Abstract
To investigate the characteristics of dissolved organic matter (DOM) in snow, snow samples collected during two snow eventy at typical sites in different districts of Beijing were characterized by UV-vis spectroscopy, three-dimensional fluorescence spectroscopy and synchronous fluorescence spectroscopy. The results revealed that the concentrations of dissolved organic carbon (DOC) at different sites varied widely, which might be attributed to the different nature of underlying surface materials. DOM in snow samples was composed of organic compounds with lower molecular weight and less aromatic structures, which can be possibly attributed to small amount of fulvic acid produced by biological activity. The information obtained from synchronous fluorescence spectra showed that some protein material and aromatic compounds were also found in the DOM. The investigation of spectroscopic properties can facilitate further insight into the interaction between DOM and co-existing pollutants, and also can provide basic information on the efficient utilizations of snow.
Published Version
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