Comparison of extraction efficiencies for water-transportable phenols from different land uses

Williams, Jonathan S.; Bol, Roland; Abbott, Geoffrey D.; Dungait, Jennifer A. J.

doi:10.1016/j.orggeochem.2016.09.010

Journal Article

FZJ-2016-06145

Comparison of extraction efficiencies for water-transportable phenols from different land uses

Williams, J. S. ; Dungait, J. A. J. ; Bol, R.FZJ* ; Abbott, G. D. (Corresponding author)

2016
Elsevier Science Amsterdam [u.a.]

Organic geochemistry 102, 45 - 51 (2016) [10.1016/j.orggeochem.2016.09.010]

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Please use a persistent id in citations: http://hdl.handle.net/2128/12782 doi:10.1016/j.orggeochem.2016.09.010

Abstract: The composition and quantification of vascular plant-derived phenols in dissolved organic matter (DOM) is of importance in understanding and estimating carbon flux from soils under different land uses. Solid phase extraction (SPE) was used to extract waterborne organic matter (WBM), and thermally assisted hydrolysis (THM) using tetramethylammonium hydroxide (TMAH) was compared with gas chromatography-flame ionization detection (GC-FID) for the quantification of oxygenated aromatics in WBM, from freshwater samples from grazed grassland, woodland and moorland land uses in southwest England, UK.WBM recovered with SPE correlated with water total organic carbon (TOC) content. SPE followed by THM was shown to be the approach for isolating and quantifying water-transportable phenols. All the different land uses exported similar amounts of lignin per unit weight of OC to the drainage water. We also conclude that a significant proportion of lignin phenols is lost from soils as a component of WBM in a particulate form, so the magnitude of total phenol loss is likely greater than previously thought.

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