Evaluation of minor element concentrations in potatoes using laser-induced breakdown spectroscopy

Quantitative analysis by laser-induced breakdown spectroscopy based on generalized curves of growth

“…A procedure, described in Section 4, is used to eliminate from the Cσ graph the data for which (τ l Δλ L ) z exceeds the model limit previously established. The use of a quantitative model limit that allows discarding data in the analytical procedure is also a distinctive feature of our method from previous approaches [3,4,[6][7][8][9]. Following the idea expressed previously, it should be stressed again that, for elements with strongly different ionization energies, a different value of the model limit or an additional criterion might be required.…”

“…For the majority of elements investigated in bauxites, mineral samples and laboratory air, agreement within 25% was achieved between estimated and certified values. A similar approach with a different calculation algorithm was used by Beldjilali et al [7] to evaluate the minor element concentrations in potatoes. Plasma temperature, electron density and the relative concentrations are adjusted to obtain the best agreement between measured and computed spectra.…”

“…Also, in [9], they have demonstrated the method on carbon-based materials from the inner wall of a fusion reactor. In [6][7][8], a model of uniform plasma is considered, whereas a plasma composed of two different uniform zones is used in [9] to account for the observed temperature gradient. Thus, setting a suitable plasma model is probably the most relevant and difficult issue in standardless methods.…”

Quantitative Analysis of Shilajit using Laser-Induced Breakdown Spectroscopy and Inductively Coupled Plasma/Optical Emission Spectroscopy

“…Laser-induced Breakdown Spectroscopy (LIBS) is used extensively for the quantitative as well as qualitative study of different materials [1][2][3][4]. Whenever laser pulses are focused on a solid target surface, breakdown of the laser irradiated part of target occurs.…”

Designed to Disperse

“…For example, this technique allows the detection of heavy metals in environmental samples [4] or minor element concentrations in food [5] by analysing the resulting laser-induced plasma and debris plume. Another novel method is the use of atmospheric pressure plasmas for radiation excitation [6].…”