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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)

Abstract

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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Acknowledgements

The LYOPO program has been funded by the Conseil Régional de Bretagne, the Conseil Général du Finistère, the Communauté Urbaine de Brest and the Centre National de la Recherche Scientifique.

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Correspondence to A. Le Bihan.

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Le Bihan, A., Lijour, Y., Giamarchi, P. et al. 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). Anal Bioanal Chem 375, 815–819 (2003). https://doi.org/10.1007/s00216-003-1795-3

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  • DOI: https://doi.org/10.1007/s00216-003-1795-3

Keywords

  • ETA–LEAF
  • OPO
  • Time-resolved spectroscopy
  • Pb
  • Seawater