Two-step procedure for trace element analysis in food via calibration-free laser-induced breakdown spectroscopy

Chen, Chia-Ting; Bănaru, Daniela; Sarnet, T.; Hermann, J.

doi:10.1016/j.sab.2018.10.011

Cited by 32 publications

(24 citation statements)

References 44 publications

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“…The LTE condition of high collision rates requires large densities of charged particles and the associated continuum radiation hinders the observation of weak line emission from trace elements. Recently, we proposed an approach to overcome this drawback [ 198 ]. Considering the dependence of LTE validity on the atomic structure, we can distinguish between elements that “easily” or “hardly” reach the equilibrium state [ 199 ].…”

Section: Laser-induced Breakdown Spectroscopy (Libs)mentioning

confidence: 99%

“…The state of partial LTE provides the quantification of minor and metal trace elements. The method was applied to quantify trace elements in seafood caught in the bay of Marseille [ 198 ]. The presence of arsenic (a few tens of ppm) and cadmium (ppm level) was attributed to industrial pollution ( Figure 17 ).…”

Section: Laser-induced Breakdown Spectroscopy (Libs)mentioning

confidence: 99%

“…The color scale from green to red indicates the degree of equilibrium. Adapted from Reference [ 198 ].…”

Section: Figurementioning

confidence: 99%

“…The presence of arsenic (a few tens of ppm) and cadmium (ppm level) was attributed to industrial pollution (Figure 17). [198].…”

Section: Fast and Sensitive Elemental Analysis Of Tiny Volumes Via Calibration-free Libsmentioning

confidence: 99%

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Short-Pulse Lasers: A Versatile Tool in Creating Novel Nano-/Micro-Structures and Compositional Analysis for Healthcare and Wellbeing Challenges

et al. 2021

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Driven by flexibility, precision, repeatability and eco-friendliness, laser-based technologies have attracted great interest to engineer or to analyze materials in various fields including energy, environment, biology and medicine. A major advantage of laser processing relies on the ability to directly structure matter at different scales and to prepare novel materials with unique physical and chemical properties. It is also a contact-free approach that makes it possible to work in inert or reactive liquid or gaseous environment. This leads today to a unique opportunity for designing, fabricating and even analyzing novel complex bio-systems. To illustrate this potential, in this paper, we gather our recent research on four types of laser-based methods relevant for nano-/micro-scale applications. First, we present and discuss pulsed laser ablation in liquid, exploited today for synthetizing ultraclean “bare” nanoparticles attractive for medicine and tissue engineering applications. Second, we discuss robust methods for rapid surface and bulk machining (subtractive manufacturing) at different scales by laser ablation. Among them, the microsphere-assisted laser surface engineering is detailed for its appropriateness to design structured substrates with hierarchically periodic patterns at nano-/micro-scale without chemical treatments. Third, we address the laser-induced forward transfer, a technology based on direct laser printing, to transfer and assemble a multitude of materials (additive structuring), including biological moiety without alteration of functionality. Finally, the fourth method is about chemical analysis: we present the potential of laser-induced breakdown spectroscopy, providing a unique tool for contact-free and space-resolved elemental analysis of organic materials. Overall, we present and discuss the prospect and complementarity of emerging reliable laser technologies, to address challenges in materials’ preparation relevant for the development of innovative multi-scale and multi-material platforms for bio-applications.

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Section: Laser-induced Breakdown Spectroscopy (Libs)mentioning

confidence: 99%

Section: Laser-induced Breakdown Spectroscopy (Libs)mentioning

confidence: 99%

“…The color scale from green to red indicates the degree of equilibrium. Adapted from Reference [ 198 ].…”

Section: Figurementioning

confidence: 99%

“…The presence of arsenic (a few tens of ppm) and cadmium (ppm level) was attributed to industrial pollution (Figure 17). [198].…”

Section: Fast and Sensitive Elemental Analysis Of Tiny Volumes Via Calibration-free Libsmentioning

confidence: 99%

See 2 more Smart Citations

Short-Pulse Lasers: A Versatile Tool in Creating Novel Nano-/Micro-Structures and Compositional Analysis for Healthcare and Wellbeing Challenges

et al. 2021

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“…Here, even better analytical performances than the established methods for thin film analysis were obtained. Most recently, further sensitivity improvement by a sequential measurement process has led to notable enhancement of the detection limit and the possibility of calibration-free quantification of trace element contamination [10,11].…”

mentioning

confidence: 99%

Towards Laser-Based Calibration-Free Quantification of Trace Elements

Gerhard¹

2021

Optics

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LIBS Analysis of Optical Surfaces and Thin Films

Gerhard¹,

Hermann

2023

Laser Induced Breakdown Spectroscopy (LIBS)

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Elemental analyses of thin films and optical surfaces with complex compositions are challenging as the standard analytical techniques based on measurement calibration are difficult to apply. In this chapter, we show that calibration-free laser-induced breakdown spectroscopy presents a powerful solution, enabling rapid quantitative analyses of multi-elemental thin films or tiny surface volumes of optical materials with high analytical performances. Examples are given for classically polished optical glass and a nickel-chromium-molybdenum alloy film of 150 nm thickness. Thus, broadband spectra, recorded under experimental conditions that enable simple and accurate modeling of plasma emission, are processed via a calibration-free approach based on the calculation of the spectral radiance of a plasma in local thermodynamic equilibrium to deduce the elemental composition. The validation via energy-dispersive X-ray spectroscopy, inductively coupled plasma atomic emission spectroscopy, and Rutherford backscattering spectrometry illustrates that calibration-free LIBS is not only a promising tool, but already a reliable analytical technique.

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Two-step procedure for trace element analysis in food via calibration-free laser-induced breakdown spectroscopy

Cited by 32 publications

References 44 publications

Short-Pulse Lasers: A Versatile Tool in Creating Novel Nano-/Micro-Structures and Compositional Analysis for Healthcare and Wellbeing Challenges

Short-Pulse Lasers: A Versatile Tool in Creating Novel Nano-/Micro-Structures and Compositional Analysis for Healthcare and Wellbeing Challenges

Towards Laser-Based Calibration-Free Quantification of Trace Elements

LIBS Analysis of Optical Surfaces and Thin Films

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