Resonance fluorescence spectroscopy in laser-induced cavitation bubbles

Koch, Sandra; Garen, W.; Neu, W.; Reuter, R.

doi:10.1007/s00216-006-0324-6

Cited by 23 publications

(17 citation statements)

References 11 publications

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“…Under this category, the underlying purpose is either to improve the information power of the approach, i.e., by providing both molecular as well as elemental information, as in the coupling of LIBS with Raman spectroscopy, 394,,–403 or again to improve the sensitivity (laser ablation–laser-induced fluorescence, LA-LIF). 404,,–420…”

Section: Review Outlinementioning

confidence: 99%

“…The emphasis is on its quantitative aspects and improvement in sensitivity and detection limits. The fluorescence experiments reported below have been performed with pulsed frequency-doubled tunable dye lasers, 406,,–408,412,,–414 frequency-doubled and -tripled Ti-sapphire lasers, 411,416 and OPO tunable lasers. 418,419…”

Section: Hyphenated (Tandem) Approachesmentioning

confidence: 99%

“…Godwal et al 414 determined lead in a water jet sample ablated with a laser at 266 nm, and Koch et al 413 detected indium fluorescence in the cavitation bubble induced in liquids by the primary ablating laser: the choice of the element (In) was dictated more by the convenience of the excitation/detection scheme rather than the importance of the element itself. 413 The determination of iron and lead in aqueous solutions was described by Loudyi et al, 417 while Laville et al 418 characterized and optimized the laser and instrumental parameters for lead detection in brass samples. The popularity of lead as analyte is due to the large spectral separation between the excitation (283.305 nm) and fluorescence (405.781 nm) wavelengths, which allows efficient rejection of spurious laser scattering.…”

Section: Hyphenated (Tandem) Approachesmentioning

confidence: 99%

See 2 more Smart Citations

Laser-Induced Breakdown Spectroscopy (LIBS), Part II: Review of Instrumental and Methodological Approaches to Material Analysis and Applications to Different Fields

2012

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The first part of this two-part review focused on the fundamental and diagnostics aspects of laser-induced plasmas, only touching briefly upon concepts such as sensitivity and detection limits and largely omitting any discussion of the vast panorama of the practical applications of the technique. Clearly a true LIBS community has emerged, which promises to quicken the pace of LIBS developments, applications, and implementations. With this second part, a more applied flavor is taken, and its intended goal is summarizing the current state-of-the-art of analytical LIBS, providing a contemporary snapshot of LIBS applications, and highlighting new directions in laser-induced breakdown spectroscopy, such as novel approaches, instrumental developments, and advanced use of chemometric tools. More specifically, we discuss instrumental and analytical approaches (e.g., double- and multi-pulse LIBS to improve the sensitivity), calibration-free approaches, hyphenated approaches in which techniques such as Raman and fluorescence are coupled with LIBS to increase sensitivity and information power, resonantly enhanced LIBS approaches, signal processing and optimization (e.g., signal-to-noise analysis), and finally applications. An attempt is made to provide an updated view of the role played by LIBS in the various fields, with emphasis on applications considered to be unique. We finally try to assess where LIBS is going as an analytical field, where in our opinion it should go, and what should still be done for consolidating the technique as a mature method of chemical analysis.

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Section: Review Outlinementioning

confidence: 99%

Section: Hyphenated (Tandem) Approachesmentioning

confidence: 99%

Section: Hyphenated (Tandem) Approachesmentioning

confidence: 99%

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Laser-Induced Breakdown Spectroscopy (LIBS), Part II: Review of Instrumental and Methodological Approaches to Material Analysis and Applications to Different Fields

2012

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“…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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“…Plasma formation on flowing jet liquids [3][4][5], inside bubbles [6], on liquid droplets [7][8], on aerosols formed by nebulization [9,10] or by electro-spray ionization [11,12], on samples in which physical conditions are changed by freezing [13,14] or by chemical derivatization [15][16][17][18], liquids adsorbed on solid substrates [19][20][21][22][23] or on sol-gels [24] and use of sequential laser pulses [25][26][27][28][29] are some of the efforts devoted in the last decade to increase the analytical capability of the LIBS technique for liquids analysis. Also, filtration based approaches, collection of the suspended particles like pollen, bacteria, fungi and viruses on filters enabled analysis of biological materials in water [30].…”

Section: Introductionmentioning

confidence: 99%

Development and validation of a laser-induced breakdown spectroscopic method for ultra-trace determination of Cu, Mn, Cd and Pb metals in aqueous droplets after drying

Aras

Yalçın

2016

Talanta

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Keywords:Laser-induced breakdown spectroscopy Liquid droplet analysis Oxidized silicon wafer substrate (Si þ SiO 2 ) a b s t r a c tThe present study reports a fast and accurate methodology for laser-induced breakdown spectroscopic, LIBS, analysis of aqueous samples for environmental monitoring purposes. This methodology has two important attributes: one is the use of a 300 nm oxide coated silicon wafer substrate (Siþ SiO 2 ) for the first time for manual injection of 0.5 microliter aqueous metal solutions, and two is the use of high energy laser pulses focused outside the minimum focus position of a plano convex lens at which relatively large laser beam spot covers the entire droplet area for plasma formation. Optimization of instrumental LIBS parameters like detector delay time, gate width and laser energy has been performed to maximize atomic emission signal of target analytes; Cu, Mn, Cd and Pb. Under the optimal conditions, calibration curves were constructed and enhancements in the LIBS emission signal were obtained compared to the results of similar studies given in the literature. The analytical capability of the LIBS technique in liquid analysis has been improved. Absolute detection limits of 1.3 pg Cu, 3.3 pg Mn, 79 pg Cd and 48 pg Pb in 0.5 microliter volume of droplets were obtained from single shot analysis of five sequential droplets. The applicability of the proposed methodology to real water samples was tested on the Certified Reference Material, Trace Metals in Drinking Water, CRM-TMDW and on ICP multi-element standard samples. The accuracy of the method was found at a level of minimum 92% with relative standard deviations of at most 20%. Results suggest that 300 nm oxide coated silicon wafer has an excellent potential to be used as a substrate for direct analysis of contaminants in water supplies by LIBS and further research, development and engineering will increase the performance and applicability of the methodology.

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Resonance fluorescence spectroscopy in laser-induced cavitation bubbles

Cited by 23 publications

References 11 publications

Laser-Induced Breakdown Spectroscopy (LIBS), Part II: Review of Instrumental and Methodological Approaches to Material Analysis and Applications to Different Fields

Laser-Induced Breakdown Spectroscopy (LIBS), Part II: Review of Instrumental and Methodological Approaches to Material Analysis and Applications to Different Fields

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

Development and validation of a laser-induced breakdown spectroscopic method for ultra-trace determination of Cu, Mn, Cd and Pb metals in aqueous droplets after drying

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