The leachability of carbon-14-labelled 3,4-benzopyrene from coal ash into aqueous systems
article
The leachability of polycyclic aromatic hydrocarbons from coal ash into aqueous systems was studied. Carbon-14-labeled 3,4-Benzopyrene (BaP) was deposited on coal fly ash by adsorption from the liquid phase in quantities of about 10 ??g/g ash. After a thermal treatment in air at 120??C for 2 hours the desorption of BaP was measured using aqueous solutions of acetone and methanol as extractants and liquid scintillation counting as detection method. In all cases the 14C-recovery was incomplete. Using water as extractant, 14C-recoveries of about 1% were found. In the presence of a non-ionic surface active agent (Tween 80) the 14C-recovery was enhanced significantly. For these reasons further experiments under realistic waste disposal conditions are necessary.
TNO Identifier
229724
ISSN
00456535
Source
Chemosphere, 13(12), pp. 1343-1351.
Publisher
Pergamon Press
Pages
1343-1351
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