XAD-FRACTIONATION OF NEW DISSOLVED ORGANIC-MATTER - IS THE HYDROPHOBIC FRACTION SERIOUSLY UNDERESTIMATED

Authors
LARA RJ THOMAS DN
Citation
Rj. Lara et Dn. Thomas, XAD-FRACTIONATION OF NEW DISSOLVED ORGANIC-MATTER - IS THE HYDROPHOBIC FRACTION SERIOUSLY UNDERESTIMATED, Marine chemistry, 47(1), 1994, pp. 93-96
Citations number
10
Categorie Soggetti
Oceanografhy,Chemistry
Journal title
Marine chemistry → ACNP
ISSN journal
03044203
Volume
47
Issue
1
Year of publication
1994
Pages
93 - 96
Database
ISI
SICI code
0304-4203(1994)47:1<93:XONDO->2.0.ZU;2-7
Abstract
Freshly produced radiolabelled dissolved organic carbon (PDOC) from a marine diatom culture was fractionated on XAD-2 by NaOH/methanol eluti on. A large portion (32%) of the hydrophobic fraction could not be elu ted by standard procedures. Only after severe hydrolysis and further e xtraction was it possible to recover most of this material. These find ings indicate that usual XAD-2 fractionation methods may result in lar ge underestimates of the hydrophobic fraction of PDOC.