UV-femtosecond and nanosecond laser ablation-ICP-MS: internal and external repeatability

González, Jhanis; Dundas, Siv Hjorth; Liu, Chun Yi; Mao, Xianglei; Russo, Richard E.

doi:10.1039/b603492f

Cited by 51 publications

(42 citation statements)

References 22 publications

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“…With femtosecond-pulsed ablation, the irradiated volume can explode (Coulomb explosion) before the photon energy is dissipated as heat in the lattice; melting is reduced (reducing or eliminating melt ejection) and the ablation process could produce a more uniform aerosol compared to nanosecond laser ablation [25]. Improved chemical analysis precision and accuracy by reducing systematic errors related to the particle size distribution and resultant spikes in the transient signal as well as a relaxation of matrix dependence has been shown for the analysis of glass and metal alloy samples when using femtosecond laser pulses [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Metal particles produced by laser ablation for ICP–MS measurements

González

LIU

Wen

et al. 2007

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Pulsed laser ablation (266nm) was used to generate metal particles of Zn and Al alloys using femtosecond (150 fs) and nanosecond (4 ns) laser pulses with identical fluences of 50 J cm -2 . Characterization of particles and correlation with InductivelyCoupled Plasma Mass Spectrometer (ICP-MS) performance was investigated. Particles produced by nanosecond laser ablation were mainly primary particles with irregular shape and hard agglomerates (without internal voids). Particles produced by femtosecond laser ablation consisted of spherical primary particles and soft agglomerates formed from numerous small particles. Examination of the craters by white light interferometric microscopy showed that there is a rim of material surrounding the craters formed after nanosecond laser ablation. The determination of the crater volume by white light interferometric microscopy, considering the rim of material surrounding ablation craters, revealed that the volume ratio (fs/ns) of the craters on the selected samples was approximately 9 (Zn), 7 (NIST627 alloy) and 5 (NIST1711 alloy) times more ablated mass with femtosecond pulsed ablation compared to nanosecond pulsed ablation. In addition, an increase of Al concentration from 0 to 5% in Zn base alloys caused a large increase in the diameter of the particles, up to 65% while using nanosecond laser pulses.When the ablated particles were carried in argon into an ICP-MS, the Zn and Al signals intensities were greater by factors of ~ 50 and ~ 12 for fs vs. ns ablation. Femtosecond 2 pulsed ablation also reduced temporal fluctuations in the 66 Zn transient signal by a factor of ten compared to nanosecond laser pulses.

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Section: Introductionmentioning

confidence: 99%

Metal particles produced by laser ablation for ICP–MS measurements

González

LIU

Wen

et al. 2007

Talanta

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“…The developments performed in the laser area have mainly been driven in two directions: shorter wavelengths and shorter pulses. 51,52 Both aimed at unifying the idea of more efficient and defined use of the laser-pulse energy delivered onto the sample for stoichiometric aerosol generation.…”

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confidence: 99%

Critical revision of GD-MS, LA-ICP-MS and SIMS as inorganic mass spectrometric techniques for direct solid analysis

Pisonero

Fernández

Günther

2009

J. Anal. At. Spectrom.

157

115

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“…24,37,46,47 Using the fs-laser ablation system, laser-induced sample particles can be modified toward smaller sizes, resulting in better analytical precision or repeatability of the measurement with higher analytical sensitivity for silicate minerals, glass and metallic samples. [48][49][50][51] The analytical capability can be further improved by employing the UV-fs-laser operating at 266, 213 or 196 nm wavelength. 24,52,53 Despite the obvious success in obtaining higher sensitivity and precision of the measurements, because of much higher energy irradiance, the typical depth of the ablation pit can reach >100 μm, and great care must be given in the laser operational parameters in order to achieve higher spatial resolution of the analysis.…”

Section: Introductionmentioning

confidence: 99%