Department of Environmental Science, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901, USA.
Chemosphere. 2013 Feb;90(6):2013-9. doi: 10.1016/j.chemosphere.2012.10.076. Epub 2012 Dec 1.
In this study, seven soil and sedimentary humic acid samples were analyzed by synchronous scan fluorescence (SSF) spectroscopy. The spectra of these humic acids were compared to each other and characterized, based on three major SSF peaks centered at approximately 281, 367 and 470 nm. Intensity ratios were calculated based on these peaks that were used to numerically assist in source discrimination. All humic acid samples were then reacted with Ferrate(VI) and were again analyzed with SSF. Upon the addition of Ferrate(VI) SSF spectra were obtained which more readily differentiated humic acid source. This method will assist geochemists and water management districts in tracing sources of organic matter to receiving water bodies and may aid in the elucidation of the chemical nature of humic acids.
本研究采用同步扫描荧光（SSF）光谱法分析了 7 个土壤和沉积物腐殖酸样品。比较了这些腐殖酸的光谱，并根据三个主要 SSF 峰（约 281nm、367nm 和 470nm）进行了特征描述。基于这些峰计算了强度比，用于数值辅助源鉴别。然后，所有腐殖酸样品都与高铁酸盐（VI）反应，并用 SSF 再次分析。加入高铁酸盐（VI）后，获得了 SSF 光谱，这些光谱更容易区分腐殖酸的来源。该方法将有助于地球化学家与水管理区追查有机物进入水体的源头，并可能有助于阐明腐殖酸的化学性质。
