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首页> 外文期刊>Journal of Environmental Science and Health >Lipid biomarkers profile—presence of coprostanol: recent sediments from Rodrigo de Freitas Lagoon—Rio de Janeiro, Brazil
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Lipid biomarkers profile—presence of coprostanol: recent sediments from Rodrigo de Freitas Lagoon—Rio de Janeiro, Brazil

机译：脂质生物标志物特征—前列腺素的存在：罗德里戈·德·弗雷塔斯泻湖—巴西里约热内卢最近的沉积物

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摘要

Coprostanol (contribution characteristic from anthropogenic pollution) and other lipid biomarkers (sterols, fatty alcohols and fatty acids) were identified and quantified in recent sediment extracts from Rodrigo de Freitas Lagoon, a touristy spot of Rio de Janeiro— Brazil, using gas chromatography with mass selective detector (GC-MSD). The determination of lipid biomarkers profile indicates an autochthonous biogenic contribution due to the presence of phytoplankton, zooplankton, bacteria and dinoflagellates. The allochthonous biogenic contribution was confirmed by detection of biomarkers from higher plants in the sediments due to the influence of the Atlantic Forest inserted in the studied region. The concentration of the studied compounds varied from 5.53 to 216.47 μg·g~(-1) for sterols, 0.47 to 5.35 μg·g~(-1) for fatty alcohols, 20.15 to 66.22 μg.g~(-1) for fatty acids and 0.08 to 3.98 μg·g~(-1) for coprostanol. The presence of coprostanol was attributed to illegal untreated sewage discharge in the pluvial collector which ends up in the Lagoon.
机译：在巴西里约热内卢旅游胜地罗德里戈·德·弗雷塔斯泻湖（Rodrigo de Freitas Lagoon）的最新沉积物提取物中，通过气相色谱-质谱联用技术，鉴定并量化了香豆素（人为污染的贡献特征）和其他脂质生物标记（甾醇，脂肪醇和脂肪酸）。选择性检测器（GC-MSD）。脂质生物标志物谱的确定表明由于浮游植物，浮游动物，细菌和鞭毛藻的存在而引起的自生生物贡献。通过检测沉积物中高等植物的生物标记物，证实了异源生物的贡献，这是由于受研究区域中插入的大西洋森林的影响。所研究化合物的固醇浓度为5.53至216.47μg·g〜（-1），脂肪醇为0.47至5.35μg·g〜（-1），脂肪为20.15至66.22μg·g〜（-1）。酸和0.08至3.98μg·g〜（-1）的前列腺素。前列腺素的存在归因于排泄物收集器中非法未经处理的污水排放，该收集器最终到达泻湖。

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