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Characterization of humic acids extracted from the sediments of the various rivers and lakes in China 被引量:36

Characterization of humic acids extracted from the sediments of the various rivers and lakes in China
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摘要 The humic acids (HAs) isolated from the sediments of the various rivers,lakes,and reservoirs in China were studied using elemental analyzer,fourier transform infrared (FT-IR),and CP/MAS 13C nuclear magnetic resonance (NMR) spectroscopy.The results showed that the HAs were characterized by some common chemical and physicochemical properties,but they also pose some differences in the C-containing functional groups.The C/N,C/H,O/C,and O/H ratios differ widely for the various HAs,showing that the elemental comp... The humic acids (HAs) isolated from the sediments of the various rivers,lakes,and reservoirs in China were studied using elemental analyzer,fourier transform infrared (FT-IR),and CP/MAS 13C nuclear magnetic resonance (NMR) spectroscopy.The results showed that the HAs were characterized by some common chemical and physicochemical properties,but they also pose some differences in the C-containing functional groups.The C/N,C/H,O/C,and O/H ratios differ widely for the various HAs,showing that the elemental comp...
出处 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2008年第11期1294-1299,共6页 环境科学学报(英文版)
基金 the National Basic Research Program (973) of China (No.2004CB418502,2003CB415002) the National Natural Science Foundation of China (No.29977002).
关键词 CP/MAS 13C NMR spectroscopy elemental analysis fourier transform infrared spectroscopy humic acids surficial sediment structural characteristics CP/MAS 13C NMR spectroscopy elemental analysis fourier transform infrared spectroscopy humic acids surficial sediment structural characteristics
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参考文献13

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