DOI - Mendel University Press

DOI identifiers

DOI: 10.11118/978-80-7701-024-5-0033

Assessing Repeatability and Precision of Dosing Techniques in Soil Particle Size Distribution Analysis Using Laser Diffraction

Stanislav Paseka1
1 Faculty of Civil Engineering, Institute of Landscape Water Management, Brno University of Technology, Veveří 95, 602 00 Brno, Czech Republic

This study investigates the precision and reliability of various dosing repeatability techniques for laser diffraction particle size analysis in soil samples, focusing on the impact of dosing methods on measurement reproducibility and accuracy. Three different dosing techniques (A) manual pipetting with a shaker, (B) a mash using a spatula, and (C) a dried sample using a spatula) were evaluated using a laser diffraction analyser. Soil samples representing sandy, loamy, and clayey types were analysed to assess the relative standard deviations (SD) for particle size measurements. The results were compared to traditional pipetting methods to identify discrepancies and evaluate the impact of dosing techniques on measurement precision. Significant variations in measurement precision were observed among the dosing techniques. Manual pipetting technique (A) exhibited higher relative SDs, with average values of 22.4%, indicating substantial variability and lower repeatability. In contrast, techniques B and C achieved lower relative SDs, averaging 8.1% and 7.9%, respectively. The study also confirmed that laser diffraction tends to underreport clay fractions and overreport silt fractions compared to pipetting. The results highlight the critical role of dosing technique in determining measurement precision for laser diffraction particle size analysis. Carefully optimized manual methods (such as techniques B or C) can still achieve high levels of precision, approaching those of automated dosing systems. These insights are essential for improving analytical practices and ensuring reliable soil particle size measurements in various applications.

Keywords: soil particle size sistribution (PSD), laser diffraction analysis, sample dosing techniques, repeatability assessment, standard deviation analysis

