ISOLATION AND CHARACTERIZATION OF A HALOORGANIC SOIL HUMIC-ACID

被引：11

作者：

GRON, C ^{[1
]}

RABENLANGE, B ^{[1
]}

机构：

[1] ROYAL VET & AGR UNIV,DEPT CHEM,DK-1871 FREDERIKSBERG C,DENMARK

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 1992年 / 113卷 / 03期

关键词：

ADSORBABLE ORGANIC HALOGENS; HUMIC ACIDS; SOIL;

D O I：

10.1016/0048-9697(92)90006-E

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Humic acid from the B horizon of a podzol profile was extracted and purified by a revised procedure, which avoids organohalogen artefacts. The prepared humic acid contained 0.24% halogens. Analyses for adsorbable organic halogens (AOX), of aqueous solutions of the humic acid and molecular weight and polarity/pK(a) fractions showed, that 65% of the halogen content of the humic acid could be attributed to organic halogens and not to inorganic halogenides. A natural origin of the halogenated humic substances is suggested. Our general perception of organohalogens as antropogenics in the environment is discussed in view of the occurrence of a natural organohalogen pool in soil humic substances.

引用

页码：281 / 286

页数：6

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