Influence of Planar Mirror Confinement and Temperature Control upon the Elemental Analysis of Soil by Laser-Induced Breakdown Spectroscopy

Meng, Yan; Li, Honglian; Wang, Yitong; Lv, Heshuai; Wang, Chun; Wang, Fan; Fang, Luyuan

doi:10.1080/00032719.2023.2185250

Cited by 9 publications

(3 citation statements)

References 21 publications

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“…By studying the effect of KCl addition and sample temperature, Li et al 151 found that signal intensities for Al and Cd in lake sediment were enhanced (1.6- and 2-fold, respectively) in the presence of 15% KCl at 180 °C compared with analysis at room temperature without the additive. Meng et al 152 achieved similar improvements (2.5 to 2.8-fold increase in signal for Al, Cd, Fe and Pb in soil) at 180 °C with planar mirror confinement (an approach in which the sample is ablated between two parallel mirrors to compress the plasma plume into a smaller volume) rather than by chemical addition. Amador-Mejia 153 also recommended sample heating but to a higher temperature (400 ± 20 °C), together with re-excitation of the laser plasma using a high-voltage discharge.…”

Section: Analysis Of Soils Plants and Related Materialsmentioning

confidence: 89%

Atomic spectrometry update – a review of advances in environmental analysis

Bacon,

Butler,

Cairns

et al. 2024

J. Anal. At. Spectrom.

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Section: Analysis Of Soils Plants and Related Materialsmentioning

confidence: 89%

Atomic spectrometry update – a review of advances in environmental analysis

Bacon,

Butler,

Cairns

et al. 2024

J. Anal. At. Spectrom.

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“…Meng et al studied the combination of LIBS, flat mirror, and temperature control enhancement methods. The results showed that the enhancement factors of Cd, Fe, Al, and Pb in soil were 2.50, 2.78, 2.66, and 2.47, respectively [25]. Based on the time evolution of LIBS constrained by a cylindrical cavity and the action of nanoparticles, Ren et al observed that when the acquisition delay time is 1ls, the plasma generated by the alloy sample exhibits the highest enhancement factor under the dual action.…”

Section: Journal Of the European Opticalmentioning

confidence: 99%

Detection of zinc in pig feed based on the cavities of different shapes combined with LIBS

Li,

Huang,

et al. 2024

J. Eur. Opt. Society-Rapid Publ.

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Considering the serious risks posed by the heavy metals present in pig diets, monitoring and controlling the amount of these metals is crucial. The laser-induced breakdown spectroscopy (LIBS) is a promising technique for performing elemental analysis due to its unique advantages, such as rapid, in situ, nondestructive, and online detection of various minerals. In order to improve the detection accuracy and detection limit (LOD) of elements, the spatial constraint combined with laser-induced breakdown spectroscopy (CC-LIBS) is used to detect the quantity of zinc in pig feed and achieve the detection of samples with lower concentrations. Zn I 480.86 nm is selected as the characteristic spectral line, and the effects of different two-dimensional (cylindrical) and three-dimensional (hemispherical, truncated cone) cavities on the enhancement factor are compared under different. The results show that the optimal conditions include a circular constrained cavity D5H2, a delay time of 2.08, and an enhancement factor of 3.01 associated with the analytical spectral line. The detection limit of zinc in samples under CC-LIBS is 62.67 mg/kg (the recommended quantity of zinc in pig diet mentioned in the safe use of feed additives is 43-80 mg/kg), which is 35.65% lower than that under the LIBS (97.39 mg/kg). Therefore, this work provides a new test basis and idea for the detection of zinc in pig feed.

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“…In addition, the sample temperature has a significant effect on the laser ablation crater (mass and volume) and rate, 18–23 signal intensity, 24 signal-to-noise ratio (SNR), 25 plasma properties (dynamic, morphology, temperature, and electron density), 18,21,26–33 experimental conditions (defocusing amount, laser energy, and delay time), 34–37 self-absorption, 38 and detection performance (repeatability, accuracy, and sensitivity) 27,39–42 of LIBS. These have been verified on a solid sample ( e.g.…”

Section: Introductionmentioning

confidence: 99%