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Improving Calibration Strategy for LIBS Heavy Metals Analysis in Agriculture Applications. PHOTONICS 2021. [DOI: 10.3390/photonics8120563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A new calibration procedure, known as mapping conditional-calibration laser-induced breakdown spectroscopy (LIBS), has been suggested to improve analysis results for heterogeneous samples. The procedure is based on LIBS elemental mapping, followed by signal conditioning in every sampling spot to skip signal outliers, then by finalizing the calibration curve construction. The suggested mapping conditional calibration procedure was verified for zinc analysis in soybean grist samples. The laser parameters correspond to those of the hand-held LIBS instrument in order to estimate the influence of sample surface heterogeneity under on-site analysis conditions. The laser spot (60 μm) was equal to or smaller than the typical size of grist particles (40–500 μm) but laser crater dimensions were significantly greater and varied widely (150–450 μm). The LIBS mapping of different spectral signals (atomic and ionic lines for major and minor components) was achieved. Elemental maps were normalized to achieve signal maps that were conditionally spotted to skip signal outliers. It was demonstrated that the suggested mapping conditional-calibration LIBS provided 15 ppm RMSECV for zinc determination in heterogeneous samples, which is typical for agricultural products.
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Al-Kattan A, Grojo D, Drouet C, Mouskeftaras A, Delaporte P, Casanova A, Robin JD, Magdinier F, Alloncle P, Constantinescu C, Motto-Ros V, Hermann J. Short-Pulse Lasers: A Versatile Tool in Creating Novel Nano-/Micro-Structures and Compositional Analysis for Healthcare and Wellbeing Challenges. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:712. [PMID: 33809072 PMCID: PMC8001552 DOI: 10.3390/nano11030712] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/04/2021] [Accepted: 03/08/2021] [Indexed: 12/21/2022]
Abstract
Driven by flexibility, precision, repeatability and eco-friendliness, laser-based technologies have attracted great interest to engineer or to analyze materials in various fields including energy, environment, biology and medicine. A major advantage of laser processing relies on the ability to directly structure matter at different scales and to prepare novel materials with unique physical and chemical properties. It is also a contact-free approach that makes it possible to work in inert or reactive liquid or gaseous environment. This leads today to a unique opportunity for designing, fabricating and even analyzing novel complex bio-systems. To illustrate this potential, in this paper, we gather our recent research on four types of laser-based methods relevant for nano-/micro-scale applications. First, we present and discuss pulsed laser ablation in liquid, exploited today for synthetizing ultraclean "bare" nanoparticles attractive for medicine and tissue engineering applications. Second, we discuss robust methods for rapid surface and bulk machining (subtractive manufacturing) at different scales by laser ablation. Among them, the microsphere-assisted laser surface engineering is detailed for its appropriateness to design structured substrates with hierarchically periodic patterns at nano-/micro-scale without chemical treatments. Third, we address the laser-induced forward transfer, a technology based on direct laser printing, to transfer and assemble a multitude of materials (additive structuring), including biological moiety without alteration of functionality. Finally, the fourth method is about chemical analysis: we present the potential of laser-induced breakdown spectroscopy, providing a unique tool for contact-free and space-resolved elemental analysis of organic materials. Overall, we present and discuss the prospect and complementarity of emerging reliable laser technologies, to address challenges in materials' preparation relevant for the development of innovative multi-scale and multi-material platforms for bio-applications.
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Affiliation(s)
- Ahmed Al-Kattan
- Aix-Marseille University, CNRS, LP3 UMR 7341, Campus de Luminy, Case 917, CEDEX 09, 13288 Marseille, France; (D.G.); (A.M.); (P.D.); (A.C.); (P.A.); (C.C.); (J.H.)
| | - David Grojo
- Aix-Marseille University, CNRS, LP3 UMR 7341, Campus de Luminy, Case 917, CEDEX 09, 13288 Marseille, France; (D.G.); (A.M.); (P.D.); (A.C.); (P.A.); (C.C.); (J.H.)
| | - Christophe Drouet
- CIRIMAT, Université de Toulouse, UMR 5085 CNRS/Toulouse INP/UT3 Paul Sabatier, Ensiacet, 4 allée E. Monso, CEDEX 04, 31030 Toulouse, France;
| | - Alexandros Mouskeftaras
- Aix-Marseille University, CNRS, LP3 UMR 7341, Campus de Luminy, Case 917, CEDEX 09, 13288 Marseille, France; (D.G.); (A.M.); (P.D.); (A.C.); (P.A.); (C.C.); (J.H.)
| | - Philippe Delaporte
- Aix-Marseille University, CNRS, LP3 UMR 7341, Campus de Luminy, Case 917, CEDEX 09, 13288 Marseille, France; (D.G.); (A.M.); (P.D.); (A.C.); (P.A.); (C.C.); (J.H.)
| | - Adrien Casanova
- Aix-Marseille University, CNRS, LP3 UMR 7341, Campus de Luminy, Case 917, CEDEX 09, 13288 Marseille, France; (D.G.); (A.M.); (P.D.); (A.C.); (P.A.); (C.C.); (J.H.)
| | - Jérôme D. Robin
- Aix-Marseille University, INSERM, MMG, Marseille Medical Genetics, 13385 Marseille, France; (J.D.R.); (F.M.)
| | - Frédérique Magdinier
- Aix-Marseille University, INSERM, MMG, Marseille Medical Genetics, 13385 Marseille, France; (J.D.R.); (F.M.)
