Sources and Fluxes of Biogenic and Anthropogenic Carbon Compounds in Antarctic Marine Sediments

本项目的目的是确定人为因素 污染指标以及生物标志化合物， 南极沉积物中存在的有机化合物的特征 捕获颗粒物、表层沉积物和沉积物岩心。 这些 将与其可能的来源有关，例如风成岩 运输、海洋生产力、人类活动等。 该项目最初将集中于脂质成分。 脂质 在水柱中发生了变化， 进入沉积物后发生的变化。 在 这个过程应该突出，因为 丰富的海洋生产力和微不足道的高等植物残骸， 并可能显示出人类活动影响的证据， 全球污染。 详细的有机地球化学 分析沉积物和微粒中的游离和结合脂质， 以及潜在的生物源物质中的总脂质， 描述污染源，估算通量，并研究 有机化合物的双成作用。 结果会更好 了解古海洋环境和地球化学 该地区的进程，以及一个更明确的 确定全球污染的化学示踪物。

The objective of this project is to determine anthropogenic pollution indicators as well as biological marker compounds in antarctic sediments by characterizing organic compounds present in trap particulates, surface sediments, and sediment cores. These will be related to their probable sources, such as aeolian transport, marine productivity, human activities, etc. The project will initially concentrate on lipid components. Lipids are modified within the water column, with further digenetic changes occurring after incorporation into the sediment. In the antarctic environment this process should stand out because of abundant marine productivity and negligible higher plant debris, and may show evidence of the influence of human activities and the influx of global pollution. A detailed organic geochemical analysis of free and bound lipids from sediments and particulates, and total lipids from potential biogenic material, will be carried out to characterize sources, estimate fluxes, and study the digenesis of organic compounds. The result will be a better understanding of paleo-oceanographic conditions and biogeochemical processes of the region, as well as a more definitive identification of chemical tracers of global pollution.