Trace Element Analysis in Water by the Laser-Induced Breakdown Spectroscopy Technique

Arca, G.; Ciucci, A.; Palleschi, Vincenzo; Rastelli, S.; Tognoni, E.

doi:10.1366/0003702971941863

Cited by 168 publications

(61 citation statements)

References 10 publications

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“…40, while a value of 5% was determined for 10 series of 100 shots at a repetition rate of 1 Hz in Ref. 41. Also, it is worth mentioning that no data treatment aiming to the removal of outliers was carried out to reach such a good reproducibility in the measurements.…”

Section: B Experimental Setupmentioning

confidence: 99%

Improving laser-induced breakdown spectroscopy (LIBS) performance for iron and lead determination in aqueous solutions with laser-induced fluorescence (LIF)

Loudyi

Rifaï

Laville

et al. 2009

J. Anal. At. Spectrom.

113

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The combination of laser-induced breakdown spectroscopy (LIBS) and laser-induced fluorescence (LIF) was investigated to improve the limit of detection (LoD) of trace elements in liquid water, while preserving the distinctive on-line monitoring capabilities of LIBS analysis. The influence of the main experimental parameters, namely the ablation fluence, the excitation fluence, and the inter-pulse delay was studied to maximize the fluorescence signal. The plasma was produced by a 266 nm frequencyquadrupled Q-switched Nd:YAG laser and the trace elements under investigation were then re-excited by a nanosecond optical parametric oscillator (OPO) laser, delivering pulses in the sub-mJ energy range, and tuned to strong absorption lines of the trace elements. The reproducibility of the measurements was improved using a home-made flow-cell, and relative standard deviations as low as 6.7% for a series of 100 shots were attained with a repetition rate of 0.7 Hz. Using the LIBS-LIF technique, we demonstrated LoDs of 39 ppb and 65 ppb for Pb and Fe, respectively, accumulating over 100 laser shots only, which correspond to an improvement of about 500 times with respect to LIBS.

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Section: B Experimental Setupmentioning

confidence: 99%

Improving laser-induced breakdown spectroscopy (LIBS) performance for iron and lead determination in aqueous solutions with laser-induced fluorescence (LIF)

Loudyi

Rifaï

Laville

et al. 2009

J. Anal. At. Spectrom.

113

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show abstract

“…LIBS has already been applied in a wide range of applications, such as civilian and military environmental monitoring, cultural heritage analysis and characterization, and biological and medical identification, as well as space exploration [7][8][9][10][11]. However, one of the major drawbacks of LIBS is its low detection sensitivity in determining trace elements.…”

Section: Introductionmentioning

confidence: 99%

Accuracy improvement of quantitative analysis by spatial confinement in laser-induced breakdown spectroscopy

Guo¹,

Hao²,

Shen³

et al. 2013

Opt. Express

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“…As a useful analytical tool, LIBS is used extensively in various areas such as remote detection, hostile environment monitoring, and cultural heritage conservation [6][7][8][9][10]. Researchers are paying more attention to LIBS as a diagnostic method for elemental analysis as it is characterized by fast, real-time, in situ, low invasiveness, and multi-elemental diagnosis, normally without the need for sample preparation [11,12].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of optical emission from laser-induced plasmas by combined spatial and magnetic confinement

Guo¹,

Wei²,

Zhang³

et al. 2011

Opt. Express

113

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He, X. N.; Li, C. M.; Zhou, Y. S.; Cai, Z. X.; Zeng, X. Y.; and Lu, Yongfeng, "Enhancement of optical emission from laser-induced plasmas by combined spatial and magnetic confinement" (2011 Abstract: To enhance optical emission in laser-induced breakdown spectroscopy, both a pair of permanent magnets and an aluminum hemispherical cavity (diameter: 11.1 mm) were used simultaneously to magnetically and spatially confine plasmas produced by a KrF excimer laser in air from pure metal and alloyed samples. High enhancement factors of about 22 and 24 in the emission intensity of Co and Cr lines were acquired at a laser fluence of 6.2 J/cm 2 using the combined confinement, while enhancement factors of only about 11 and 12 were obtained just with a cavity. The mechanism of enhanced optical emission by combined confinement, including shock wave in the presence of a magnetic field, is discussed. The Si plasmas, however, were not influenced by the presence of magnets as Si is hard to ablate and ionize and hence has less free electrons and positive ions. Images of the laser-induced Cr and Si plasmas show the difference between pure metallic and semiconductor materials in the presence of both a cavity and magnets.

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Trace Element Analysis in Water by the Laser-Induced Breakdown Spectroscopy Technique

Cited by 168 publications

References 10 publications

Improving laser-induced breakdown spectroscopy (LIBS) performance for iron and lead determination in aqueous solutions with laser-induced fluorescence (LIF)

Improving laser-induced breakdown spectroscopy (LIBS) performance for iron and lead determination in aqueous solutions with laser-induced fluorescence (LIF)

Accuracy improvement of quantitative analysis by spatial confinement in laser-induced breakdown spectroscopy

Enhancement of optical emission from laser-induced plasmas by combined spatial and magnetic confinement

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