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Quantifying tropical peatland dissolved organic carbon (DOC) using UV-visible spectroscopy.

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posted on 2018-03-28, 09:22 authored by Sarah Cook, Mike Peacock, Chris D. Evans, Susan E. Page, Mick J. Whelan, Vincent Gauci, Lip Khoon Kho
UV-visible spectroscopy has been shown to be a useful technique for determining dissolved organic carbon (DOC) concentrations. However, at present we are unaware of any studies in the literature that have investigated the suitability of this approach for tropical DOC water samples from any tropical peatlands, although some work has been performed in other tropical environments. We used water samples from two oil palm estates in Sarawak, Malaysia to: i) investigate the suitability of both single and two-wavelength proxies for tropical DOC determination; ii) develop a calibration dataset and set of parameters to calculate DOC concentrations indirectly; iii) provide tropical researchers with guidance on the best spectrophotometric approaches to use in future analyses of DOC. Both single and two-wavelength model approaches performed well with no one model significantly outperforming the other. The predictive ability of the models suggests that UV-visible spectroscopy is both a viable and low cost method for rapidly analyzing DOC in water samples immediately post-collection, which can be important when working at remote field sites with access to only basic laboratory facilities.

Funding

We thank the Malaysian Oil Palm Board (grant: R010913000); the University of Aberdeen, the University of St. Andrews, and Sarawak Oil Palms Berhad; and the Natural Environment Research Council (NERC) (grant: X402NE53) for financial support. V.G and S.C are grateful for support from the AXA Research Fund. S.E.P and M.J.W are grateful to the University of Leicester for study leave.

History

Citation

Water Research, 2017, 115, pp. 229-235

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/School of Geography, Geology and the Environment/Physical Geography

Version

  • VoR (Version of Record)

Published in

Water Research

Publisher

Elsevier, IWA Publishing

issn

0043-1354

eissn

1879-2448

Acceptance date

2017-02-25

Copyright date

2017

Available date

2018-03-28

Publisher version

https://www.sciencedirect.com/science/article/pii/S0043135417301574?via=ihub

Language

en

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