| | - Patricia Alloncle
- Aix-Marseille University, CNRS, LP3 UMR 7341, Campus de Luminy, Case 917, CEDEX 09, 13288 Marseille, France; (D.G.); (A.M.); (P.D.); (A.C.); (P.A.); (C.C.); (J.H.)
| | - Catalin Constantinescu
- Aix-Marseille University, CNRS, LP3 UMR 7341, Campus de Luminy, Case 917, CEDEX 09, 13288 Marseille, France; (D.G.); (A.M.); (P.D.); (A.C.); (P.A.); (C.C.); (J.H.)
| | - Vincent Motto-Ros
- Institut Lumière Matière UMR 5306, Université Lyon 1—CNRS, Université de Lyon, 69622 Villeurbanne, France;
| | - Jörg Hermann
- Aix-Marseille University, CNRS, LP3 UMR 7341, Campus de Luminy, Case 917, CEDEX 09, 13288 Marseille, France; (D.G.); (A.M.); (P.D.); (A.C.); (P.A.); (C.C.); (J.H.)
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Képeš E, Gornushkin I, Pořízka P, Kaiser J. Tomography of double-pulse laser-induced plasmas in the orthogonal geometry. Anal Chim Acta 2020; 1135:1-11. [PMID: 33070845 DOI: 10.1016/j.aca.2020.06.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/18/2020] [Accepted: 06/23/2020] [Indexed: 11/29/2022]
Abstract
The temporal evolution of laser-induced plasmas is studied in the orthogonal double-pulse arrangement. Both the pre-ablation mode (an air spark is induced above the sample surface prior to the ablation pulse) and the re-heating mode (additional energy is delivered into the plasma created by the ablation pulse) is considered. The plasmas are investigated in terms of the temporal evolution of their electron density, temperature, and volume. The plasma volumes are determined using a time-resolved tomography technique based on the Radon transformation. The reconstruction is carried out for both white-light and band-pass filtered emissivities. The white-light reconstruction corresponds to the overall size of the plasmas. On the other hand, the band-pass emissivity reconstruction shows the distribution of the atomic sample species (Cu I). Moreover, through spectrally resolved tomographic reconstruction, the spatial homogeneity of the electron density and temperature of the plasmas is also investigated at various horizontal slices of the plasmas. Our results show that the pre-ablation geometry yields a more temporally stable and spatially uniform plasma, which could be beneficial for calibration-free laser-induced breakdown spectroscopy (LIBS) approaches. On the contrary, the plasma generated in the re-heating geometry exhibits significant variations in electron density and temperature along its vertical axis. Overall, our results shed further light on the mechanisms involved in the LIBS signal enhancement using double-pulse ablation.
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Affiliation(s)
- Erik Képeš
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, CZ-61200 Brno, Czech Republic.
| | - Igor Gornushkin
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Strasse 11, 12489, Berlin, Germany
| | - Pavel Pořízka
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, CZ-61200 Brno, Czech Republic
| | - Jozef Kaiser
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, CZ-61200 Brno, Czech Republic
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Jabbar A, Akhtar M, Mahmood S, Ahmed R, Baig MA. Determination of Major Inorganic Nutrients in Maize Tissues by Calibration-Free Laser Induced Breakdown Spectroscopy. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1705477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Abdul Jabbar
- Mirpur University of Science and Technology, Mirpur, Azad Kashmir
- National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
| | - Mahmood Akhtar
- Mirpur University of Science and Technology, Mirpur, Azad Kashmir
- National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
| | - Shaukat Mahmood
- Mirpur University of Science and Technology, Mirpur, Azad Kashmir
| | - Rizwan Ahmed
- National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
| | - Muhammad Aslam Baig
- National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
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de Morais CP, Barros AI, Bechlin MA, Silva TV, Júnior DS, Senesi GS, Crespi MS, Ribeiro CA, Gomes Neto JA, Ferreira EC. Laser-induced breakdown spectroscopy determination of K in biochar-based fertilizers in the presence of easily ionizable element. Talanta 2018; 188:199-202. [DOI: 10.1016/j.talanta.2018.05.089] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 05/23/2018] [Accepted: 05/24/2018] [Indexed: 11/29/2022]
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Hedwig R, Lahna K, Lie ZS, Pardede M, Kurniawan KH, Tjia MO, Kagawa K. Application of picosecond laser-induced breakdown spectroscopy to quantitative analysis of boron in meatballs and other biological samples. APPLIED OPTICS 2016; 55:8986-8992. [PMID: 27857279 DOI: 10.1364/ao.55.008986] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This report presents the results of laser-induced breakdown spectroscopy (LIBS) study on biological and food samples of high water content using a picosecond (ps) laser at low output energy of 10 mJ and low-pressure helium ambient gas at 2 kPa. Evidence of excellent emission spectra of various analyte elements with very low background is demonstrated for a variety of samples without the need of sample pretreatment. Specifically, limits of detection in the range of sub-ppm are obtained for hazardous Pb and B impurities in carrots and meatballs. This study also shows the inferior performance of LIBS using a nanosecond laser and atmospheric ambient air for a soft sample of high water content and thereby explains its less successful applications in previous attempts. The present result has instead demonstrated the feasibility and favorable results of employing LIBS with a ps laser and low-pressure helium ambient gas as a less costly and more practical alternative to inductively coupled plasma for regular high sensitive inspection of harmful food preservatives and environmental pollutants.
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