NDLI: Lead isotope analysis of melt inclusions by LA-MC-ICP-MS

Content Provider	Royal Society of Chemistry (RSC)
Author	Ren, Zhong-Yuan Qian, Sheng-Ping Nichols, Alexander R. L. Zhang, Le Zhang, Yin-Hui Liu, Jian-Qiang Zhang, Yan
Copyright Year	2014
Abstract	Pb isotope compositions of melt inclusions provide unique information about the composition of primary magmas and their source. In this study, we have developed a method for measuring Pb isotopes in small olivine-hosted melt inclusions (>40 μm) from young and old volcanoes by LA-MC-ICP-MS. We used a new interface cone assemblage consisting of a Jet sample cone and X skimmer cone. A small flow of N2 gas was added to the carrier gas and passed through the assemblage to enhance the signal intensity. In addition the energy and repetition rate of the laser conditions were reduced and the signal integration time was shortened in order to lengthen the laser ablation time and to collect enough data. Mass bias and instrument drift were corrected using a standard–sample–standard bracketing method. The analysis routine employed eight ion counters to receive 238U, 235U, 232Th, 208Pb, 207Pb, 206Pb, 204Pb and 202Hg signals simultaneously, which allowed Hg interference to be corrected on 204Pb, and in old samples U–Th decay to be age-corrected. Using the Jet and X cones, under the same laser ablation conditions, the precisions for almost all the measured standard glasses are improved by at least a factor of two compared to using standard cones. At 208Pb signal intensity >200 000 cps, external precisions of ratios involving 204Pb are better than 1.3% (2RSD) and precisions of 208Pb/206Pb and 207Pb/206Pb are better than 0.23% (2RSD). The results of Pb isotopes in olivine-hosted melt inclusions, using 45 μm laser spots, show that the internal precisions of 208Pb/206Pb and 207Pb/206Pb for most analyzed melt inclusions are better than 0.2% (2RSE) and for ratios involving 204Pb are better than 0.8% (2RSE). We are able to present the first ever Pb isotope data from ∼260 Ma Emeishan flood basalt olivine-hosted melt inclusions. They show the importance to do age correction which results in the reduction of the spread of data in old samples. The mean values of age-corrected 208Pb/206Pb and 207Pb/206Pb have 1.2% and 2.8% deviations from the uncorrected mean values, respectively. The method developed here provides a fast, precise and accurate in situ Pb isotopic composition analysis, applicable not only to melt inclusions from young basalts, but also from old samples that require correction for U–Th decay.
Starting Page	1393
Ending Page	1405
Page Count	13
File Format	HTM / HTML PDF
ISSN	02679477
Volume Number	29
Issue Number	8
Journal	Journal of Analytical Atomic Spectrometry
DOI	10.1039/c4ja00088a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Lead Isotope Micrometer Laser Laser ablation Ion Uranium Emeishan Traps Flood basalt
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Determination of the isotopic composition of micrometric uranium particles by UV femtosecond laser ablation coupled with sector-field single-collector ICP-MS

Preparation of standards for in situ sulfur isotope measurement in sulfides using femtosecond laser ablation MC-ICP-MS

Simultaneous multi-element and isotope ratio imaging of fish otoliths by laser ablation split stream ICP-MS/MC ICP-MS

Spatially resolved analysis of plutonium isotopic signatures in environmental particle samples by laser ablation-MC-ICP-MS

Matrix effects during laser ablation MC ICP-MS analysis of boron isotopes in tourmaline

Review of the applications of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to the analysis of biological samples

U–Pb age determination for zircons using laser ablation-ICP-mass spectrometry equipped with six multiple-ion counting detectors

Effect of oxygen in sample carrier gas on laser-induced elemental fractionation in U–Th–Pb zircon dating by laser ablation ICP-MS

Editorial: “Metal Isotope Analytical Chemistry for Geological and Environmental Sample”

Lead isotope analysis of melt inclusions by LA-MC-ICP-MS

Similar Documents

Determination of the isotopic composition of micrometric uranium particles by UV femtosecond laser ablation coupled with sector-field single-collector ICP-MS

Preparation of standards for in situ sulfur isotope measurement in sulfides using femtosecond laser ablation MC-ICP-MS

Simultaneous multi-element and isotope ratio imaging of fish otoliths by laser ablation split stream ICP-MS/MC ICP-MS

Spatially resolved analysis of plutonium isotopic signatures in environmental particle samples by laser ablation-MC-ICP-MS

Matrix effects during laser ablation MC ICP-MS analysis of boron isotopes in tourmaline

Review of the applications of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to the analysis of biological samples

U–Pb age determination for zircons using laser ablation-ICP-mass spectrometry equipped with six multiple-ion counting detectors

Effect of oxygen in sample carrier gas on laser-induced elemental fractionation in U–Th–Pb zircon dating by laser ablation ICP-MS

Editorial: “Metal Isotope Analytical Chemistry for Geological and Environmental Sample”

Lead isotope analysis of melt inclusions by LA-MC-ICP-MS