Comparison of adsorption coefficient (K[sub oc]) for soils and HPLC retention factors of aromatic hydrocarbons using a chemically immobilized humic acid column in RP-HPLC
- National Research Inst. for Radiobiology and Radiohygiene, Budapest (Hungary)
- National Radiological Protection Board, Didcot (United Kingdom)
The determination of soil adsorption coefficients (K[sub oc]) via HPLC capacity factors (k[prime]) has been studied, including the effect of column type and mobile phase composition on the correlation between log K[sub oc] and log k[prime]. K[sub oc] values obtained by procedures other than HPLC correlate well with HPLC capacity factors determined on a chemically immobilized humic acid stationary phase, and it is suggested that this phase is a better model for the sorption onto soil or sediment than the octadecyl-, phenyl- and ethylsilica phases. By using log k[prime][sub w] a theoretical capacity factor has been obtained by extrapolation of the retention data in a binary solvent system to pure aqueous eluent. There is a better correlation between log K[sub oc] and log k[prime][sub w] than the correlation between log K[sub oc] and log k[prime].
- OSTI ID:
- 6912007
- Journal Information:
- Journal of Liquid Chromatography; (United States), Journal Name: Journal of Liquid Chromatography; (United States) Vol. 17:12; ISSN 0148-3919; ISSN JLCHD8
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400105 -- Separation Procedures
54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
AROMATICS
CHEMISTRY
CHROMATOGRAPHY
CONTAMINATION
HYDROCARBONS
LIQUID COLUMN CHROMATOGRAPHY
ORGANIC COMPOUNDS
PHASE STUDIES
SEPARATION PROCESSES
SOIL CHEMISTRY
SOILS