Fluorescent Dissolved Organic Matter in Natural Waters
Fluorescent Dissolved Organic Matter in Natural Waters
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DOI：
10.1007/978-3-642-32223-5_6
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
K. M. Mostofa;Cong-Qiang Liu;T. Yoshioka;D. Vione;Yunlin Zhang;H. Sakugawa
中科院分区：
文献类型：
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作者：
K. M. Mostofa;Cong-Qiang Liu;T. Yoshioka;D. Vione;Yunlin Zhang;H. Sakugawa
外来和本地来源的溶解有机物 (DOM) 是有机化合物的异质混合物，天然水中的分子量范围从小于 100 到超过 300,000 Da。 DOM 成分参与关键的生物地球化学过程，例如全球碳循环、营养动态、光合作用、生物活动，最后作为水生环境中的能源。在 DOM 成分中，只有有限部分的有机化合物表现出荧光特性。这些化合物被称为荧光 DOM (FDOM)。在 Kalle 和 Duursma 进行的开创性工作中，陆地腐殖质的荧光可以作为淡水和海水环境中土壤有机质的示踪剂。随后，腐殖质的荧光被用来区分河水与海水的混合情况及其来源。
Dissolved organic matter (DOM), of allochthonous and autochthonous origin, is a heterogeneous mixture of organic compounds, with molecular weights ranging from less than 100 to over 300,000 Da in natural waters. The DOM components are involved into key biogeochemical processes such as global carbon cycle, nutrient dynamics, photosynthesis, biological activity and finally as energy sources in the aquatic environments. Among the DOM components, only a limited fraction of organic compounds show fluorescence properties. These compounds are termed the fluorescent DOM (FDOM). In the pioneering works conducted by Kalle and Duursma, the fluorescence of terrestrial humic substances served as a tracer of soil organic matter in freshwater and seawater environments. The fluorescence of humic substances has then been used to distinguish the mixing of river water with seawater as well as their sources.