Humic acids from coals of the North-Bohemian coal field I.: Preparation and characterisation

被引：95

作者：

Novák, J ^{[1
]}

Kozler, J ^{[1
]}

Janos, P ^{[1
]}

Cezíková, J ^{[1
]}

Tokarová, V ^{[1
]}

Madronová, L ^{[1
]}

机构：

[1] Res Inst Inorgan Chem, CZ-40001 Usti Nad Labem, Czech Republic

来源：

REACTIVE & FUNCTIONAL POLYMERS | 2001年 / 47卷 / 02期

关键词：

humic acids; brown coal;

D O I：

10.1016/S1381-5148(00)00076-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Humic acids were prepared from young North-Bohemian brown coals using alkaline extraction, sedimentation I filtration and acidic precipitation; membrane separations were applied to refine some preparatives. Samples were characterised by chemical analyses, molecular mass distribution, E4/E6 coefficient, IR spectra, C-13-NMR spectra and EPR spectra. The properties of the coal-derived humic acids were compared with the properties of humic acids prepared from chernozem and peat and with the properties of a commercially available humic acid from Fluka. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：101 / 109

页数：9

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