scholarly journals Calcium determination in biochar-based fertilizers by laser-induced breakdown spectroscopy using sodium as internal standard

2017 ◽  
Vol 134 ◽  
pp. 370-373 ◽  
Author(s):  
Carla Pereira de Morais ◽  
Ariane Isis Barros ◽  
Dário Santos Júnior ◽  
Clóvis Augusto Ribeiro ◽  
Marisa Spirandeli Crespi ◽  
...  
Keyword(s):  
Internal Standard ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Calcium Determination

Research on the Method to Select Internal Standard Reference for Laser-Induced Breakdown Spectroscopy

2014 ◽  
Vol 51 (10) ◽  
pp. 103003 ◽  
Author(s):  
尚丽平 Shang Liping ◽  
李文宏 Li Wenhong ◽  
武志翔 Wu Zhixiang ◽  
王芮雯 Wang Ruiwen ◽  
周强 Zhou Qiang
Keyword(s):  
Internal Standard ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

scholarly journals Feasibility of laser-induced breakdown spectroscopy (LIBS) as an at-line validation tool for calcium determination in infant formula

Food Control ◽  
2017 ◽  
Vol 78 ◽  
pp. 304-310 ◽  
Author(s):  
Xavier Cama-Moncunill ◽  
Maria Markiewicz-Keszycka ◽  
Yash Dixit ◽  
Raquel Cama-Moncunill ◽  
Maria P. Casado-Gavalda ◽  
...  
Keyword(s):  
Infant Formula ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Validation Tool ◽  
Calcium Determination

scholarly journals Application of Laser Induced Breakdown Spectroscopy in Soil Element Analysis of Watershed

2018 ◽  
Vol 246 ◽  
pp. 01114
Author(s):  
C. P. Chen ◽  
L. Hei ◽  
S. C. Yu ◽  
W. L. Chen ◽  
M. X. Cai
Keyword(s):  
Quantitative Analysis ◽  
Elemental Analysis ◽  
Matrix Effects ◽  
Rapid Development ◽  
Internal Standard ◽  
Laser Induced Breakdown Spectroscopy ◽  
Element Analysis ◽  
Breakdown Spectroscopy ◽  
Analysis Methods ◽  
Laser Induced Breakdown

With the rapid development of spectroscopy technology, laser induced breakdown spectroscopy (LIBS) has become the focus of elemental analysis technology in recent years. With its advantages of non-destructive testing, rapid and multi-element detection, LIBS has been successfully applied to the analysis of geochemical characteristics of soil elements in river basins. The application of LIBS technology in soil elemental analysis of watershed is reviewed in detail. The accuracy of LIBS technology in soil element analysis is studied with the Masha River Basin as the research area. On this basis, the key problems in the process of soil element analysis, such as spectral enhancement methods and quantitative analysis methods, were analyzed. The analysis results show that the accuracy of elemental analysis between LIBS and traditional chemical methods is not much different, but the analysis time of LIBS method is shorter. Methods such as MLR, PLSR, and internal standard methods can improve the fit of the calibration curve and reduce the quantitative analysis error. By changing parameters such as laser energy and delay time, the spectral intensity can be enhanced to reduce the effects of matrix effects. In the process of elemental analysis, the effects of soil physical and chemical parameters should be considered comprehensively, and appropriate quantitative analysis methods should be adopted to improve the accuracy of the analysis results.

scholarly journals Methodology for the Implementation of Internal Standard to Laser-Induced Breakdown Spectroscopy Analysis of Soft Tissues

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 900
Author(s):  
Anna Šindelářová ◽  
Pavel Pořízka ◽  
Pavlína Modlitbová ◽  
Lucie Vrlíková ◽  
Kateřina Kiss ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Soft Tissues ◽  
Internal Standard ◽  
Laser Induced Breakdown Spectroscopy ◽  
Biological Research ◽  
Elemental Content ◽  
Ambient Atmosphere ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Signal Response

The improving performance of the laser-induced breakdown spectroscopy (LIBS) triggered its utilization in the challenging topic of soft tissue analysis. Alterations of elemental content within soft tissues are commonly assessed and provide further insights in biological research. However, the laser ablation of soft tissues is a complex issue and demands a priori optimization, which is not straightforward in respect to a typical LIBS experiment. Here, we focus on implementing an internal standard into the LIBS elemental analysis of soft tissue samples. We achieve this by extending routine methodology for optimization of soft tissues analysis with a standard spiking method. This step enables a robust optimization procedure of LIBS experimental settings. Considering the implementation of LIBS analysis to the histological routine, we avoid further alterations of the tissue structure. Therefore, we propose a unique methodology of sample preparation, analysis, and subsequent data treatment, which enables the comparison of signal response from heterogenous matrix for different LIBS parameters. Additionally, a brief step-by-step process of optimization to achieve the highest signal-to-noise ratio (SNR) is described. The quality of laser–tissue interaction is investigated on the basis of the zinc signal response, while selected experimental parameters (e.g., defocus, gate delay, laser energy, and ambient atmosphere) are systematically modified.

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