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The aim of this research was to improve methodologies used to extract organic acids from groundwater with diethylaminoethyl cellulose (DEAE-cellulose). Mechanisms of retention and elution of humic and fulvic acids from DEAE-cellulose were investigated. Theoretical and practical evidence from thin layer chromatography (TLC) and batch extraction studies shows that humic and fulvic acids may be eluted either by neutralisation of the cationic character of the resin or by neutralisation of the anionic character of the bound material, provided that secondary interactions are reduced. It is concluded that the use of moderately alkaline reagents such as 0.5 M NaOH produce the best yield of extracted material while minimising further treatment and oxidation.

Additional information

Authors: SMITH B, British Geological Survey, Analytical Geochemistry Group, Kinsley Dunham Centre, Nottingham (GB);MOODY P, British Geological Survey, Fluid Processes Group, Kinsley Dunham Centre, Nottingham (GB)
Bibliographic Reference: EUR 14968 EN (1994) 42 pp., FS, ECU 7
Availability: (2)
ISBN: ISBN 92-826-6475-9
Record Number: 199410292 / Last updated on: 1994-11-28
Original language: en
Available languages: en