Visible–Near-Infrared Spectroscopy can predict Mass Transport of Dissolved Chemicals through Intact Soil

The intensification of agricultural production to meet the growing demand for agricultural commodities is increasing the use of chemicals. The ability of soils to transport dissolved chemicals depends on both the soil’s texture and structure. Assessment of the transport of dissolved chemicals (solut...

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Bibliographic Details
Published in:Scientific reports 2018-07, Vol.8 (1), p.11188-9, Article 11188
Main Authors: Katuwal, Sheela, Knadel, Maria, Moldrup, Per, Norgaard, Trine, Greve, Mogens H., de Jonge, Lis W.
Format: Article
Language:English
Subjects:
704/172
704/2151
Agricultural commodities
Agricultural production
Chemical transport
Chemicals
Data acquisition
Data processing
Humanities and Social Sciences
I.R. radiation
Infrared spectroscopy
Mass spectroscopy
Mass transport
multidisciplinary
Organic matter
Science
Science (multidisciplinary)
Soil columns
Soil properties
Solutes
Spectrum analysis
Tritium
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Summary:The intensification of agricultural production to meet the growing demand for agricultural commodities is increasing the use of chemicals. The ability of soils to transport dissolved chemicals depends on both the soil’s texture and structure. Assessment of the transport of dissolved chemicals (solutes) through soils is performed using breakthrough curves (BTCs) where the application of a solute at one site and its appearance over time at another are recorded. Obtaining BTCs from laboratory studies is extremely expensive and time- and labour-consuming. Visible–near-infrared (vis–NIR) spectroscopy is well recognized for its measurement speed and for its low data acquisition cost and can be used for quantitative estimation of basic soil properties such as clay and organic matter. In this study, for the first time ever, vis–NIR spectroscopy was used to predict dissolved chemical breakthrough curves obtained from tritium transport experiments on a large variety of intact soil columns. Averaged across the field, BTCs were estimated with a high degree of accuracy. So, with vis-NIR spectroscopy, the mass transport of dissolved chemicals can be measured, paving the way for next-generation measurements and monitoring of dissolved chemical transport by spectroscopy.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-29306-9