Evaluation of the Analytical Capability of NIR Femtosecond Laser Ablation-Inductively Coupled Plasma Mass Spectrometry

Hirata, Takafumi; Kon, Yoshiaki

doi:10.2116/analsci.24.345

Cited by 67 publications

(47 citation statements)

References 62 publications

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“…The faster mass scanning achieved by the electrostatic deflectors provides better analytical precision in the isotope ratio measurements . The laser ablation system employed in this study is an in-house titanium-sapphire (Ti:S) femtosecond laser ablation system (Hirata and Kon, 2008) equipped with a Galvanometric beam scanning module . The pulse duration of the femtosecond laser is 220 femtoseconds, which prevents surface convexity of the ablation crater margin and deposition of the ablated material, and thus the resulting elemental fractionation index (magnitude of elemental fractionation during the laser ablation) could be significantly reduced (Hirata and Kon, 2008;Hirata et al, 2011).…”

Section: Zircon U-pb Datingmentioning

confidence: 99%

“…Analytical conditions in this study are outlined in Table 2. The U and Pb isotopic analyses were carried out based on procedures reported previously by Hirata and Kon (2008), Yokoyama et al (2011) and Sakata et al (2014) 232 Th and 238 U have been obtained from impurity-free cores and rims of 10-15 zircon crystals from 20 µm ablation pits on each rock sample. The U-Pb isotopic ratios from a total of 125 spots on zircons from 10 samples were measured in this study (Fig.…”

Section: Zircon U-pb Datingmentioning

confidence: 99%

“…To achieve this, charcoal filters for the removal of Hg in Ar gas (Hirata and Nesbitt, 1995;Hirata et al, 2005) and the signal smoothing device (Tunheng and Hirata, 2004) were components of our LA-ICP-MS system (Orihashi et al, 2008). Moreover, a femtosecond laser ablation system was employed to reduce the elemental fractionation during the laser ablation (Hirata and Kon, 2008).…”

Section: Zircon U-pb Datingmentioning

confidence: 99%

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Zircon growth in a granitic pluton with specific mechanisms, crystallization temperatures and U–Pb ages: Implication to the ‘spatiotemporal’ formation process of the Toki granite, central Japan

Yuguchi

Iwano²,

Kato

et al. 2016

Journal of Mineralogical and Petrological Sciences

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Zircons collected from a granitic pluton provide evidence of serial growth events with specific mechanisms, crystallization temperatures and U-Pb ages, revealing details of the sequential formation process from intrusion through emplacement to crystallization/solidification. The events have been identified by: 1) the study of the internal structure of zircon using cathodoluminescence, 2) deriving crystallization temperatures using Ti-inzircon thermometry of the internal structure and 3) U-Pb age dating of the internal structure. The magmatic zircons from the Toki granite, central Japan, show two kinds in their internal structure: a low luminescence core (LLC) and oscillatory zonation (OZ). The LLC was produced by interfacial reaction-controlled growth in the granitic magma with cooling from about 910 to 760°C. The formation of OZ occurred by diffusion-controlled growth in a cooling magma chamber from about 850 to 690°C. The U-Pb ages derived from the LLC ranges from 74.7 ± 4.2 to 70.5 ± 1.3 Ma, indicating the incipient intrusion timing of the magma into the shallow crust. The OZ ages distribute from 72.7 ± 0.6 to 70.4 ± 1.7 Ma, which mean the timing from emplacement to crystallization/solidification of the granite pluton. Thus, the serial processes from intrusion through emplacement to crystallization/solidification occurred within a few million years. The old LLC and OZ ages are recognized in the western margins of the Toki granite, implying that the magma forming the western margins was the first to intrude, emplace and crystallize/solidify. The western margins with initial intrusion may accompany the crustal assimilation in order to create sufficient magma reservoir space, which is consistent with larger SrI and ASI values found in the western margins of the granite.

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Section: Zircon U-pb Datingmentioning

confidence: 99%

Section: Zircon U-pb Datingmentioning

confidence: 99%

Section: Zircon U-pb Datingmentioning

confidence: 99%

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Zircon growth in a granitic pluton with specific mechanisms, crystallization temperatures and U–Pb ages: Implication to the ‘spatiotemporal’ formation process of the Toki granite, central Japan

