Investigation of lamp chemical composition by laser-induced breakdown spectroscopy

Author(s):  
N.H. Chen ◽  
H.G. Adler ◽  
W.P. Lapatovich
2014 ◽  
Author(s):  
Łukasz Łazarek ◽  
Arkadiusz J. Antończak ◽  
Michał R. Wójcik ◽  
Paweł E. Kozioł ◽  
Bogusz Stępak ◽  
...  

2019 ◽  
Vol 215 ◽  
pp. 08003
Author(s):  
Christoph Gerhard ◽  
Jörg Hermann

In this contribution, the surface uniformity of classically-manufactured fused silica windows was investigated via laser-induced breakdown spectroscopy. It is shown that for all investigated samples a comparatively high aluminium content was found at the edge of the surface with respect to its centre. This contamination can be attributed to residues from lapping and polishing agents and leads to a mentionable non-uniformity of the surface in terms of chemical composition and optical properties, respectively.


2018 ◽  
Vol 33 (2) ◽  
pp. 240-250 ◽  
Author(s):  
V. F. Lebedev ◽  
M. K. Rabchinskii ◽  
M. S. Kozlyakov ◽  
D. N. Stepanov ◽  
A. V. Shvidchenko ◽  
...  

The LIBS technique is a valuable and effective tool for quality control and the characterization of various nanocarbon structures.


2018 ◽  
Vol 72 (6) ◽  
pp. 921-932 ◽  
Author(s):  
Ariane Maciel Neiva ◽  
Edenir Rodrigues Pereira-Filho

Synthetic leather samples from Brazil and Paraguay were evaluated in this study using three spectroscopy techniques: inductively coupled plasma optical emission spectrometry (ICP-OES), laser-induced breakdown spectroscopy (LIBS), and wavelength dispersive X-ray fluorescence (WDXRF). The obtained information from each technique was separately inspected with principal component analysis (PCA). The concentrations of the elements determined in the synthetic leathers using ICP-OES decreased in the following order: Ca > Cr > Mg > Ba > Pb > Al > Fe > Zn > Sb > Ni with a concentration range below the limit of quantification (<LOQ, case of Ni) to 112 233 mg kg−1 (case of Ca). Additionally, Cu, As, Sr, Ti, Cd, Mn, Co, and Ni were present in only few samples in a concentration range from <LOQ to 163 mg kg−1. Principal component analysis was the tool used to evaluate the samples from their chemical content obtained quantitatively using ICP-OES and qualitatively using LIBS or WDXRF spectra. The results showed that the association of PCA with spectroscopic techniques was satisfactory for data inspection of synthetic leathers according to the chemical composition. Laser-induced breakdown spectroscopy and WDXRF were able to identify the presence of toxic elements like Cr (LIBS and WDXRF) and Pb (WDXRF).


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