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An investigation in laser diffraction soil particle size distribution analysis to obtain compatible results with sieve and pipette method

Nimblad Svensson, David and Messing, Ingmar and Barron, Jennie (2022). An investigation in laser diffraction soil particle size distribution analysis to obtain compatible results with sieve and pipette method. Soil and Tillage Research. 223 , 105450
[Research article]

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Abstract

Recent studies have shown that soil particle size analyses using laser diffraction method (LDM) can give compatible results compared with traditional sedimentation based methods, if the clay-silt particle size cutoff is transformed. Additionally, procedures including separation of the sand fraction by wet sieving and running a well dispersed sample of only fractions smaller than sand during laser diffraction measurement, have given promising results. The main purpose of the present study was to test a combination of these approaches for determining cutoff transformed LDM values on 44 soil samples from agricultural sites spread over Sweden, including its compatibility with the sieve and pipette method (SPM). Furthermore, these results were compared with results of transformed LDM values based on pedotransfer functions between measured LDM and SPM. Also LDM related aspects concerning scattering parameters, repeatability and organic matter calculations were studied. To find the optimum clay-silt cutoff, Lin's concordance correlation coefficient (Lin's CCC) was calculated. The highest value (0.977) was found with the 3.409-3.905 mu m bin (a refractive index of 1.52 and an absorption coefficient of 0.1 was used). The pedotransfer-transformed LDM approach showed equally high Lin acute accent s CCC as the cutoff-transformed approach for the different soil particle fraction size classes. With the cutofftransformed LDM approach, 36 out of 44 samples were assigned to the same texture class as SPM, and with the pedotransfer-transformed LDM, the corresponding number was similar (34 out of 44 samples). The results here are promising for application in routine soil analyses, but more specific transformed clay-silt cutoffs and pedotransfer functions for LDM versus SPM should ideally be established for different types of soils. For this, microscopy and image analysis methods to help understand and quantify the influence of particle shapes on obtained particle size distributions are useful.

Authors/Creators:Nimblad Svensson, David and Messing, Ingmar and Barron, Jennie
Title:An investigation in laser diffraction soil particle size distribution analysis to obtain compatible results with sieve and pipette method
Series Name/Journal:Soil and Tillage Research
Year of publishing :2022
Volume:223
Article number:105450
Number of Pages:11
ISSN:0167-1987
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
Keywords:Soil, Particle size distribution, Laser diffraction, Soil texture, Particle shape
URN:NBN:urn:nbn:se:slu:epsilon-p-118891
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-118891
Additional ID:
Type of IDID
DOI10.1016/j.still.2022.105450
Web of Science (WoS)000814722300002
ID Code:28826
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:12 Sep 2022 12:28
Metadata Last Modified:12 Sep 2022 12:31

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