| Download | - View accepted manuscript: Laser-induced fluorescence detection of lead atoms in a laser-induced plasma: an experimental analytical optimization study (PDF, 998 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1016/j.sab.2009.03.021 |
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| Author | Search for: Laville, Stéphane1; Search for: Goueguel, Christian; Search for: Loudyi, Hakim; Search for: Vidal, François; Search for: Chaker, Mohamed; Search for: Sabsabi, Mohamad1 |
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| Affiliation | - National Research Council of Canada. NRC Industrial Materials Institute
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| Format | Text, Article |
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| Subject | Laser-induced fluorescence detection; lead atoms; laser-induced plasma; laser-induced breakdown spectroscopy (LIBS); laser-induced fluorescence (LIF); Enhanced sensibility; Limit of detection |
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| Abstract | The combination of the laser-induced breakdown spectroscopy (LIBS) and laser-induced fluorescence (LIF) techniques was investigated to improve the limit of detection (LOD) of trace elements in solid matrices. The influence of the main experimental parameters on the LIF signal, namely the ablation fluence, the excitation energy, and the inter-pulse delay, was studied experimentally and a discussion of the results was presented. For illustrative purpose we considered detection of lead in brass samples. The plasma was produced by a Q-switched Nd:YAG laser and then re-excited by a nanosecond Optical Parametric Oscillator (OPO) laser. The experiments were performed in air at atmospheric pressure. We found out that the optimal conditions were obtained for our experimental set-up using relatively weak ablation fluence of 2-3 J/cm² and an inter-pulse delay of abuot 5-10 µs. Also, a few tens of microjoules was typically required to maximize the LIF signal. Using the LIBS-LIFS technique, a single-shot LOD for lead of about 1.5 part per million (ppm) was obtained while a value of 0.2 ppm was obtained after accumulating over 100 shots. These values represent an improvement of about two orders of magnitude with respect to LIBS. |
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| Publication date | 2009-04 |
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| Terms of use | - The Publisher's version/PDF can be used in NPArC after an embargo period of 12 months form the date of publication. Previous to the embargo to be lifted, NPArC will link to the publisher' site and will continue to do so after embargo has been lifted.
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 52335 |
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| NPARC number | 10976302 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | b8644ae3-af30-4472-a86b-7e696c99f441 |
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| Record created | 2009-10-03 |
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| Record modified | 2020-04-16 |
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