Approaching the ppb detection limits for copper in water using laser induced breakdown spectroscopy

Tawfik, Walid; Sawaf, S

doi:10.1117/12.2053957

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…During the last decade, LIBS has been deployed for a variety of applications. For instance, Naeem et al used a 532 nm Nd: YAG pulsed laser to delve into the properties of copper plasma [22], while Walid Tawfik et al employed LIBS to assess contamination by heavy elements in environmental samples under ambient air conditions [23][24][25][26].…”

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confidence: 99%

Evaluation of Heavy Metal Presence in Agricultural Samples of Lactuca sativa and Trifolium alexandrinum Using Picosecond Laser-Induced Breakdown Spectroscopy and Flame Atomic Absorption Spectroscopy in Banha and Giza Governorates, Egypt

Fayek,

Tawfik,

Khalafallah

et al. 2023

Minerals

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This pioneering study utilizes Flame Atomic Absorption Spectroscopy (FAAS) and Picosecond Laser-Induced Breakdown Spectroscopy (Ps-LIBS) to quantify heavy metal contents in samples of Lactuca sativa L. and Trifolium alexandrinum L. collected from Banha and Giza, Egypt for the first time. In order to enhance the performance of Ps-LIBS, laser parameters were carefully optimized. Expressly, laser energy was set to 100 ± 5% J/cm², pulse duration was calibrated to 170 picoseconds, and 1064 nm Nd: YAG pulses were employed. This optimization facilitated the creation of linear LIBS calibration curves, a crucial element in ensuring precise elemental quantification and bolstering the overall analytical reliability. The assessment of pollution indices revealed concerningly high levels of copper, nickel, and cadmium consistently across all study sites. Lactuca sativa L. and Trifolium alexandrinum L. also demonstrated multiple metals’ bioaccumulation factors (>1), further underscoring the potential health risks associated with copper, nickel, and cadmium contents. Given these findings, it is imperative to recommend constructing a dedicated wastewater treatment facility to address Al Mansouria village’s environmental challenges in the Giza governorate.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Heavy Metal Presence in Agricultural Samples of Lactuca sativa and Trifolium alexandrinum Using Picosecond Laser-Induced Breakdown Spectroscopy and Flame Atomic Absorption Spectroscopy in Banha and Giza Governorates, Egypt

Fayek,

Tawfik,

Khalafallah

et al. 2023

Minerals

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“…Elements This work Other literature studies Lines used in other literature studies (nm) Comments Cd 0.029 0.067 [41] Cd I 228.802 Electrochemistry enrichment 0.0031 [25] Cd I 228.802 Electrochemistry enrichment 4.43 [42] Cd II 226.502 Water 0.420 [21] Cd I 508.58 Chemical replacement Cr 0.087 0.004 44 [43] Cr I 425.43 Hydrogel-based solidification 1.26 [18] Cr I 425.43 Liquid jets 0.33 [44] Cr I 425.43 Montmorillonite enrichment 0.025 [21] Cr I 520.84 Chemical replacement 0.001 29 [23] Cr I 425. 43 Membrane separation Cu 0.012 0.016 [45] Cu I 324.75 Enrichment with aluminum target 1.5 [46] Enrichment with filter paper 0.131 [47] Enrichment with wood 0.25 [21] Chemical replacement 0.002 59 [23] Membrane separation Ni 0.083 0.0017 [14] Ni I 341.476 Electrochemistry enrichment 0.28 [32] Enrichment with graphite planchets Pb 0.125 0.035 [33] Pb I 405.78 Electrochemistry enrichment 2.93 [48] Ultrasonic atomizer 0.118 [21] Chemical replacement Zn 0.049 13.67 [43] ZnII 206.20 Water…”

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Detection of heavy metals in water samples by laser-induced breakdown spectroscopy combined with annular groove graphite flakes

Zhao

2018

Plasma Sci. Technol.

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The use of laser-induced breakdown spectroscopy (LIBS) for the analysis of heavy metals in water samples is investigated. Some factors such as splashing, surface ripples, extinction of emitted intensity, and a shorter plasma lifetime will influence the results if the water sample is directly measured. In order to avoid these disadvantages and the 'coffee-ring effect', hydrophilic graphite flakes with annular grooves were used for the first time to enrich and concentrate heavy metals in water samples before being analyzed by LIBS. The proposed method and procedure have been evaluated to concentrate and analyze cadmium, chromium, copper, nickel, lead, and zinc in a water sample. The correlation coefficients were all above 0.99. The detection limits of 0.029, 0.087, 0.012, 0.083, 0.125, and 0.049 mg l −1 for Cd, Cr, Cu, Ni, Pb, and Zn, respectively, were obtained in samples prepared in a laboratory. With this structure, the heavy metals homogeneously distribute in the annular groove and the relative standard deviations are all below 6%. This method is very convenient and suitable for online in situ analysis of heavy metals.

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Recent Advances in the Investigation of Textiles Using Laser-Induced Breakdown Spectroscopy (LIBS)

Tawfik

2022

Preservation and Restoration Techniques for Ancient Egyptian Textiles

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Textiles were documented via several traditional wet chemical analysis and other spectroscopic techniques, like flame-based inductively coupled plasma atomic emission spectroscopy (ICP-AES) and flame optical emission (OE) spectroscopy. These techniques were applied for accurate investigation studies like forensic duplication check of documents and others. Unfortunately, these methods are considered distractive methods, and unsafe in the use of aggressive chemicals. The last problems encourage scientists to seek a safe and non-destructive method like LIBS. In the spectrochemical analysis based on LIBS technique, a pulsed laser beam is focused on a target material, then a breakdown of the sample occurs, and eventually results in the formation of a transient and highly energetic plasma. In this chapter, a review describes in detail the use of LIBS as an elemental analytical technique for the determination of elements in field applications in documentary identifications, whether for forensic or archaeology applications.

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Approaching the ppb detection limits for copper in water using laser induced breakdown spectroscopy

Cited by 3 publications

References 11 publications

Evaluation of Heavy Metal Presence in Agricultural Samples of Lactuca sativa and Trifolium alexandrinum Using Picosecond Laser-Induced Breakdown Spectroscopy and Flame Atomic Absorption Spectroscopy in Banha and Giza Governorates, Egypt

Evaluation of Heavy Metal Presence in Agricultural Samples of Lactuca sativa and Trifolium alexandrinum Using Picosecond Laser-Induced Breakdown Spectroscopy and Flame Atomic Absorption Spectroscopy in Banha and Giza Governorates, Egypt

Detection of heavy metals in water samples by laser-induced breakdown spectroscopy combined with annular groove graphite flakes

Recent Advances in the Investigation of Textiles Using Laser-Induced Breakdown Spectroscopy (LIBS)

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