Yuguchi

Iwano²,

Kato

et al. 2016

Journal of Mineralogical and Petrological Sciences

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“…Data were processed and plotted using Isoplot 4.13 (Ludwig, 2008). In situ LA-ICPMS analyses of rare earth elements (REE) and trace element concentrations of zircon, garnet, hornblende, orthopyroxene, biotite, plagioclase and apatite were performed by an iCAP-Qc quadrupole-based ICPMS coupled with a NWR Femto femtosecond laser-ablation system or a NWR-193 ArF Excimer laser-ablation system (Hirata and Kon, 2008;Sakata et al, 2014). Analytical conditions for the LA-ICPMS analyses are summarized in supplementary Tables S1 and S2 (Tables S1 and S2 are available online from http:// doi.org/10.2465/jmps.150220.).…”

Section: Methodsmentioning

confidence: 99%

Geochemical behavior of zirconium during Cl–rich fluid or melt infiltration under upper amphibolite facies metamorphism — A case study from Brattnipene, Sør Rondane Mountains, East Antarctica

Higashino

Kawakami

Tsuchiya

et al. 2015

Journal of Mineralogical and Petrological Sciences

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The appropriateness of Zr as an 'immobile element' during garnet-hornblende (Grt-Hbl) vein formation potentially caused by the Cl-rich fluid or melt infiltration under upper amphibolite facies condition is examined. The sample used is a Grt-Hbl vein from Brattnipene, Sør Rondane Mountains, East Antarctica that discordantly cuts the gneissose structure of the mafic gneiss.Modal analysis of the wall rock minerals combined with the quantitative determination of their Zr contents reveals that most of the whole-rock Zr resides in zircon whereas~5% is hosted in garnet and hornblende. The Zr concentration of garnet and hornblende is constant irrespective of the distance from the vein. Zircon shows no resorption or overgrowth microstructures. Moreover, the grain size, chemical zoning (CL, Th/U ratio and REE pattern) and rim ages of zircon are also similar irrespective of the distance from the vein. LA-ICPMS UPb dating of zircon rims does not give younger ages than the granulite facies metamorphism reported by previous studies. All of these detailed observations on zircon support that zircon is little dissolved or overgrown, and that Zr is not added nor lost during the Grt-Hbl vein formation. Therefore, Zr can be described as an appropriate 'immobile element' during the Grt-Hbl vein formation. Detailed microstructural observation of zircon is thus useful in evaluating the appropriateness of Zr as an immobile element.

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“…Short (femtosecond) pulse widths also have been reported to enable stoichiometric, non-thermal ablation and to yield smaller particles than those generated by lasers with longer pulse widths. [8][9][10] Fundamental mechanisms of laser ablation, such as vaporization, ionization, and generation of particles, have been studied in efforts to achieve stoichiometric ablation, and ionization mechanisms in ICP also have been investigated. [11][12][13][14][15][16][17] It has been reported that when particles generated by LA were introduced into the ICP, mass-load-dependent matrix effects were caused in LA-ICPMS.…”

Section: Introductionmentioning

confidence: 99%

Temporal Changes of Fractionation Index Caused by Changes in the Large Size of Ablated Particles in Laser Ablation-Inductively Coupled Plasma Mass Spectrometry

2015

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To elucidate mechanisms of elemental fractionation that are observed in laser ablation-inductively coupled plasma mass spectrometry, the relative intensities of 34 elements, each normalized by a Ca internal standard, were measured every minute during a 10-min laser ablation of an NIST 610 glass standard. Temporal changes in the fractionation index (FI) were obtained by dividing the relative intensity of every minute by that of the first minute. The particles generated by laser ablation were collected on a filter every minute, and they were observed using scanning electron microscopy to investigate changes in the large size of particles. Large variations among the large size of particles were observed using single-site mode and under 1.0 mm defocus conditions. The 34 measured elements were classified into two groups, depending on their observed FI variation. The FI variation was rationalized by elemental behavior due to changes in the large size of ablated particles introduced into the ICP.

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Evaluation of the Analytical Capability of NIR Femtosecond Laser Ablation-Inductively Coupled Plasma Mass Spectrometry

Cited by 67 publications

References 62 publications

Zircon growth in a granitic pluton with specific mechanisms, crystallization temperatures and U–Pb ages: Implication to the ‘spatiotemporal’ formation process of the Toki granite, central Japan

Zircon growth in a granitic pluton with specific mechanisms, crystallization temperatures and U–Pb ages: Implication to the ‘spatiotemporal’ formation process of the Toki granite, central Japan

Geochemical behavior of zirconium during Cl–rich fluid or melt infiltration under upper amphibolite facies metamorphism — A case study from Brattnipene, Sør Rondane Mountains, East Antarctica

Temporal Changes of Fractionation Index Caused by Changes in the Large Size of Ablated Particles in Laser Ablation-Inductively Coupled Plasma Mass Spectrometry

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