%0 Journal Article
%T Characterization of humic acids extracted from the sediments of the various rivers and lakes in China<br>
%A HE Mengchang
%A SHI Yehong
%A LIN Chunye
%A <br>
%J 环境科学学报(英文版)
%D 2008
%I 
%X 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...
%K CP/MAS 13C NMR spectroscopy
%K elemental analysis
%K fourier transform infrared spectroscopy
%K humic acids
%K surficial sediment
%K structural characteristics<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=1A59490F2105EF1A449603E46D246BFB&yid=67289AFF6305E306&vid=A04140E723CB732E&iid=708DD6B15D2464E8&sid=5A700C739C4FF128&eid=74FE4F3839E9253E&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=44