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Rapid estimation of Brilliant Blue concentrations in soil by diffuse reflectance spectroscopy
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  • Published: 19 March 2010

Rapid estimation of Brilliant Blue concentrations in soil by diffuse reflectance spectroscopy

  • Christina Bogner1,
  • Iris Schmiedinger2 &
  • Bernd Huwe2 

Nature Precedings (2010)Cite this article

  • 341 Accesses

  • 1 Citations

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Abstract

Brilliant Blue is often used to trace water movement in soils. Its concentration in soil samples is usually determined by extraction – a laborious procedure with varying accuracy. We show that Brilliant Blue can be estimated directly by visible diffuse reflectance spectroscopy. We build a PLSR (partial least squares regression) model for the concentration range of 0.1 to 15 mg Brilliant Blue per g soil with an RMSE (root mean square error of prediction) of 1 mg g-1 and an R2adj of 0.9. However, as the method is based on visible spectra, prediction accuracy can be altered by variations in soil colour between calibration and prediction data sets.

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Authors and Affiliations

  1. Ecological Modelling, University of Bayreuth https://www.nature.com/nature

    Christina Bogner

  2. Soil Physics Group, University of Bayreuth https://www.nature.com/nature

    Iris Schmiedinger & Bernd Huwe

Authors
  1. Christina Bogner
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  2. Iris Schmiedinger
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  3. Bernd Huwe
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Corresponding author

Correspondence to Christina Bogner.

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Bogner, C., Schmiedinger, I. & Huwe, B. Rapid estimation of Brilliant Blue concentrations in soil by diffuse reflectance spectroscopy. Nat Prec (2010). https://doi.org/10.1038/npre.2010.4293.1

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  • Received: 19 March 2010

  • Accepted: 19 March 2010

  • Published: 19 March 2010

  • DOI: https://doi.org/10.1038/npre.2010.4293.1

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Keywords

  • Tracer study
  • vadose zone
  • Soil
  • Brilliant Blue
  • diffuse refelctance spectroscopy
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