Direct spectral analysis of tea samples using 266 nm UV pulsed laser-induced breakdown spectroscopy and cross validation of LIBS results with ICP-MS

Gondal, M.A.; Habibullah, Yusuf B.; Baig, Umair; Oloore, Luqman E.

doi:10.1016/j.talanta.2016.02.030

Cited by 72 publications

(20 citation statements)

References 24 publications

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“…Ferreira et al 179 used LIBS for the determination of Ca in breakfast cereals. Gondal et al 180 studied by LIBS the composition of tea samples, nding a good agreement with ICP-MS measurements. Also Zhang et al 181 performed LIBS analysis on Chinese tea leaves, with the purpose of optimizing the optimal spectral lines for classication and quality control.…”

Section: Food and Feed Industrymentioning

confidence: 71%

Industrial applications of laser-induced breakdown spectroscopy: a review

et al. 2020

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Section: Food and Feed Industrymentioning

confidence: 71%

Industrial applications of laser-induced breakdown spectroscopy: a review

et al. 2020

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“…A pulsed Nd:YAG laser of typical wavelength 1064 nm with nanosecond pulse width is widely utilized excitation source for LIBS due to its reliability, ease of use, and its high peak pulse energies. The second and third harmonic wavelengths of 532, 355, and 266 nm from Nd:YAG laser using nonlinear process are also used as excitation sources (Miziolek et al 2006;Gondal et al, 2014Gondal et al, , 2016aGondal et al, , b, 2018. Femtosecond (fs) lasers have also been used in LIBS for many applications (Cremers and Radziemski, 2006;Chin 2009).…”

Section: Principles and Fundamentals Of Libsmentioning

confidence: 99%

Laser-induced breakdown spectroscopy (LIBS): a novel technology for identifying microbes causing infectious diseases

et al. 2018

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With the advent of improved experimental techniques and enhanced precision, laser-induced breakdown spectroscopy (LIBS) offers a robust tool for probing the chemical constituents of samples of interest in biological sciences. As the interest continues to grow rapidly, the domain of study encompasses a variety of applications vis-à-vis biological species and microbes. LIBS is basically an atomic emission spectroscopy of plasma produced by the high-power pulsed laser which is tightly focused on the surface of any kinds of target materials in any phase. Due to its experimental simplicity, and versatility, LIBS has achieved its high degree of interest particularly in the fields of agricultural science, environmental science, medical science, forensic sciences, and biology. It has become a strong and sensitive elemental analysis tool as compared to the traditional gold standard techniques. As such, it offers a handy, rapid, and flexible elemental measurement of the sample compositions, together with the added benefits of less cumbersome sample preparation requirements. This technique has extensively been used to detect various microorganisms, extending the horizon from bacteria, molds, to yeasts, and spores on surfaces, while also being successful in sensing diseasecausing viruses. LIBS-based probe has also enabled successful detection of bacteria in agriculture as well. In order for good quality processing of food, LIBS is also being used to detect and identify bacteria such as Salmonella enteric serovar typhimurium that causes food contamination. Differences in soil bacteria isolated from different mining sites are a very good indicator of relative environmental soil quality. In this connection, LIBS has effectively been employed to discriminate both the inter-and intra-site differences of the soil quality across varying mining sites. Therefore, this article summarizes the basic theory and use of LIBS for identifying microbes causing serious agricultural and environmental infectious diseases.

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“…LIBS and XRF have been employed for the determination of macronutrients and micronutrients in different plant leaves, for example, sugarcane, cannabis , black tea, tomato, medicinal plants, orange, lemon, wheat, soybean, cotton, maize, and grass . However, in all the above mentioned studies, prior to analysis, the leaves were either detached from the plants or pelletized after washing, drying, and grinding …”

Section: Introductionmentioning

confidence: 99%

Direct determination of mineral nutrients in soybean leaves under vivo conditions by portable X‐ray fluorescence spectroscopy

et al. 2019

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A portable energy dispersive X‐ray fluorescence (XRF) spectrometer furnished with an Rh X‐ray tube was evaluated for the determination of macronutrients and micronutrients in soybean leaves (Glycine max L.). XRF instrumental parameters were optimized in a univariate way, and emission intensities were measured for 60 s and under vacuum for macronutrients, and during 180 s, under air, and 305 μm Al/25.4 μm Ti filter, for micronutrients. Fresh and dried leaves were irradiated, and it was possible to identify P, K, Ca, S, Mn, Fe, Cu, and Zn Kα emission lines. For comparative purpose, the samples were also microwave assisted, digested and analyzed by inductively coupled plasma optical emission spectrometry. In general, linear correlations between K, Ca, Mn, Fe, Cu, and Zn concentrations in the tested samples and the corresponding portable XRF (pXRF) intensities were obtained. The linear correlation coefficients (R2) ranged from 0.42 to 0.86. In addition, the detection limits were suitable for plant nutrient diagnosis. It is demonstrated that pXRF is a simple and powerful tool for analysis of plant materials.

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Direct spectral analysis of tea samples using 266 nm UV pulsed laser-induced breakdown spectroscopy and cross validation of LIBS results with ICP-MS

Cited by 72 publications

References 24 publications

Industrial applications of laser-induced breakdown spectroscopy: a review

Industrial applications of laser-induced breakdown spectroscopy: a review

Laser-induced breakdown spectroscopy (LIBS): a novel technology for identifying microbes causing infectious diseases

Direct determination of mineral nutrients in soybean leaves under vivo conditions by portable X‐ray fluorescence spectroscopy

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