Investigation on the dynamic characteristics of LIBS for heavy metal Mn in liquid matrix

Du, Caigan; Yang, Chao; Zhang, Mingxu

doi:10.1016/j.ijleo.2018.11.165

Cited by 5 publications

(1 citation statement)

References 14 publications

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“…Laser-induced breakdown spectroscopy (LIBS) is a well-developed technique that relies on direct measurements of spectral line emissions from laser-induced plasma. Compared with other techniques, such as atomic absorption spectroscopy and inductively coupled plasma emission spectroscopy, LIBS can facilitate convenient, remote, fast, noncontact, and reliable in situ measurements of sample contents and concentrations, 1 – 5 which has been widely applied for trace element analyses in gas, 6 , 7 liquid, 8 – 15 or solid 16 – 21 samples. Nevertheless, as LIBS is implemented in aqueous solutions, there still exist great challenges in steering efficient laser ablation to generate plasmas of sufficiently long lifetimes as well as enhancing plasma excitations to improve detection sensitivities.…”

Section: Introductionmentioning

confidence: 99%

Detection of trace metals in water by filament- and plasma-grating-induced breakdown spectroscopy

Shi

et al. 2023

Adv. Photon. Nexus

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Filament-and plasma-grating-induced breakdown spectroscopy (F-GIBS) was demonstrated as an efficient technique for sensitive detection of metals in water, where plasma gratings were established through synchronized nonlinear interaction of two noncollinear filaments and an additional filament was generated with another fs laser beam propagating along their bisector. A water jet was constructed vertically to the three coplanar filaments, overcoming side effects from violent plasma explosion and bubble generation. Three distinct regimes of different mechanisms were validated for nonlinear couplings of the third filament with plasma gratings. As the third filament was temporally overlapped with the two noncollinear filaments in the interaction zone, all the three filaments participated in synchronous nonlinear interaction and plasma grating structures were altered by the addition of the third filament. As the third filament was positively or negatively delayed, the as-formed plasma gratings were elongated by the delayed third filament, or plasma gratings were formed in the presence of plasma expansion of the ahead third filament, respectively. Using F-GIBS for trace metal detection in water, significant spectral line enhancements were observed.

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