Breakdown Pattern of Hydrocarbons by Laser Breakdown Time-of-flight Mass Spectrometry

Wang, Zhen Zhen; Deguchi, Yoshihiro; Yan, Junjie; Liu, Ji Ping

doi:10.1080/00387010.2014.959135

Cited by 3 publications

(2 citation statements)

References 32 publications

(35 reference statements)

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“…In order to measure the trace elements, the laser breakdown process combined with TOFMS has been employed in the detection of trace species. 53,54 Fragmentation of partial breakdown is the major interference to target atomic ion signals. Measurements employing breakdowns induced by 532 nm and 1064 nm lasers display the results without interference of fragmentations compared to that using 266 nm in the mass region of 30-300 m/z due to the higher photon energy, which induces the photolysis occurring at lower laser power and partial fragmentation.…”

Section: Special Issuementioning

confidence: 99%

Applications of Laser-Induced Breakdown Spectroscopy and Laser Breakdown Time-of-Flight Mass Spectrometry to Thermal Power Plants

Wang

Deguchi

Yan

et al. 2014

The Review of Laser Engineering

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Section: Special Issuementioning

confidence: 99%

Applications of Laser-Induced Breakdown Spectroscopy and Laser Breakdown Time-of-Flight Mass Spectrometry to Thermal Power Plants

Wang

Deguchi

Yan

et al. 2014

The Review of Laser Engineering

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“…Due to their high toxicity and environmental persistence, many efforts for real-time monitoring of these organic pollutants from the principal emission sources have been recently realized [17,18,19,20,21]. Unfortunately, the objective of constant monitoring of the potential sources of emission and the possibility of recognizing each single congener in a complex mixture have not yet been fulfilled.…”

Section: Introductionmentioning

confidence: 99%

Dioxin and Related Compound Detection: Perspectives for Optical Monitoring

Patrizi

Cumis

Viciani

et al. 2019

IJMS

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Dioxins and related compounds are environmental xenobiotics that are dangerous to human life, due to the accumulation and persistence in the environment and in the food chain. Cancer, reproductive and developmental issues, and damage to the immune system and endocrine system are only a few examples of the impact of such substances in everyday life. For these reasons, it is fundamental to detect and monitor these molecules in biological samples. The consolidated technique for analytical evaluation is gas chromatography combined with high-resolution mass spectrometry. Nowadays, the development of mid-infrared optical components like broadband laser sources, optical frequency combs, high performance Fourier-transform infrared spectroscopy, and plasmonic sensors open the way to new techniques for detection and real time monitoring of these organic pollutants in gaseous or liquid phase, with sufficient sensitivity and selectivity, and in short time periods. In this review, we report the latest techniques for the detection of dioxins, furans and related compounds based on optical and spectroscopic methods, looking at future perspectives.

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Propane decomposition and conversion into other hydrocarbons using metal target assisted laser induced plasma

et al. 2017

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It is shown that the propane molecules are strongly decomposed in the metal assisted laser induced plasma based on the nano-catalytic adsorption. A Q-Switched Nd:YAG laser is employed to irradiate the propane gas filled in the control chamber in the presence of the reactive metals such as Ni, Fe, Pd, and Cu in order to study the effect of catalysts during the decomposition. The catalytic targets simultaneously facilitate the plasma formation and the decomposition events leading to generate a wide distribution of the light and heavy hydrocarbon molecules, mainly due to the recombination processes. Fourier transform infrared spectroscopy and gas chromatography instruments support the findings by detecting the synthetic components. Furthermore, the optical emission spectroscopy of the laser induced plasma emissions realizes the real time monitoring of the reactions taking place during each laser shot. The subsequent recombination events give rise to the generation of a variety of the hydrocarbon molecules. The dissociation rate, conversion ratio, selectivity, and yield as well as the performance factor arise mainly from the catalytic effects of the metal species. Moreover, the ablation rate of the targets of interest is taken into account as a measure of the catalytic reactivity due to the abundance of the metal species ablated from the target. This leads to assess the better performance factor for Pd among four metal catalysts of interest during propane decomposition. Finally, the molecules such as ethane and ethylene are identified as the stable abundant species created during the successive molecular recombination processes.

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Breakdown Pattern of Hydrocarbons by Laser Breakdown Time-of-flight Mass Spectrometry

Cited by 3 publications

References 32 publications

Applications of Laser-Induced Breakdown Spectroscopy and Laser Breakdown Time-of-Flight Mass Spectrometry to Thermal Power Plants

Applications of Laser-Induced Breakdown Spectroscopy and Laser Breakdown Time-of-Flight Mass Spectrometry to Thermal Power Plants

Dioxin and Related Compound Detection: Perspectives for Optical Monitoring

Propane decomposition and conversion into other hydrocarbons using metal target assisted laser induced plasma

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