Spectroscopic determination of the stark broadening parameters of Al (I) 305.007 nm in atmospheric air using picosecond time-resolved LIPS

Fikry, Mohamed; Tawfik, Walid; Omar, Mahmoud

doi:10.1016/j.molstruc.2022.134796

Cited by 8 publications

(9 citation statements)

References 27 publications

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“…The Ps-LIBS setup employed in this study builds upon the established technology previously described by our research group (Fikry et al 2023). The laser system utilized in this experimental configuration is an ultrafast high-power picosecond Nd:YAG Q-switched laser (SL334, Eksapla, Lithuania), boasting a wavelength of 1064 nm, a pulse duration of 170 ps, and an operating repetition rate of 5 Hz.…”

Section: Libs Setupmentioning

confidence: 99%

“…This analytical methodology employed an ultrafast, high-power picosecond Nd:YAG Q-switched laser system (SL334, Eksapla, Lithuania), operational at a wavelength of 1064 nm, a pulse duration of 170 ps, and a repetition rate of 5 Hz. The spectra yielded intricate data, essential for a comprehensive understanding of the clover's elemental composition and structural properties (Fikry et al 2023).…”

Section: Libs Spectrum Studiesmentioning

confidence: 99%

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WITHDRAWN: Advancing Environmental Monitoring: Unveiling Heavy Metal Contamination with Calibration-Free Picosecond Laser-Induced Breakdown Spectroscopy (CF-PS-LIBS)

Fayek,

Tawfik,

KhalafAllah

et al. 2023

Preprint

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Elevated concentrations of heavy metals in environmental matrices are linked to substantial toxicity hazards, impacting human health and ecosystem wellbeing. In this research, Calibration-Free Picosecond Laser-Induced Breakdown Spectroscopy (CF-PS-LIBS) is introduced for determining concentrations of Fe, Zn, Mn, Ni, Pb, and Cr in the roots and shoots of clover plants collected from villages in the Banha and Giza governorates of Egypt. CF-PS-LIBS spectra, generated by a 1064 nm Q-switched Nd: YAG laser with a pulse width of 170 ps and energy of 100 ± 5% J/cm², are analyzed to assess heavy metal content. The study leverages emission intensity and broadening associated with the Ca I characteristic lines at specified wavelengths to provide insights into plasma evolution. Linear variations in electron temperature (Te) and electron density (Ne) are observed in samples with heavy metal concentrations ranging from 0.11 to 0.17 mg/kg for Cr and 429.03 to 2259.51 mg/kg for Fe. Plasma Te escalates from approximately 6696.062 to 8957.761 K, while Ne increases from 0.914 × 10¹⁷ to 2.63 × 10¹⁷ cm⁻³. These Te and Ne fluctuations are distinctive markers for plasma characterization relative to specific heavy metal concentrations in clover samples. The application of CF-PS-LIBS is highlighted as a novel advancement in environmental monitoring, offering enhanced accuracy in spectrochemical analyses and contributing to developing effective remediation strategies for areas affected by heavy metal contamination.

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Section: Libs Setupmentioning

confidence: 99%

Section: Libs Spectrum Studiesmentioning

confidence: 99%

WITHDRAWN: Advancing Environmental Monitoring: Unveiling Heavy Metal Contamination with Calibration-Free Picosecond Laser-Induced Breakdown Spectroscopy (CF-PS-LIBS)

Fayek,

Tawfik,

KhalafAllah

et al. 2023

Preprint

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“…Figure 2 shows the schematic diagram of a high-accuracy laser-induced plasma spectroscopy system setup which depends on the ultrafast high-power picosecond laser and high-resolution picometer spectrometer. The details of the used Ps-LIPS setup have already been demonstrated elsewhere by our group (Fikry et al 2023) (Spectroscopy and Atomic 2023). Briefly, the experimental setup comprises a high-power, ultrafast Nd: YAG Q-switched laser (Model SL334, Eksapla, Lithuania), operating at a near-infrared wavelength of 1064 nm.…”

Section: Ps-lips Setupmentioning

confidence: 99%

WITHDRAWN: Ultrafast Picosecond Laser Spectroscopy and ICP-OES Assisted Calibration-free of Toxic Metal Concentrations in Contaminated Agricultural Soils

El-Saeed,

Tawfik,

Khalil

et al. 2023

Preprint

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Excess fertilizer and chemical use have contaminated soil with harmful heavy metals near the Abu-Zaabal facility in Egypt. This study pioneers an approach using picosecond laser-induced plasma spectroscopy (Ps-LIPS) and inductively coupled plasma optical emission spectrometry (ICP-OES) to quantify toxic metal levels without calibration constraints. A 100 mJ Nd: YAG laser with 170 picosecond pulses has been employed for the Ps-LIPS. Systematic soil sampling at six sites near the facility enabled Ps-LIPS to formulate unrestricted calibration-free curves for lead, cadmium, cobalt, zinc, iron, and nickel. Applying the Boltzmann distribution and plot methods anchored to calcium spectral lines determined plasma electron density and temperature under local thermodynamic equilibrium. Models were validated against ICP-OES, affirming Ps-LIPS with under 8% average relative error. Results revealed notable concentration variations contingent on the metal, sampling site, and orientation to the facility. This pioneering Ps-LIPS study demonstrates precise quantification of toxic metals in soils without prior calibration. It provides a pragmatic tool for contamination assessment, representing a seminal advance in environmental analytical methodology.

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“…The laser beam has a diameter of 24 mm and a divergence of 4 mrad. A plano-convex quartz mirror with a focal length of 10 cm was used to focus the beam on the sample on one wall of a 96-wall polypropylene plate at an angle of 45°from the laser axis center, 7,24,29 with Fig. 1 illustrating the LIPDT system setup.…”

Section: Laser-induced Photodynamic Therapy (Lipdt) Setupmentioning

confidence: 99%

“…Using optical bers, the laser light can be easily transported over long distances into internal tumors inside body cavities or through the lumen of needles into the illuminated tissue. 7,24,25 The thermal interaction of lasers is considered to be one of the signicant requirements of the laser light employed in LIPDT. 26 This study was designed to synthesize a new dapsone-based drug-like candidate (SBDMP).…”

Section: Introductionmentioning

confidence: 99%

Insight into novel anti-mucormycosis therapies: investigation of new anti-mucormycosis laser-induced photodynamic therapy based on a sulphone bis-compound loaded silica nanoemulsion

et al. 2023

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Spectroscopic determination of the stark broadening parameters of Al (I) 305.007 nm in atmospheric air using picosecond time-resolved LIPS

Cited by 8 publications

References 27 publications

WITHDRAWN: Advancing Environmental Monitoring: Unveiling Heavy Metal Contamination with Calibration-Free Picosecond Laser-Induced Breakdown Spectroscopy (CF-PS-LIBS)

WITHDRAWN: Advancing Environmental Monitoring: Unveiling Heavy Metal Contamination with Calibration-Free Picosecond Laser-Induced Breakdown Spectroscopy (CF-PS-LIBS)

WITHDRAWN: Ultrafast Picosecond Laser Spectroscopy and ICP-OES Assisted Calibration-free of Toxic Metal Concentrations in Contaminated Agricultural Soils

Insight into novel anti-mucormycosis therapies: investigation of new anti-mucormycosis laser-induced photodynamic therapy based on a sulphone bis-compound loaded silica nanoemulsion

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