pages: 33-46, online: 2025



References

  1. BEUSELINCK, L., GOVERS, G., POESEN, J., DEGRAER, G., FROYEN, L. 1998. Grain-size analysis by laser diffractometry: comparison with the sieve-pipette method. Catena. 32(3-4), 193-208. https://doi.org/10.1016/S0341-8162(98)00051-4 Go to original source...
  2. BIEGANOWSKI, A., RYŻAK, M., SOCHAN, A., BARNA, G., HERNÁDI, H., BECZEK, M., POLAKOWSKI, C., MAKÓ, A. 2018. Laser diffractometry in the measurements of soil and sediment particle size distribution. In: SPARKS, D. L. (Ed.). Advances in Agronomy. 151, 215-279. Academic Press.https://doi.org/10.1016/bs.agron.2018.04.003 Go to original source...
  3. CALLESEN, I., KECK, H. ANDERSEN, T. J. 2018. Particle size distribution in soils and marine sediments by laser diffraction using Malvern Mastersizer 2000-method uncertainty including the effect of hydrogen peroxide pretreatment. J Soils Sediments. 18, 2500-2510. https://doi.org/10.1007/s11368-018-1965-8 Go to original source...
  4. DI STEFANO, C., FERRO, V., MIRABILE, S. 2010. Comparison between grain-size analyses using laser diffraction and sedimentation methods. Biosystems Engineering. 106(2), 205-215. https://doi.org/10.1016/j.biosystemseng.2009.12.011 Go to original source...
  5. ESHEL, G., LEVY, G. J., MINGELGRIN, U., SINGER, M. J. 2004. Critical evaluation of the use of laser diffraction for particle-size distribution analysis. Soil Science Society of America Journal. 68(3), 736-743. https://doi.org/10.2136/sssaj2004.7360 Go to original source...
  6. FREEDMAN, D., PISANI, R., PURVES, R. 2007. Statistics. 4th ed. W.W. Norton & Company.ISBN 0-393-92972-8
  7. FRITSCH. 2020. Laser particle sizer Analysette 22 NeXT Nano. https://www.fritsch-international.com/particle-sizing/overview/details/product/laser-particle-sizer-analysette-22-next-nano/
  8. GEE, G. W., OR, D. 2002. Particle-size analysis. In: DANE, J. H., TOPP, G. C. (Eds.). Methods of Soil Analysis: Part 4 Physical Methods. Soil Science Society of America, pp. 255-293. https://doi.org/10.2136/sssabookser5.4.c12 Go to original source...
  9. KONERT, M., VANDENBERGHE, J. 1997. Comparison of laser grain size analysis with pipette and sieve analysis: A solution for the underestimation of the clay fraction. Sedimentology. 44(3), 523-535. https://doi.org/10.1111/j.1365-3091.1997.tb01421.x Go to original source...
  10. LISÁ, L. 2016. Jevy a procesy v neživé přírodě v kontextu vývoje současné krajiny a archeologického záznamu. Habilitation Thesis. Brno, Masaryk University in Brno.
  11. LOIZEAU, J. L., ARBOUILLE, D., SANTIAGO, S., VERNET, J. P. 1994. Evaluation of a wide range laser diffraction grain size analyser for use with sediments. Sedimentology. 41(2), 353-361. https://doi.org/10.1111/j.1365-3091.1994.tb01410.x Go to original source...
  12. MILLER, B. A., SCHAETZL, R. J. 2011. Precision of soil particle size analysis using laser diffractometry. Soil Science Society of America Journal. 76(5), 1719-1727. https://doi.org/10.2136/sssaj2011.0146 Go to original source...
  13. MURRAY, J. W. 2002. The use of laser diffraction for the particle size analysis of soils. European Journal of Soil Science. 53(5), 639-644. https://doi.org/0.1046/j.1365-2389.2002.00485.x
  14. PASEKA, S. 2022. The application of the laser diffraction to determine soil texture and influence on soil texture classification. In: International multidisciplinary geoconference SGEM. Conference Proceedingsc Volume 22. Hydrology and Water Resources. Bulgaria. https://doi.org/10.5593/sgem2022/3.1/s13.37 Go to original source...
  15. PIERI, L., BITTELLI, M., PISA, P. R. 2006. Laser diffraction, transmission electron microscopy and image analysis to evaluate a bimodal Gaussian model for particle size distribution in soils. Geoderma. 135, 118-132. https://doi.org/10.1016/j.geoderma.2005.11.009 Go to original source...
  16. POLAKOWSKI, C., RYŻAK, M., SOCHAN, A., BECZEK, M., MAZUR, R., BIEGANOWSKI, A. 2021. Particle Size Distribution of Various Soil Materials Measured by Laser Diffraction-The Problem of Reproducibility. Minerals. 11(5),465. https://doi.org/10.3390/min11050465 Go to original source...
  17. ROBERSON, S., WELTJE, G. J. 2014. Inter-instrument comparison of particle-size analyzers. Sedimentology. 61(5), 1157-1174. https://doi.org/10.3390/min1105046510.1111/sed.12093 Go to original source...
  18. RYŻAK, M., BIEGANOWSKI, A. 2010. Methodological aspects of determining soil particle-size distribution using the laser diffraction method. Journal of Plant Nutrition and Soil Science. 173(5), 748-758. https://doi.org/10.3390/min1105046510.1002/jpln.200800325 Go to original source...
  19. SVENSSON, D. N., MESSING, I., BARRON, J. 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. https://doi.org/10.3390/min1105046510.1016/j.still.2022.105450 Go to original source...
  20. WEIWEN, Q. I. U., WEI, H. U., CURTIN, D., MOTOI, L. 2021. Soil particle size range correction for improved calibration relationship between the laser-diffraction method and sieve-pipette method. Pedosphere. 31(1), 134-144. https://doi.org/10.3390/min110504650.1016/S1002-0160(20)60055-8 Go to original source...
  21. XU, R., DI GUIDA, O. A. 2003. Comparison of sizing small particles using different technologies. Powder Technology. 132(2-3), 145-153. https://doi.org/10.3390/min1105046510.1016/S0032-5910(03)00048-2 Go to original source...
  22. YANG, X., ZHANG, Q., LI, X., JIA, X., WEI, X., SHAO, M. A. 2015. Determination of soil texture by laser diffraction method. Soil Science Society of America Journal. 79(6), 1556-1566. https://doi.org/10.3390/min1105046510.2136/sssaj2015.04.0164 Go to original source...