The Potential of Compact Libs System with Multi-Pulse Nd:YAG Laser for Bacteria Identification

Flores, Alejandro Ponce; Sánchez, A.; Villarreal, A. E.; Sauz, F. G. Rendón; Ponce, L.; Flores, T.

doi:10.4236/jbise.2015.83020

Cited by 7 publications

(4 citation statements)

References 13 publications

(15 reference statements)

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“…A key factor when studying the types and sources of INPs is their composition 11 , 12 . Recent studies have also demonstrated the potential of composition analysis methods in identifying pathogens 13 , 14 . As the particles are scarce in both environments, the composition analysis should be conducted on a single particle level.…”

Section: Introductionmentioning

confidence: 99%

Elemental analysis of single ambient aerosol particles using laser-induced breakdown spectroscopy

Heikkilä

Rostedt

Toivonen

et al. 2022

Sci Rep

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Analysing the composition of aerosol particles is essential when studying their health effects, sources and atmospheric impacts. In many environments the relevant particles occur in very low concentrations, meaning that their analysis requires efficient single particle techniques. Here we introduce a novel method to analyse the elemental composition of single aerosol particles sampled directly from the aerosol phase using size amplification aided aerosol charging (SAAC), linear electrodynamic quadrupole (LEQ) and laser-induced breakdown spectroscopy. We present results of the charging and focusing efficiencies of the SAAC and of the LEQ, and a proof-of-concept of the analysis method. The proof-of-concept test series was conducted with particle diameters down to 300 nm, sampled directly from the aerosol phase. The method shows unprecedented performance for spectroscopic submicron particle analysis from arbitrarily low concentrations and has exceptional potential for a portable analysis platform for various applications in the field of aerosol research.

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Section: Introductionmentioning

confidence: 99%

Elemental analysis of single ambient aerosol particles using laser-induced breakdown spectroscopy

Heikkilä

Rostedt

Toivonen

et al. 2022

Sci Rep

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“…In the latter case, an analysis of the intensities ratios of emission lines in the LIBS spectra can serve as an indicator of the level of a pathology. Using the LIBS technology, it is possible to identify various types of fungi and bacteria [16,17]. For example, the Candida LIBS spectrum reveals the elements C, N, H, O, and CN [17].…”

Section: Introductionmentioning

confidence: 99%

1540 nm LIBS Investigation of Healthy and Pathological Human Nails

Беликов

Smirnov

Tavalinskaya

et al. 2020

J-BPE

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The paper discusses the possibility of using laser-induced breakdown spectroscopy (LIBS) as a method for the diagnosis of human nail onychomycosis. LIBS spectra obtained with excitation of plasma on the surface of healthy and onychomycotic nails by pulses of Q switched Yb, Er: Glass laser radiation with a wavelength of 1540 nm were compared for the first time. The spectrum of onychomycotic nail contained unique lines additional to characteristic spectral lines of healthy nails. These additional lines disappeared after 90 days of sample storage in air at room temperature 20 ± 3 °C.

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“…Much effort has been put into improving the capabilities of LIBS in recent years, and this is the focus of our work. Some researchers have used multi-pulse 31,32 , magnetic confinement 33,34 , space constraints 34,35 , inert gases 35 , and other techniques to improve LIBS signals and the sensitivity of LIBS method. These methods require the LIBS system to be modified and are not suitable for determining harmful chemicals on the surfaces of fruit and vegetables.…”

Section: Introductionmentioning

confidence: 99%

Detecting and Mapping Harmful Chemicals in Fruit and Vegetables Using Nanoparticle-Enhanced Laser-Induced Breakdown Spectroscopy

Zhao

et al. 2019

Sci Rep

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Residues of harmful chemicals in fruit and vegetables pose risks to human health. Ordinary laser-induced breakdown spectroscopy (LIBS) techniques are unsatisfactory for detecting harmful chemicals in fruit and vegetables. In this study, we applied metal nanoparticles to fruit and vegetables samples to improve the ability of LIBS to detect trace pesticide and heavy metal residues in the samples. The nanoparticle-enhanced LIBS technique gave pesticide residue detection limits for fruit and vegetables two orders of magnitude lower than achieved using standard LIBS and heavy metal detection limits markedly better than achieved using standard LIBS. We used the nanoparticle-enhanced LIBS technique to study the distributions of harmful chemicals in vegetable leaves. We found that heavy metals are distributed unevenly in edible plant leaves, the heavy metal concentrations being higher in the veins than in the mesophyll.

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The Potential of Compact Libs System with Multi-Pulse Nd:YAG Laser for Bacteria Identification

Cited by 7 publications

References 13 publications

Elemental analysis of single ambient aerosol particles using laser-induced breakdown spectroscopy

Elemental analysis of single ambient aerosol particles using laser-induced breakdown spectroscopy

1540 nm LIBS Investigation of Healthy and Pathological Human Nails

Detecting and Mapping Harmful Chemicals in Fruit and Vegetables Using Nanoparticle-Enhanced Laser-Induced Breakdown Spectroscopy

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