Quantitative determination of sulfur content in concrete with laser-induced breakdown spectroscopy

Weritz, Friederike; Ryahi, S.; Schaurich, Dieter; Taffe, Alexander; Wilsch, Gerd

doi:10.1016/j.sab.2005.05.036

Cited by 64 publications

(21 citation statements)

References 10 publications

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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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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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“…Few publications address the detection of S using LIBS. For example, S can be determined in concrete using the near-IR line (921.3 nm) [52,63]. Only relatively weak ionic lines in the range 400-600 nm can be used to analyze S in the spectral range of our spectrometer (200-800 nm).…”

Section: Determination Of Pb In Soil and S In Coalmentioning

confidence: 99%

Development of a laser-induced breakdown spectroscopy method for soil and ecological analysis (review)

et al. 2010

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The application of laser spectrochemical analysis to testing for basic compounds and nutritious/toxic elements in soil has been reviewed. A combined laser-spark approach has been applied for the rapid measurement of the carbon content in soil. Spectra have been excited both directly in a laser-ablation plume and by passing a pulsed electric discharge through the plume. The emission spectrum intensity in the combined plasma is considerably higher. The application of a complex of methods to carbon determination in soil has shown that in fact the data on the humus content usually obtained in agrochemical practice by a conventional method of carbon oxidation by potassium dichromate need to be corrected taking into account the possibility of incomplete oxidation of organic matter in soil. The efficiency of various double-pulse LIBS applications has been demonstrated in solving a number of environmental problems such as the determination of heavy and toxic metals in soil and the detection of sulfur in coal. The instrumentation and analytical procedures have been proposed and optimized for rapid control of the chlorine content in plant samples. The technique can be easily extended to ecological monitoring of toxic elements and heavy metals in any biogenic material.Introduction. Laser methods for analyzing the composition of soil, ore, minerals, and related materials have been developing rapidly for the last decade. A comprehensive review of these methods reveals that the technology for performing the analytical procedures, the equipment, and the techniques for processing results are similar. The employed methods are based on emission spectroscopy, fluorescence, Raman scattering, IR reflectance from the samples, etc. Laser-induced breakdown spectroscopy (LIBS) is promoted as a primary technique. This method was developed very early [1-4] and is sufficiently validated for solving various practical problems such as quality control of industrial products [5], processes [6], the environmental situation [7], water resources [8], and the composition of ores and minerals [9] in addition to problems in criminology for detecting explosives [10], pharmacology [11], archeology and art [12], and biological samples [13]. This method is used in agricultural chemistry to determine the soil content of carbon, which characterizes the humus content, and several nutritious elements and toxins [14][15][16]. For this, LIBS factors such as simple sample preparation for analysis, rapid processing of results and their distribution, and prospects for determining the soil composition under field conditions are important [17].Because soil has a complicated background composition, it is analyzed as a rule by calibrating instruments using certified samples (standards). These standards can differ in complexity even for solving similar problems depending on the matrix of samples subject to analysis. For example, the determination of C in chernozem and loamy soils and rocky and peaty ores cannot be carried out using single certified samples. Standards ...

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“…In Ermangelung einer Richtlinie für Abwasserbauwerke wird die zuvor zitierte DAfStb-Richtlinie "sinngemäß" auf typische Schäden an Abwasserbauwerken angewandt, was in bestimmten Fäl-len sicherlich sinnvoll ist. [10] einen Korrelationskoeffizienten von 0,981 bei einer mittleren Standardabweichung der dort beschriebenen Auswertungsmethode von 9 % ermittelt. Dabei ist zu beachten, dass die vorhandene Streuung der Ergebnisse maßgeblich aus der Heterogenität des Betons resultiert.…”

Section: Schäden An Abwasserbauwerken Durch Angriff Biogener Schwefelunclassified

“…Die Bestimmungsgrenze von LIBS für Schwefel liegt deutlich unterhalb der natürlichen SO 3 -Gehalte der Zemente, die in etwa zwischen 1,0 bis 4,5 M% bezogen auf [10] den Zement liegen. Für die durchgeführten Messungen wurden jedoch nur qualitative Tiefenprofile ermittelt und eine qualitative, bildgebende Darstellung der Schwefelverteilung in Beton erzeugt, was für die Fragestellung nach Anwesenheit von Schwefelverbindungen, die von außen eingetragen wurden, ausreichend ist.…”

Section: Oberflächenzugfestigkeitunclassified

Betonkorrosion durch Schwefelsäure an Abwasserbauwerken. Innovative Schadensdiagnose

Taffe

Pohl

Roeser³

et al. 2007

Beton und Stahlbetonbau

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Zur erfolgreichen Instandsetzung geschädigter Stahlbetonbauwerke sind verlässliche Daten aus Bauwerksuntersuchungen und darauf basierende Schlussfolgerungen durch den sachkundigen Planer unabdingbar. Während im Fall tausalzinduzierter Korrosion die Vorgehensweise bei der Untersuchung und Instandsetzung in der Praxis gut bekannt und geregelt ist, trifft dies bei Schäden an Abwasserbauwerken und Biogasanlagen durch biogene Schwefelsäure nicht zu. In diesem Beitrag wird gezeigt, welche Aussagen mit klassischen Prüfungen wie chemischer Analyse und Oberflächenzugfestigkeitsprüfung im Vergleich zu einem neu entwickelten Verfahren wie der Laser‐induzierten Breakdown Spektroskopie (LIBS) gewonnen werden können. Es werden die Möglichkeiten aber auch Grenzen dieser Verfahren bei der Bauwerksdiagnose im Fall von biogenem Schwefelsäureangriff beschrieben.

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Quantitative determination of sulfur content in concrete with laser-induced breakdown spectroscopy

Cited by 64 publications

References 10 publications

Sulfur dioxide Plasma Treatment of the Clay (Laponite) Particles

Sulfur dioxide Plasma Treatment of the Clay (Laponite) Particles

Development of a laser-induced breakdown spectroscopy method for soil and ecological analysis (review)

Betonkorrosion durch Schwefelsäure an Abwasserbauwerken. Innovative Schadensdiagnose

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