How does pretreatment of dry steppe soils affect particle size analysis by laser diffraction?

2020 ◽  
Author(s):  
Moritz Koza ◽  
Aleksey Prays ◽  
Andrej Bondarovich ◽  
Kanat Akshalov ◽  
Christopher Conrad ◽  
...  
Keyword(s):  
Particle Size ◽  
Diffraction Method ◽  
Particle Size Analysis ◽  
Laser Diffraction ◽  
Size Analysis ◽  
Dry Steppe ◽  
Land Use Types ◽  
Wide Range ◽  
Binding Agents ◽  
Sample Dispersion

<p>After extensive research on different methods to measure<strong> particle size distribution</strong> (PSD), soil scientists are proposing the<strong> laser diffraction method</strong> (LDM) as a standard method for soil texture analysis. However, the effects of different pretreatments on particle size analysis of dry steppe soils with LDM has not been tested so far. This study aims to evaluate <strong>different pretreatment methods</strong> with the purpose to disperse aggregates and remove binding agents in <strong>Chernozem and Kastanozem</strong> soils. To cover a wide range of different land-use types and farming methods, 112 surface soil samples were taken from 13 fields on four different test sites in <strong>Kazakhstan</strong>. Before LDM analysis, all samples were pretreated with either H<sub>2</sub>O<sub>2</sub> to remove organic carbon or HCl to remove carbonates. The results showed that removing organic matter with H<sub>2</sub>O<sub>2</sub> led to complete sample dispersion while HCl pretreatment caused incomplete dispersion, likely due to aggregation by calcium ions released by the dissolution of carbonates.</p>

Particle Size Analysis by Laser Diffraction Method Using Reference Particles

2012 ◽  
Vol 508 ◽  
pp. 33-37 ◽  
Author(s):  
Yasushige Mori ◽  
Hideto Yoshida ◽  
Hiroaki Masuda
Keyword(s):  
Particle Size ◽  
Size Distribution ◽  
Diffraction Method ◽  
Particle Size Analysis ◽  
Laser Diffraction ◽  
Round Robin ◽  
Size Analysis ◽  
Silica Sample ◽  
Round Robin Test ◽  
Em Method

The particle size analysis (PSA) by laser diffraction (LD) method can be used for monitor or control of particulate process, because it has the advantages of shorter measurement time and good repeatability, and a variety of commercial instruments is available. However particle size distribution (PSD) measured by LD method depends a great deal on not only optical detector configuration and calculation procedure but also on the system of sample loading into the measuring zone. From this fact, the validation of PSA by LD method should be done using reference particles (RP), whose size distribution is better to have a range over one decade of size, according to ISO 13320-1. For this purpose, the Association of Powder Process Industry and Engineering, Japan (APPIE) distribute the spherical barium titanate glass particles as RP of JIS Z 8900-1, whose size ranges are 1 - 10 µm (MBP 1 - 10), 3 - 30 µm (MBP 3 - 30) and 10 - 100 µm (MBP 10 - 100). This paper shows why LD method needs to check its performance by using RP, and then reports the results of the round robin test of two kinds of RP (MBP 1 - 10 and MBP 10 - 100) and silica RP candidate with 0.1 1.0 µm size measured by LD instruments, which was conducted by the Technical Group of Measurement and Control in APPIE. PSD results measured by LD instruments were almost same as each other for both RP samples. MBP 1 - 10 sample was well dispersed in water without detergent, but a few drops of detergent sometimes needed for dispersing MBP 10 - 100 sample. For MBP 1 - 10 sample, PSD by LD method was slightly smaller than that measured by scanning electro microscopy (SEM) or electro sensing zone (ESZ) methods. For MBP 10 - 100 sample, PSD by LD method agreed well with that by SEM or ESZ methods. Silica sample can be supplied to the users as the dry powder, which can be re-dispersed in water with small amount of surfactant. From the results of the round robin test using silica sample, PSD measured by LD method roughly agreed with EM method.

scholarly journals Adequacy of laser diffraction for soil particle size analysis

PLoS ONE ◽  
2017 ◽  
Vol 12 (5) ◽  
pp. e0176510 ◽  
Author(s):  
Peter Fisher ◽  
Colin Aumann ◽  
Kohleth Chia ◽  
Nick O'Halloran ◽  
Subhash Chandra
Keyword(s):  
Particle Size ◽  
Particle Size Analysis ◽  
Laser Diffraction ◽  
Soil Particle ◽  
Size Analysis ◽  
Soil Particle Size

Particle size analysis by laser diffraction

2004 ◽  
Vol 232 (1) ◽  
pp. 63-73 ◽  
Author(s):  
Simon J. Blott ◽  
Debra J. Croft ◽  
Kenneth Pye ◽  
Samantha E. Saye ◽  
Helen E. Wilson
Keyword(s):  
Particle Size ◽  
Particle Size Analysis ◽  
Laser Diffraction ◽  
Size Analysis

Size Reduction of Clay Particles in Nanometer Dimensions

2002 ◽  
Vol 740 ◽  
Author(s):  
Gopinath Mani ◽  
Qinguo Fan ◽  
Samuel C. Ugbolue ◽  
Isabelle M. Eiff
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Specific Surface ◽  
Size Distribution ◽  
Research Work ◽  
Particle Size Analysis ◽  
Laser Diffraction ◽  
Size Analysis ◽  
Clay Particles ◽  
Nano Size

ABSTRACTThis research work focuses on combining ball milling and ultrasonication to produce nano-size clay particles. Our work also emphasizes on increasing the specific surface area of montmorillonite clay particles by reducing the particle size to nanometer dimensions. We have characterized the as-received clay particles by using particle size analysis based on laser diffraction and found that the size of the clay particles is not consistent and the particle size distribution is very broad. However, after the unique treatment and processing, the clay particles were obtained in nanometer dimensions with narrowed particle size distribution.

scholarly journals Particle size distributions by laser diffraction – Part 1: Sensitivity of granular matter strength to analytical operating procedures

2009 ◽  
Vol 1 (1) ◽  
pp. 93-141 ◽  
Author(s):  
F. Storti ◽  
F. Balsamo
Keyword(s):  
Particle Size ◽  
Carbonate Platform ◽  
Granular Matter ◽  
High Strength ◽  
Particle Size Analysis ◽  
Laser Diffraction ◽  
Size Analysis ◽  
Pump Speed ◽  
Strength Material ◽  
Set Up

Abstract. We tested laser diffraction particle size analysis in poorly coherent carbonate platform cataclastic breccias and unfaulted quartz-rich eolian sands, representing low- and high-strength granular materials, respectively. We used two different instruments with different sample dispersion and pumping systems and several wet and dry analytical procedures that included different pump speeds, measure precision tests with and without sample ultrasonication, and different dispersant liquids. Results of our work indicate that high strength material is not strongly affected by analytical operating procedures, whereas low strength material is very sensitive to the pump speed, ultrasonication intensity, and measurement run time. To reduce such a data variability, we propose a workflow for analytical tests preliminary to the set up of the most appropriate SOP.

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