RADIOACTIVE LABELING AND CHARACTERIZATION OF HUMIC MATERIALS

被引：9

作者：

LASSEN, P

CARLSEN, L

WARWICK, P

RANDALL, A

ZHAO, R

机构：

[1] National Environmental Research Institute, Department of Environmental Chemistry

[2] Department of Chemistry, Loughborough University of Technology, Loughborough

来源：

ENVIRONMENT INTERNATIONAL | 1994年 / 20卷 / 01期

关键词：

D O I：

10.1016/0160-4120(94)90076-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Humic acids can radiolabelled either by chemical techniques, either with iodine or with carbon-14. This paper discusses the advantages and disadvantages of the different labelling techniques for chemical radiolabelling of humic materials as well as the optimum conditions for the labelling. Various techniques have been applied in order to characterize the labelled material to elucidate possible changes of the inherent characteristics of the humic acids introduced during the labelling process. These techniques comprise ultrafiltration, e.g. size fractionation, metal complexing ability, UV absorbance and fluorescence, and DEAE cellulose abstraction. It has been demonstrated that with respect to these features, the radiolabelling techniques do not alter the humic acid molecules.

引用

页码：127 / 134

页数：8

共 24 条

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