One method of extracting organics from groundwater is to pass the solution
through Amberlite XAD-8 ion exchange resin. You would have to dissolve the
stal up first and bring the solution to near neutral first. The organics
can then be flushed from the resin by dilute acid. The method for
groundwater is detailed by Peter Vilks et al. 1996, Applied Geochemistry,
vol. 11, 387-402.
From: Dr S.F. Crowley [SMTP:[log in to unmask]]
Sent: Tuesday, November 20, 2001 9:50 AM
To: [log in to unmask]
Subject: [ISOGEOCHEM] Recovering soluble organic matter
I am making enquiries regarding the extraction and recovery of organic
material trapped in speleothems for carbon isotope analysis. The trapped
organics are largely acid soluble so that when the carbonate is
dissolved by addition of HCl the organic component ends up in solution.
Is there a simple procedure available which will allow the organics to
be recovered as a solid without including any inorganic precipitates?
Stable Isotope Laboratory
University of Liverpool