Precise determination of Sr/Ca by laser ablation ICP-MS compared to ICP-AES and application to multi-century temperate corals

Yuta Kawakubo; Yusuke Yokoyama; Atsushi Suzuki; Takashi Okai; Chantal Alibert; Leslie Kinsley; Stephen Eggins

doi:10.2343/geochemj.2.0295

Precise determination of Sr/Ca by laser ablation ICP-MS compared to ICP-AES and application to multi-century temperate corals

Yuta Kawakubo
, Yusuke Yokoyama^*
, Atsushi Suzuki
, Takashi Okai
, Chantal Alibert
, Leslie Kinsley
, Stephen Eggins

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

Coral skeletal Sr/Ca compositions are valuable tools for the reconstruction of past tropical climate. While solution-based ICP-AES has become the preferred method to obtain monthly-resolved Sr/Ca records as proxy for sea-surface temperature (SST), laser ablation ICP-MS (LA-ICP-MS) allows a more rapid and still precise analysis of multiple elemental ratios at higher spatial resolution and, measurements can easily be replicated. However, the methodology still needs to be refined for long corals. It is applied here to a 435 year old Pontes coral from the temperate region of southern Japan. Sr/Ca ratios measured by LA-ICP-MS and ICP-AES for three 10-15 yr periods are shown to be highly consistent. Resolution, data processing and Sr/Ca-SST calibration issues are discussed, and a replicate strategy is proposed to ensure high-precision Sr/Ca records from multi-century corals using LA-ICP-MS.

Original language	English
Pages (from-to)	145-152
Number of pages	8
Journal	Geochemical Journal
Volume	48
Issue number	2
DOIs	https://doi.org/10.2343/geochemj.2.0295
Publication status	Published - 2014

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10.2343/geochemj.2.0295

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title = "Precise determination of Sr/Ca by laser ablation ICP-MS compared to ICP-AES and application to multi-century temperate corals",

abstract = "Coral skeletal Sr/Ca compositions are valuable tools for the reconstruction of past tropical climate. While solution-based ICP-AES has become the preferred method to obtain monthly-resolved Sr/Ca records as proxy for sea-surface temperature (SST), laser ablation ICP-MS (LA-ICP-MS) allows a more rapid and still precise analysis of multiple elemental ratios at higher spatial resolution and, measurements can easily be replicated. However, the methodology still needs to be refined for long corals. It is applied here to a 435 year old Pontes coral from the temperate region of southern Japan. Sr/Ca ratios measured by LA-ICP-MS and ICP-AES for three 10-15 yr periods are shown to be highly consistent. Resolution, data processing and Sr/Ca-SST calibration issues are discussed, and a replicate strategy is proposed to ensure high-precision Sr/Ca records from multi-century corals using LA-ICP-MS.",

keywords = "Coral, ICP-AES, Laser ablation ICP-MS, Sr/Ca",

author = "Yuta Kawakubo and Yusuke Yokoyama and Atsushi Suzuki and Takashi Okai and Chantal Alibert and Leslie Kinsley and Stephen Eggins",

note = "Publisher Copyright: Copyright {\textcopyright} 2014 by The Geochemical Society of Japan.",

year = "2014",

doi = "10.2343/geochemj.2.0295",

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volume = "48",

pages = "145--152",

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TY - JOUR

T1 - Precise determination of Sr/Ca by laser ablation ICP-MS compared to ICP-AES and application to multi-century temperate corals

AU - Kawakubo, Yuta

AU - Yokoyama, Yusuke

AU - Suzuki, Atsushi

AU - Okai, Takashi

AU - Alibert, Chantal

AU - Kinsley, Leslie

AU - Eggins, Stephen

PY - 2014

Y1 - 2014

N2 - Coral skeletal Sr/Ca compositions are valuable tools for the reconstruction of past tropical climate. While solution-based ICP-AES has become the preferred method to obtain monthly-resolved Sr/Ca records as proxy for sea-surface temperature (SST), laser ablation ICP-MS (LA-ICP-MS) allows a more rapid and still precise analysis of multiple elemental ratios at higher spatial resolution and, measurements can easily be replicated. However, the methodology still needs to be refined for long corals. It is applied here to a 435 year old Pontes coral from the temperate region of southern Japan. Sr/Ca ratios measured by LA-ICP-MS and ICP-AES for three 10-15 yr periods are shown to be highly consistent. Resolution, data processing and Sr/Ca-SST calibration issues are discussed, and a replicate strategy is proposed to ensure high-precision Sr/Ca records from multi-century corals using LA-ICP-MS.

AB - Coral skeletal Sr/Ca compositions are valuable tools for the reconstruction of past tropical climate. While solution-based ICP-AES has become the preferred method to obtain monthly-resolved Sr/Ca records as proxy for sea-surface temperature (SST), laser ablation ICP-MS (LA-ICP-MS) allows a more rapid and still precise analysis of multiple elemental ratios at higher spatial resolution and, measurements can easily be replicated. However, the methodology still needs to be refined for long corals. It is applied here to a 435 year old Pontes coral from the temperate region of southern Japan. Sr/Ca ratios measured by LA-ICP-MS and ICP-AES for three 10-15 yr periods are shown to be highly consistent. Resolution, data processing and Sr/Ca-SST calibration issues are discussed, and a replicate strategy is proposed to ensure high-precision Sr/Ca records from multi-century corals using LA-ICP-MS.

KW - Coral

KW - ICP-AES

KW - Laser ablation ICP-MS

KW - Sr/Ca

UR - https://www.scopus.com/pages/publications/84925666734

U2 - 10.2343/geochemj.2.0295

DO - 10.2343/geochemj.2.0295

M3 - Article

SN - 0016-7002

VL - 48

SP - 145

EP - 152

JO - Geochemical Journal

JF - Geochemical Journal

IS - 2

ER -

Precise determination of Sr/Ca by laser ablation ICP-MS compared to ICP-AES and application to multi-century temperate corals

Abstract

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