112271. doi: 10.1016/j.marpolbul.2021.112271. Epub 2021 Mar 29.
This work reports the level and ecotoxicity impact of metals in the sediments of the Mallorquín swamp, a protected coastal lagoon in the Caribbean coast of Colombia. The distribution of metals was in the following decreasing order: Zn > Cu > Pb > Cd > Hg, showing statistically significant differences among sites. The average Pb and Cd concentrations in sediments were about 17 and 5 times higher, respectively, compared to those in background values. Several contamination indices suggested moderate contamination of Hg, Cu, and Zn, and strong pollution due to Cd and Pb. Multivariate analysis revealed spatial variations for metals and its anthropogenic origin, such as municipal and industrial wastewater discharges (Pb, Zn, and Hg) and agricultural activities (Cd and Cu). These findings showed the negative impact of human activities and the need to apply protective management strategies.
本研究报告了哥伦比亚加勒比海沿岸受保护的马略尔琴泻湖沉积物中金属的含量和生态毒性影响。金属的分布顺序为 Zn > Cu > Pb > Cd > Hg，各采样点之间存在显著差异。与背景值相比，沉积物中 Pb 和 Cd 的平均浓度分别高出约 17 倍和 5 倍。几种污染指数表明 Hg、Cu 和 Zn 受到中等程度的污染，而 Cd 和 Pb 则受到严重污染。多元分析揭示了金属及其人为来源（如城市和工业废水排放（Pb、Zn 和 Hg）和农业活动（Cd 和 Cu）的空间变化。这些发现表明了人类活动的负面影响，需要采取保护管理策略。
