scholarly journals Characteristics of the Laser-Induced Breakdown Detection of Colloidal Nanoparticles for Determining Particle Size

10.5772/34339 ◽  
2012 ◽  
Author(s):  
E.C. Jung ◽  
H.R. Cho
Keyword(s):  
Particle Size ◽  
Colloidal Nanoparticles ◽  
Laser Induced Breakdown

Multi-energy calibration and sample fusion as alternatives for quantitative analysis of high silicon content samples by laser-induced breakdown spectrometry

2019 ◽  
Vol 34 (8) ◽  
pp. 1701-1707 ◽  
Author(s):  
Alexandrina A. C. Carvalho ◽  
Larissa A. Cozer ◽  
Maciel S. Luz ◽  
Lidiane C. Nunes ◽  
Fábio R. P. Rocha ◽  
...  
Keyword(s):  
Particle Size ◽  
Quantitative Analysis ◽  
Size Effects ◽  
Silicon Content ◽  
Energy Calibration ◽  
Laser Induced Breakdown Spectroscopy ◽  
Complex Samples ◽  
Matrix Interferences ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Calibration aiming at quantitative analysis of complex samples is one of the most difficult issues in laser-induced breakdown spectroscopy (LIBS) due to matrix interferences, heterogeneity, and sample particle size effects.

Synthesis, characterization and particle size distribution of TiO2 colloidal nanoparticles

2011 ◽  
Vol 384 (1-3) ◽  
pp. 254-261 ◽  
Author(s):  
Zareen Abbas ◽  
Jenny Perez Holmberg ◽  
Anna Karin Hellström ◽  
Magnus Hagström ◽  
Johan Bergenholtz ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Colloidal Nanoparticles

scholarly journals Physico-Chemical Characterization Of Silt Prepared From Bijoypur Soil

2013 ◽  
Vol 39 (1) ◽  
pp. 53-60 ◽  
Author(s):  
TSA Islam ◽  
Y Zaker ◽  
MA Hossain ◽  
MS Islam
Keyword(s):  
Particle Size ◽  
Significant Proportion ◽  
Chemical Characterization ◽  
Zero Point ◽  
Xrd Analysis ◽  
Breakdown Spectroscopy ◽  
Physico Chemical ◽  
Laser Induced Breakdown ◽  
Ft Ir ◽  
Scanning Electron

Silt obtained from fractionated Bijoypur soil based on particle size (53~140?m) was characterized by SEM (Scanning electron microscopy), LIBS (Laser induced breakdown spectroscopy), XRD (X-Ray diffraction) and FT-IR (Fourier transform infra-red spectroscopy). pHzpc (Zero point charge pH) of silt was also determined by titrimetric method. The scanning electron micrograph of silt was taken in two different magnifications. Micrographs show that the surface of silt is slightly homogenic in nature and the particle size varied between 50 and 100 ?m. Elemental analysis of silt was performed by LIBS. According to this Fe, Si, Ti, Cu, Zn and Na are present in silt. XRD analysis indicates that silt fraction of Bijoypur soil is closely similar to kaolinite but it contains significant proportion of quartz. FT-IR analysis shows the presence of Zn=O, OH, Al-O-Si, Fe-O, Al-OH and Si-O bonds. The pHzpc value of silt was obtained as 6.39 ± 0.02 indicating neutrality of the surface. J. Asiat. Soc. Bangladesh, Sci. 39(1): 53-60, June 2013 DOI: http://dx.doi.org/10.3329/jasbs.v39i1.16033

Total Phosphorus Determination in Soils Using Laser-Induced Breakdown Spectroscopy: Evaluating Different Sources of Matrix Effects

2020 ◽  
Vol 75 (1) ◽  
pp. 22-33 ◽  
Author(s):  
Sara Sánchez-Esteva ◽  
Maria Knadel ◽  
Rodrigo Labouriau ◽  
Gitte H. Rubæk ◽  
Goswin Heckrath
Keyword(s):  
Particle Size ◽  
Total Phosphorus ◽  
Matrix Effects ◽  
Chemical Form ◽  
Laser Induced Breakdown Spectroscopy ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Phosphorus Determination

Laser-induced breakdown spectroscopy (LIBS) is a potential alternative to wet chemical methods for total soil phosphorus determination, but matrix effects related to physical and chemical sample properties need to be further understood. The aim of this study was to explore matrix effects linked to particle size distribution and chemical form of phosphorus on LIBS response and the ability of LIBS to predict total phosphorus in a range of different soil types. Univariate calibration curves were developed by spiking the soils with increasing doses of phosphorus, and limits of detection for LIBS determined phosphorous (P) (LIBS-P) were calculated. Different particle size distributions in otherwise identical soils were obtained by four milling treatments and effects of chemical form of phosphorus were examined by spiking soils with identical amounts of phosphorus in different chemical compounds. The LIBS-P response showed a high correlation (R2 > 0.99) with total phosphorus for all soils. Yet, the sensitivity of LIBS differed significantly among soils, as the slope of the calibration curves increased with increasing sand content, resulting in estimated limits of detection of 10 mg kg−1 for the sandiest and 122 mg · kg−1 for the most clayey soils. These limits indicate that quantitative evaluation of total phosphorus in sandy and loamy sandy soils by LIBS is feasible, since they are lower than typical total phosphorus concentrations in soil. A given milling treatment created different particle size distributions depending on soil type, and consequently different LIBS-P results. Thus, procedures that specify the required degree of homogenization of soil samples prior to analysis are needed. Sieving after milling could be an option, but that should be tested. The soils spiked with Fe(III) phosphate, potassium phosphate and phytic acid had similar LIBS-P, except for soils with hydroxyapatite, which resulted in markedly lower response. These results suggested that matrix effects related to the chemical nature of phosphorus would be minor for non-calcareous soils in humid regions, where apatites comprise only a small fraction of total phosphorus. Strategies to overcome matrix effects related to particle size and content of apatite-phosphorus by combining multivariate models and soil type groupings should be further investigated.

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