Fossil fuels are of utmost importance to the world we live in today. However, their use can cause major impacts on the environment, especially on water resources. In this regard, algae have been intensively used as a strategy for remediation and monitoring of environmental pollution due to its efficient absorption of contaminants. In this work, samples of seaweed collected in Niterói/RJ—contaminated with kerosene and diesel—were analyzed by radiocarbon (14C) accelerator mass spectrometry (AMS) and by n-alkane quantification with gas chromatography to evaluate bioaccumulation in function of the dosage of contaminants. The biogenic content measured by radiocarbon analysis resulted in 95.6% for algae contaminated with 10 mL of kerosene and 67.6% for algae contaminated with 10 mL of diesel. The maximum intensity of n-C17 n-alkane in algae with 5 mL, 10 mL, and 15 mL of diesel was 768.2, 1878.1, and 5699.2 ng.g-1, respectively. While the maximum concentration of n-C27 in algae with 5 mL, 10 mL and 15 mL of kerosene was 3.3, 35.9, and 150.3 ng.g-1. We concluded that, for both contaminants, their incorporation into algae increases as the contamination dosage increases, making this methodology an effective technique for monitoring and remediation of urban aquatic ecosystems.

中文翻译：

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化石燃料环境污染：使用放射性碳、正构烷烃和藻类的策略

化石燃料对我们今天生活的世界至关重要。然而，它们的使用会对环境造成重大影响，尤其是对水资源。在这方面，由于藻类对污染物的有效吸收，藻类已被广泛用作修复和监测环境污染的策略。在这项工作中，在 Niterói/RJ 采集的海藻样本——被煤油和柴油污染——进行了放射性碳分析（14C) 加速器质谱法 (AMS) 和通过气相色谱法对正烷烃进行定量，以评估污染物剂量函数中的生物累积。通过放射性碳分析测得的生物成因含量表明，被 10 mL 煤油污染的藻类为 95.6%，被 10 mL 柴油污染的藻类为 67.6%。nC的最大强度17含有 5 mL、10 mL 和 15 mL 柴油的藻类中的正烷烃分别为 768.2、1878.1 和 5699.2 ng.g-1， 分别。而 nC 的最大浓度27在含有 5 mL、10 mL 和 15 mL 煤油的藻类中，分别为 3.3、35.9 和 150.3 ng.g-1. 我们得出的结论是，对于这两种污染物，随着污染剂量的增加，它们与藻类的结合也会增加，这使得这种方法成为监测和修复城市水生生态系统的有效技术。