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

Cook, Sarah; Peacock, Mike; Evans, Chris D.; Page, Susan E.; Whelan, Mick J.; Gauci, Vincent and Kho, Lip Khoon (2017). Quantifying tropical peatland dissolved organic carbon (DOC) using a UV-visible spectroscopy. Water Research, 115 pp. 229–235.

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DOI (Digital Object Identifier) Link: https://doi.org/10.1016/j.watres.2017.02.059
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Abstract

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.

Item Type: Journal Item
Copyright Holders: 2017 The Authors
ISSN: 0043-1354
Project Funding Details:
Funded Project NameProject IDFunding Body
Risks to the stability of carbon in tropical peatlands experiencing deforestation and drainage: Quantifying greenhouse gas exchange in response to change SE-12-035-VGAXA Research Fund
Keywords: DOC; Tropical peat; Water samples; Spectrophotometry; Sarawak
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
OpenSpace Research Centre (OSRC)
International Development & Inclusive Innovation
Item ID: 48824
Depositing User: Vincent Gauci
Date Deposited: 03 Mar 2017 10:38
Last Modified: 16 May 2017 00:08
URI: http://oro.open.ac.uk/id/eprint/48824
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