Article
Instruments & Instrumentation
Saba Mushtaq, Khurram Siraj, Muhammad Shahzad Abdul Rahim, Sami Ulhaq, Qaneeta Younas, Waqas Asad, Nimra Shahzad, Anwar Latif
Summary: In this study, laser-induced kohl plasma was generated near a transverse magnetic field of 0.8 T. The emission spectra analysis revealed that most of the emission line intensities decreased due to the field, with a few lines showing an increase. Plasma parameters such as electron temperature, electron number density, and plasma frequency were found to increase. The analysis of the kohl emission spectrum detected several elements, including lead and chromium, which may have chronic health effects.
APPLIED SPECTROSCOPY
(2023)
Article
Thermodynamics
Brendan McGann, Timothy M. Ombrello, David M. Peterson, Ez Hassan, Stephen D. Hammack, Campbell D. Carter, Tonghun Lee, Hyungrok Do
Summary: Nanosecond-gated laser-induced breakdown spectroscopy (n-LIBS) was used to quantify fuel mole fraction in a high-speed combustor, showing unexpected results in low concentration fuel regions. An improved direct spectrum matching calibration matrix and comparison between different laser systems reduced measurement uncertainty and demonstrated insensitivity to specific lasers. Comparison between n-LIBS and numerical results provided good overall agreement, highlighting the importance of n-LIBS in diagnostic model testing.
COMBUSTION AND FLAME
(2021)
Article
Chemistry, Analytical
Shengen Zhu, Wenhao Zhang, Guangdong Song, Yadong Li, Binxin Hu, Feng Zhu, Hua Zhang, Yubin Wei, Tengfei Sun, Jing Tang
Summary: Coal quality analysis is crucial for the rational and sustainable utilization of coal resources. This study proposes a method using LIBS to reconstruct PCs, improving the regression metrics and establishing quantitative models for ash content, volatile matter, and calorific value. The accuracy of the models is significantly improved, and the feasibility and effectiveness of LIBS-based analysis for coal quality detection are demonstrated.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Spectroscopy
Pravin Kumar Tiwari, Narayan Behera, R. K. Singh, H. C. Joshi
Summary: This paper presents a comparative study of laser-induced breakdown spectroscopy (LIBS) of brass and aluminium targets under different experimental configurations and conditions. The aim is to improve the detection sensitivity of the LIBS signal by introducing a magnetic field and colliding plasmas. The results show that colliding plasma with a magnetic field significantly enhances the intensities of observed LIBS lines. Furthermore, LIBS analysis of the colliding plasma in the presence of a magnetic field demonstrates a drastic improvement in detection sensitivity. Calibration-free elemental analysis is also performed for comparative evaluation.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Wei Ke, Xiaohua Wang, Minyuan Chen, Huan Yuan, Aijun Yang, Jifeng Chu, Dingxin Liu, Mingzhe Rong
Summary: Laser-induced breakdown spectroscopy (LIBS) is a useful technique for quantitative detection based on the properties of laser-induced plasma (LIP) at local thermodynamic equilibrium (LTE). The influence of ambient pressure on the spatial-temporal evolution of LTE for LIP is still not well understood, and the mechanism of this influence remains unclear.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Instruments & Instrumentation
John Lucchi, Dan Gluck, Sidney Rials, Larry Tang, Matthieu Baudelet
Summary: This study demonstrates the successful classification of 32 different samples using the elemental profile of tire rubber, analyzed by principal component analysis combined with linear discriminant analysis. With a classification accuracy close to 99%, it shows the growing use of laser-induced breakdown spectroscopy as a technique for forensic analysis of tire rubber, opening the path for its use as forensic evidence.
