Wasserlösliche Huminstoffe in Wässern einiger Kiestagebaue der DDR

Autor:	G. Weise, H. Sohr
Rok vydání:	1987
Předmět:	Polarography Chemistry Environmental chemistry Environmental Chemistry Aquatic Science complex mixtures Lower limit General Environmental Science Water Science and Technology
Zdroj:	Acta Hydrochimica et Hydrobiologica. 15:113-123
ISSN:	1521-401X 0323-4320
DOI:	10.1002/aheh.19870150202
Popis:	After an explanation of the complex composition of the system of humic substances, some gravel deposits are described from whose open-pit boundaries there were taken water samples, their content of components of humic matter having been determined. Since spectroscopic analysis techniques yield spectra which are difficult to analyse and have a relatively low detection sensitivity, an indirect polarographic method was applied by which water-soluble humic substances can be determined very selectively down to a lower limit of 5 μg/1. Thus, enrichment in water or in adsorbing columns is not required. From the results found there are derived several statements concerning the occurrence of humic substances and fulvic acids in waters and conclusions about the possible influence on the hardening of concrete are given.
Databáze:	OpenAIRE
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