A comparison of two techniques for the isolation of adsorbed dissolved organic material from seawater

¹³C solid-phase NMR and pyrolysis-chemical ionization mass spectrometry were used to characterize adsorbed organic material isolated on an XAD-2 macroreticular resin. Pyrolysis-chemical ionization mass spectrometry was used directly to fingerprint the organics sorbed to a titanium foil exposed in the same marine environment. The XAD-2 isolate was shown to be fractionated relative to the native material and contaminated with the isolation resin.