Laser excited atomic fluorescence spectrometry — a review

Stchur, Peter; Yang, Karl X.; Hou, Xiandeng; Sun, Tao; Michel, Robert G.

doi:10.1016/s0584-8547(01)00265-8

Cited by 55 publications

(31 citation statements)

References 105 publications

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“…It has already been associated with several other techniques and reviews on the subject can be found in the literature. 21 The LIBS-LIF approach consists of generating an ablation plasma using a first laser, then re-excite the atoms of the element of interest using a second laser tuned to a specific wavelength, corresponding to a strong absorption line. This hyphenated approach has been studied for the detection of trace elements in solids, [22][23][24][25][26][27][28][29][30] liquids [31][32][33][34] and aerosols, 35 in ambient air or in various controlled atmospheres.…”

Section: -20mentioning

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.

115

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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: -20mentioning

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.

115

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“…The limits of detection (3σ) found under these conditions were 15 times higher than the lowest instrumental LOD reported in ref. [2]. This may be caused by the low 10-Hz repetition rate, the non-specific absorption, and the intricate chemical composition of the gas phase during the atomization process, which may lead to quenching phenomena, especially at high temperature.…”

Section: Data Processing and Detection Limitmentioning

confidence: 99%

“…Electrothermal atomization-laser-excited atomic fluorescence (ETA-LEAF) is among the most sensitive methods for direct metal analysis [2] and certainly the most sensitive one for lead determination, since metal contents as low as 0.2 fg (1 attomol) can theoretically be detected [3,4]. Actually, depending on the matrix and injection volume, detection limits (3σ) within 50 pg L -1 [3] and 1 ng L -1 [5,6,7,8,9] have been published.…”

Section: Introductionmentioning

confidence: 99%

Laser-induced fluorescence with an OPO system. Part II: direct determination of lead content in seawater by electrothermal atomization–laser-excited atomic fluorescence (ETA–LEAF)

Bihan¹,

Lijour²,

Giamarchi³

et al. 2003

Anal Bioanal Chem

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Fluorescence was induced by coupling a laser with an optical parametric oscillator (OPO) to develop an analytical method for the direct determination of lead content, at ultra-trace level, in seawater by electrothermal atomization-laser-excited atomic fluorescence (ETA-LEAF). The optimization of atomization conditions, laser pulse energy, and mainly temporal parameters allowed us to reach a 3 fg detection limit (0.3 ng L(-1)) despite the low repetition rate of the device. The expected error on predicted concentrations of lead, at trace levels, in seawater was below 15%.

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“…One promising avenue for improving the sensitivity of LIBS consists in using the LIBS-LIFS approach (LIBS combined with Laser-Induced Fluorescence Spectroscopy) [4]. It has already been shown for various trace elements that this approach can improve notably the LoD [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Detection of lead in brass by laser-induced breakdown spectroscopy combined with laser-induced fluorescence

et al. 2008

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Laser-Induced Breakdown Spectroscopy (LIBS) technique combined with Laser-Induced Fluorescence (LIF) is known to be a high sensitivity and high selectivity analytical technique. Although sub-ppm limits of detection (LoD) have already been demonstrated, there is still a constant and urgent need to reach lower LoDs. Here, we report results obtained for the detection of lead trace in brass samples. The plasma was produced by a Q-switched Nd:YAG laser at 1064 nm and then re-excited by a nanosecond optical parametric oscillator (OPO) laser tuned at 283.31 nm. Emission from Pb atoms was then observed at 405.78 nm. The experiments were performed in air at atmospheric pressure. We found out that the optimal conditions were obtained for an ablation fluence of 2-3 J/cm 2 and inter-pulse delay of 8-10 µs. Also, excitation energy of about 200 µJ was required to maximize the Pb(I) 405.78 nm emission. Using the LIBS-LIFS technique, the LoD was estimated to be about 180 ppb over 100 laser shots, which corresponds to an improvement of about two orders of magnitude with that obtained using conventional LIBS.

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Laser excited atomic fluorescence spectrometry — a review

Cited by 55 publications

References 105 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)

Laser-induced fluorescence with an OPO system. Part II: direct determination of lead content in seawater by electrothermal atomization–laser-excited atomic fluorescence (ETA–LEAF)

Detection of lead in brass by laser-induced breakdown spectroscopy combined with laser-induced fluorescence

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