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Coral Ba/Ca Analysis Using ICP-OES With an Ultrasonic Nebulizer

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Geochem. Geophys. Geosyst.22-8_e2021GC009646.pdf6.52 MBPDFView/Open
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Title: Coral Ba/Ca Analysis Using ICP-OES With an Ultrasonic Nebulizer
Authors: Watanabe, Takaaki K. Browse this author
Watanabe, Tsuyoshi Browse this author →KAKEN DB
Ohmori, Kazuto Browse this author
Yamazaki, Atsuko Browse this author
Keywords: Ba
ultrasonic nebulizer
Issue Date: 1-Aug-2021
Publisher: American Geophysical Union
Journal Title: Geochemistry geophysics geosystems
Volume: 22
Issue: 8
Start Page: e2021GC009646
Publisher DOI: 10.1029/2021GC009646
Abstract: The barium/calcium ratio (Ba/Ca) in coral skeletons has been used as a proxy to understand river floods and oceanic upwelling in the tropics and subtropics for the past centuries. Here, we establish a new method for Ba/Ca analysis using inductively coupled plasma optical emission spectrometry (ICP-OES), which has been widely used for coral proxy analyses and can save analysis time compared to other methods. We analyze Ba/Ca by combining an ultrasonic nebulizer with the intensity ratio calibration method to improve the signal intensity of Ba. Our method can determine Ba/Ca in samples with a Ca concentration of 9 mg/L with excellent analytical precision (<0.17 mu mol/mol) using ICP-OES.
Rights: An edited version of this paper was published by AGU. Copyright 2021 American Geophysical Union.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 渡邊 剛

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