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Open AccessArticle

Laser Diffraction as An Innovative Alternative to Standard Pipette Method for Determination of Soil Texture Classes in Central Europe

1
Department of Biometeorology and Hydrology, Slovak University of Agriculture, 94976 Nitra, Slovakia
2
Department of Soil Science, Slovak University of Agriculture, 94901 Nitra, Slovakia
3
Institute of Hydrology Slovak Academy of Sciences, 84104 Bratislava, Slovakia
*
Authors to whom correspondence should be addressed.
Water 2020, 12(5), 1232; https://doi.org/10.3390/w12051232
Received: 24 March 2020 / Revised: 21 April 2020 / Accepted: 22 April 2020 / Published: 26 April 2020
(This article belongs to the Special Issue Hydrological Impacts of Climate Change and Land Use)
The paper presents the comparison of soil particle size distribution determined by standard pipette method and laser diffraction. Based on the obtained results (542 soil samples from 271 sites located in the Nitra, Váh and Hron River basins), regression models were calculated to convert the results of the particle size distribution by laser diffraction to pipette method. Considering one of the most common soil texture classification systems used in Slovakia (according to Novák), the emphasis was placed on the determination accuracy of particle size fraction <0.01 mm. Analysette22 MicroTec plus and Mastersizer2000 devices were used for laser diffraction. Polynomial regression model resulted in the best approximation of measurements by laser diffraction to values obtained by pipette method. In the case of particle size fraction <0.01 mm, the differences between the measured values by pipette method and both laser analyzers ranged in average from 3% up to 9% and from 2% up to 11% in the case of Analysette22 and Mastersizer2000, respectively. After correction, the differences decreased to average 3.28% (Analysette22) and 2.24% (Mastersizer2000) in comparison with pipette method. After recalculation of the data, laser diffraction can be used alongside the sedimentation methods. View Full-Text
Keywords: pipette method; laser diffraction; Analysette22 MicroTec plus; Mastersizer2000; particle size fractions; sample preparation pipette method; laser diffraction; Analysette22 MicroTec plus; Mastersizer2000; particle size fractions; sample preparation
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MDPI and ACS Style

Igaz, D.; Aydin, E.; Šinkovičová, M.; Šimanský, V.; Tall, A.; Horák, J. Laser Diffraction as An Innovative Alternative to Standard Pipette Method for Determination of Soil Texture Classes in Central Europe. Water 2020, 12, 1232.

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