APPLIED SPECTROSCOPY
(2021)
Article
Spectroscopy
Ryan B. Anderson, Olivier Forni, Agnes Cousin, Roger C. Wiens, Samuel M. Clegg, Jens Frydenvang, Travis S. J. Gabriel, Ann Ollila, Susanne Schroder, Olivier Beyssac, Erin Gibbons, David S. Vogt, Elise Clave, Jose-Antonio Manrique, Carey Legett, Paolo Pilleri, Raymond T. Newell, Joseph Sarrao, Sylvestre Maurice, Gorka Arana, Karim Benzerara, Pernelle Bernardi, Sylvain Bernard, Bruno Bousquet, Adrian J. Brown, Cesar Alvarez-Llamas, Baptiste Chide, Edward Cloutis, Jade Comellas, Stephanie Connell, Erwin Dehouck, Dorothea M. Delapp, Ari Essunfeld, Cecile Fabre, Thierry Fouchet, Cristina Garcia-Florentino, Laura Garcia-Gomez, Patrick Gasda, Olivier Gasnault, Elisabeth M. Hausrath, Nina L. Lanza, Javier Laserna, Jeremie Lasue, Guillermo Lopez, Juan Manuel Madariaga, Lucia Mandon, Nicolas Mangold, Pierre-Yves Meslin, Anthony E. Nelson, Horton Newsom, Adriana L. Reyes-Newell, Scott Robinson, Fernando Rull, Shiv Sharma, Justin Simon, Pablo Sobron, Imanol Torre Fernandez, Arya Udry, Dawn Venhaus, Scott M. McLennan, Richard Morris, Bethany Ehlmann
Summary: The SuperCam instrument on the Perseverance rover uses laser induced breakdown spectroscopy (LIBS) to analyze the chemical composition of targets on Mars. Preprocessing and optimization models are applied to achieve accurate quantitative results.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Instruments & Instrumentation
David M. Surmick, Leon Taleh, Noureddine Melikechi
Summary: The impact of altering laser focusing conditions on laser-induced breakdown spectroscopy experiments was investigated in both ambient Earth laboratory and simulated Martian atmospheres. Results showed that the peak emissions of ionic species occur when the laser plasma is initiated with a focused spot within the sample in ambient Earth laboratory air, while atomic emissions have peak intensities several millimeters deeper into the sample. In simulated Martian atmospheres, atomic emissions peak when the laser is focused within the sample, while ionic emissions have peak intensities near the surface of the sample.
APPLIED SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Christoph Gerhard, Aya Taleb, Frederic Pelascini, Jorg Hermann
Summary: This study quantitatively analyzed trace contaminants on optical glass surfaces induced by manufacturing using LIBS. The contaminants were found to originate from the polishing process, and depth-resolved measurements were conducted by recording successive laser pulses on the same sites. The sensitivity-improved calibration-free LIBS approach demonstrated here can be applied to quantify surface contaminations in various technological applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Maximilian Weiss, Zuzana Gajarska, Hans Lohninger, Martina Marchetti-Deschmann, Georg Ramer, Bernhard Lendl, Andreas Limbeck
Summary: The growing importance of fluoropolymers in high-tech applications and green technologies has led to an increased demand for their characterization. This study presents a novel approach for quantitative mapping of fluorine in fluoropolymer samples using laser-induced breakdown spectroscopy (LIBS). The approach is based on monitoring molecular emission bands arising from fluorine-containing molecules. The study evaluates two techniques - spray coating and sputter coating - for their effects on sensitivity and spatial resolution in elemental mapping.
ANALYTICA CHIMICA ACTA
(2022)
Article
Spectroscopy
Jorg Hermann, Christoph Gerhard, Milos Burger, Valentin Craciun, Frederic Pelascini
Summary: Direct elemental analysis of materials using calibration-free laser-induced breakdown spectroscopy has attracted significant interest since 1999. However, the multitude of different approaches and their validation in various experimental conditions make it challenging to assess the achievable performance of this innovative analytical technique. This paper critically reviews the development of calibration-free LIBS, highlights the progress made so far, and estimates its analytical performance. Solutions are proposed to enhance accuracy by addressing sources of measurement uncertainty, thereby bringing calibration-free LIBS to the level of fully recognized analytical methods.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Instruments & Instrumentation
Huaiqing Qin, Ziyu Yu, Zhimin Lu, Zhuliang Yu, Shunchun Yao
Summary: This paper proposes a method to improve the performance of laser-induced breakdown spectroscopy (LIBS) quantitative analysis by using data uncertainty. The method preserves some data uncertainty in the calibration data matrix to optimize the calibration model, resulting in better accuracy and robustness compared to conventional methods.
APPLIED SPECTROSCOPY
(2022)
Article
Spectroscopy
G. C. Gomes, F. O. Borges, F. F. Borghi, G. H. Cavalcanti, C. M. S. Martins, V Palleschi, A. Mello
Summary: The study investigated a new method for measuring the Ca/P ratio of hydroxyapatite, showing that it could serve as a substitute for elemental analysis with technical advantages such as rapid measurements and easy automation.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Spectroscopy
Samira Selmani, Nessrine Mohamed, Ismail Elhamdaoui, Jordan Fernandes, Paul Bouchard, Marc Constantin, Mohamad Sabsabi, Francois Vidal
Summary: This study demonstrates the applicability of laser-induced breakdown spectroscopy (LIBS) as a large-scale, high-performance analyzer for assessing the palladium content in ore. The analysis reveals the significant heterogeneity of palladium distribution on the ore's surface.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Yue Su, Mingxing Yang
Summary: With the development of the gem trade, the origin information of nephrite has become an important consideration and heavily influences its price. However, accurate origin determination is difficult due to similarities in appearance, composition, and spectroscopy. Through the use of LA-ICP-MS and LDA strategies, the origin of nephrite can be determined with high accuracy. The study also analyzes the performance of the three LDA strategies and discusses their potential applications. Evaluation: 8/10
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)