Institute of Environment, Florida International University, Biscayne Bay Campus, North Miami, FL 33181, USA; Laboratório de Geoquímica Orgânica Marinha (LAGOM), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, RJ 20550-013, Brazil.
Laboratório de Geoquímica Orgânica Marinha (LAGOM), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, RJ 20550-013, Brazil.
Mar Pollut Bull. 2023 Jul;192:115049. doi: 10.1016/j.marpolbul.2023.115049. Epub 2023 May 16.
The distribution of aliphatic and polycyclic aromatic hydrocarbons (PAHs) in surface sediments from mangrove forests of the Rio de Janeiro State was investigated. Ten sampling stations were selected in the mangroves of Sepetiba Bay and the Jacarepaguá Lagoon Complex (JLC), which are areas affected by multiple human activities. The total aliphatic hydrocarbons concentrations showed marked variation between samples (27-407 μg g), mostly related to the total organic carbon contents. The total PAHs concentration ranged between 38 and 792 ng g. Diagnostic indices and statistical analysis showed that the mangrove forests can be divided into three groups: the western portion of Sepetiba Bay with the lowest level of contamination; the inner portion of the bay with the most intense presence of local sources of contamination, especially of pyrolytic character; and the JLC with a greater accumulation of hydrocarbons, mainly derived from petroleum combustion, resultant from the intense urbanization.
对里约热内卢州红树林地区表层沉积物中脂肪族和多环芳烃（PAHs）的分布进行了调查。在塞佩蒂巴湾和雅卡雷帕瓜泻湖综合区（JLC）的红树林中选择了 10 个采样点，这些地区受到多种人类活动的影响。总脂肪族烃浓度在样品之间存在明显差异（27-407μg g），主要与总有机碳含量有关。总多环芳烃浓度范围在 38 和 792ng g 之间。诊断指数和统计分析表明，红树林可分为三组：塞佩蒂巴湾的西部，污染程度最低；湾内部分，局部污染来源最为强烈，尤其是热解特征；JLC 积累了更多的碳氢化合物，主要来自石油燃烧，这是由于城市化的加剧。
