High spatial resolution analysis of lake sediment cores by laser ablationinductively coupled plasma-mass spectrometry (LA-ICP-MS)

2006 ◽  
Vol 4 (7) ◽  
pp. 268-274 ◽  
Author(s):  
Sebastien Rauch ◽  
Harold F. Hemond ◽  
Daniel J. Brabander
2019 ◽  
Vol 11 (16) ◽  
pp. 2129-2137 ◽  
Author(s):  
Yuqiu Ke ◽  
Jianzong Zhou ◽  
Lei Qiao ◽  
Muhui Zhang ◽  
Wei Guo ◽  
...  

A methodology for high spatial resolution quantitative elemental imaging of foraminifer by LA-ICP-MS was developed.


2009 ◽  
Vol 81 (1) ◽  
pp. 99-114 ◽  
Author(s):  
Bernhard Bühn ◽  
Márcio M. Pimentel ◽  
Massimo Matteini ◽  
Elton L. Dantas

Age determinations using the 235U and 238U radioactive decay series to the daughter isotopes 207Pb and 206Pb, respectively, using the mineral zircon (ZrSiO4), are widely used to decipher geological processes. A new method developed in the last couple of years, the laser ablation multi-collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS), overcomes previous laborious sample preparation, and yields isotopic ratios and age data with a high spatial resolution of ten of microns. The present study describes the analytical set-up and data reduction process as presently applied at the Laboratory for Geochronology of the University of Brasília. It explores the precision and accuracy of the method by cross-analysing three international zircon standards. We arrive at a precision of 1.9 to 3.7% (2σ SD) and an accuracy of 0.6 to 3.8% (2σ SD) for and U isotopic ratios of the standards. We also apply the method to two natural zircon samples, which have previously been dated by other analytical methods. A comparison of the results show a good conformity of the age data,being whitin the error limits. The data demonstrate the great analytical potential of the method for rapid, precise and accurate U-Pb isotopic analyses on the micron scale.


2017 ◽  
Vol 32 (5) ◽  
pp. 975-986 ◽  
Author(s):  
Lie-Wen Xie ◽  
Jin-Hui Yang ◽  
Qing-Zhu Yin ◽  
Yue-Heng Yang ◽  
Jing-Bo Liu ◽  
...  

A new LA-MIC-ICP-MS analytical technique has been developed for the rapid measurement of 206Pb/238U zircon age (<1%, 2s) at a high spatial resolution. We show that this technique can be routinely employed to date U–Pb in small and/or complex zircons, providing a powerful tool for geochronology.


2005 ◽  
Vol 62 (11) ◽  
pp. 2425-2430 ◽  
Author(s):  
Rachel Barnett-Johnson ◽  
Frank C Ramos ◽  
Churchill B Grimes ◽  
R Bruce MacFarlane

Advances in probe-based mass spectrometry allow for high spatial resolution of elemental and isotopic signatures in fish otoliths that can be used to address fundamental questions in fisheries ecology. Analyses of Chinook salmon (Oncorhynchus tshawytscha) otoliths from two river populations yield identical 87Sr/86Sr ratios using laser ablation multicollector inductively coupled plasma mass spectrometry (LA-MC-ICPMS) and thermal ionization mass spectrometry (TIMS). Results were obtained from freshwater otoliths with low Sr concentrations (300–800 ppm) using high spatial resolution (50 µm) corresponding to temporal histories of ~12 days fish growth. Low natural variation in 87Sr/86Sr among otoliths from the same rivers allows for conservative estimates of external precision of techniques. Thus, we demonstrate that Sr isotope ratios obtained by LA-MC-ICPMS can be accurate and precise, bypassing the time-intensive sample preparation required by microdrilling and TIMS. This technique opens the use of Sr isotopes for broader ecological questions requiring large sample sizes to characterize nursery habitats, metapopulation dynamics, and stock discrimination similar to studies that focus on elemental concentrations, thereby providing a more robust tool for some freshwater and diadromous fishes.


2002 ◽  
Vol 3 (1) ◽  
Author(s):  
Mikael D. Axelsson ◽  
Ilia Rodushkin ◽  
Douglas C. Baxter ◽  
Johan Ingri ◽  
Björn Öhlander

2013 ◽  
Vol 85 (21) ◽  
pp. 10107-10116 ◽  
Author(s):  
Hao A. O. Wang ◽  
Daniel Grolimund ◽  
Charlotte Giesen ◽  
Camelia N. Borca ◽  
James R. H. Shaw-Stewart ◽  
...  

2014 ◽  
Vol 407 (2) ◽  
pp. 379-385 ◽  
Author(s):  
Luisa Poto ◽  
Jacopo Gabrieli ◽  
Simon Crowhurst ◽  
Claudio Agostinelli ◽  
Andrea Spolaor ◽  
...  

2020 ◽  
Vol 2020 ◽  
pp. 1-10 ◽  
Author(s):  
Liu Shenghua ◽  
Wang Xin ◽  
Shi Huixia ◽  
Zhang Hui ◽  
Liu Bingbing

In this work, a novel method for high spatial resolution U-Pb dating of zircon by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) at 10–16 μm spot diameter has been proposed. This was achieved by introducing 2% (v/v) water-ethanol vapours into ICP in combination with the shielded torch system to increase the sensitivity and suppress the isotopic fractionation effect. Precise and accurate concordant U-Pb ages for Plešovice, GJ-1, and 91500 zircons were obtained using the proposed method, and the results agreed well with the isotope dilution-thermal ionization mass spectrometry (ID-TIMS) and LA-ICP-MS within 2σ, except for the ages obtained using dry plasma at 10 μm spot diameter. Additionally, the effects of plasma condition (dry plasma or 2% (v/v) ethanol plasma) and spot size (10, 16, 24, or 32 μm) on precision (RSD), accuracy (RE), and uncertainty (2σ) of the 206Pb/238U ages have been studied. The results indicated that increasing the spot diameter and introducing 2% (v/v) water-ethanol vapours into ICP significantly improved the precision, accuracy, and uncertainty for small spot diameters (10 and 16 μm), while it exhibited little influence for intermediate spot diameters (24 and 32 μm). Furthermore, the effects of spot size and plasma condition on the precision, accuracy, and uncertainty strongly depended on the sensitivity of analytes.


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