Detector comparison for sulfur and chlorine detection with laser induced breakdown spectroscopy in the near-infrared-region

Weritz, Friederike; Schaurich, Dieter; Wilsch, Gerd

doi:10.1016/j.sab.2007.10.017

Cited by 53 publications

(19 citation statements)

References 27 publications

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“…Argon is well known for increasing the LIBS sensitivity [28] due to its ionisation potential, low enough to produce an argon plasma and higher than those of the elements of interest to increase their excitation. In this purpose, helium is also used for specific elements such as halogens for instance [29]. In liquid analysis, several authors [30,31] selected nitrogen as sheath gas.…”

Section: Liquid Jet Analysismentioning

confidence: 99%

Fast quantitative determination of platinum in liquid samples by laser-induced breakdown spectroscopy

et al. 2012

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The potential of laser-induced breakdown spectroscopy (LIBS) for the rapid determination of platinum in liquid silicone oils has been evaluated in the framework of on-line process control. A comparison of LIBS sensitivity between three setups designed for liquid analysis (static, liquid jet and flowing liquid) was performed using a 266 nm Nd/YAG laser irradiation. Best results were obtained using the flowing liquid setup and a similar limit of detection was obtained using the liquid jet. The effect of different buffer gases (Ar, He, N 2 , etc.) on the signal sensitivity was studied in liquid jet analysis and best values were obtained with a nitrogen sheath gas. Detection limits were in the 100 mg/kg range for both setups. Quantitative determination of platinum in real liquid samples was also investigated using both liquid jet and flowing liquid setups. Calibration curves were plotted for Pt with the liquid jet and the flowing liquid setups under optimised temporal acquisition parameters (delay time and gate width). A normalisation using a silicon line was applied and recovery ranged from 3 to 15 % for Pt in catalyst samples with both setups showing that LIBS is a sensitive and accurate method for online applications.

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Section: Liquid Jet Analysismentioning

confidence: 99%

Fast quantitative determination of platinum in liquid samples by laser-induced breakdown spectroscopy

et al. 2012

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“…Therefore, the special attention was paid to monitoring the emission of this triplet. It should be mentioned that these sulfur spectral lines (at 921.3, 922.8 and at 923.8 nm) were used for sulfur detection in building materials [35] as well as in gaseous samples and pressings [36].…”

Section: Oes Analysismentioning

confidence: 99%

Sulfur dioxide Plasma Treatment of the Clay (Laponite) Particles

Fatyeyeva

Poncin-Epaillard

2011

Plasma Chem Plasma Process

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Low temperature plasma treatment of the inorganic clay (Laponite) using sulfur dioxide (SO 2 ) as a process gas was carried out in order to graft the functional groups containing sulfur and oxygen (sulfonic acid groups) onto the inert clay surface. Conditions for SO 2 plasma modification were optimized by the measurement of the sulfur content as a function of the plasma power, gas flow rate and treatment time. It was found that the sulfur content increased with the increasing of the plasma power as well as the treatment time. Optical emission spectroscopy was presented in order to control the plasma phase and to characterize the different excitation processes of atomic species in SO 2 plasma under different discharge conditions. X-ray diffraction spectrometry, X-ray photoelectron spectroscopy, FTIR and thermal analysis measurements of grafted Laponite powder completed the characterization.

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“…In the current study, 56 an experiment was conducted for imaging salt diffusion in beef using a LIBS system combined with an 57 automatic sample chamber. Chlorine emission peaks are not easily resolvable under normal atmospheric 58 conditions due to interference with nitrogen (N) and oxygen (O) peaks, thus emission peaks related to 59 sodium (Na) were utilized to create salt diffusion images (Weritz et al, 2007). The aim of this study was 60 to illustrate the ability of LIBS as a novel chemical free technique for imaging NaCl diffusion in beef.…”

Section: Introduction 33mentioning

confidence: 99%

Introduction to laser induced breakdown spectroscopy imaging in food: Salt diffusion in meat

Dixit¹,

Casado-Gavalda²,

Cama-Moncunill³

et al. 2018

Journal of Food Engineering

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Detector comparison for sulfur and chlorine detection with laser induced breakdown spectroscopy in the near-infrared-region

Cited by 53 publications

References 27 publications

Fast quantitative determination of platinum in liquid samples by laser-induced breakdown spectroscopy

Fast quantitative determination of platinum in liquid samples by laser-induced breakdown spectroscopy

Sulfur dioxide Plasma Treatment of the Clay (Laponite) Particles

Introduction to laser induced breakdown spectroscopy imaging in food: Salt diffusion in meat

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