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PROPERTIES OF GYTTJA MATERIALS AND THEIR HUMIC AND FULVIC ACIDS IN AFSIN-ELBISTAN REGION

ABSTRACT

Gyttja materials obtained from Afşin- Elbistan region have been investigated to determine their agricultural values. For this purpose four different gyttja samples- humus, coal, clay and carbonate gyttjas-  and a lignite sample were collected based on their dominant components. Humic acids and fulvic acids were extracted from the raw samples. Since gyttja samples differed considerably in their chemical properties, humic substances content varied. The results showed that, HA and FA contents were the highest in the coal gyttja and the lowest in the carbonate gyttja. Further chemical and physical analysises were done on HA and FA samples to compare each other and determine their properties exactly.