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GEOTRACES inter-cal...
GEOTRACES inter-calibration of the stable silicon isotope composition of dissolved silicic acid in seawater
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Grasse, Patricia (author)
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Brzezinski, Mark A. (author)
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Cardinal, Damien (author)
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de Souza, Gregory F. (author)
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Andersson, Per (author)
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Closset, Ivia (author)
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Cao, Zhimian (author)
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Dai, Minhan (author)
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Ehlert, Claudia (author)
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Estrade, Nicolas (author)
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Francois, Roger (author)
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Frank, Martin (author)
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Jiang, Guibin (author)
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Jones, Janice L. (author)
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Kooijman, Ellen (author)
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Liu, Qian (author)
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Lu, Dawei (author)
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Pahnke, Katharina (author)
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Ponzevera, Emanuel (author)
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Schmitt, Melanie (author)
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- Sun, Xiaole (author)
- Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
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Sutton, Jill N. (author)
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Thil, Francois (author)
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Weis, Dominique (author)
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Wetzel, Florian (author)
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Zhang, Anyu (author)
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Zhang, Jing (author)
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Zhang, Zhouling (author)
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(creator_code:org_t)
- 2017
- 2017
- English.
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In: Journal of Analytical Atomic Spectrometry. - : Royal Society of Chemistry (RSC). - 0267-9477 .- 1364-5544. ; 32:3, s. 562-578
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https://archimer.ifr...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- The first inter-calibration study of the stable silicon isotope composition of dissolved silicic acid in seawater, delta Si-30(OH)(4), is presented as a contribution to the international GEOTRACES program. Eleven laboratories from seven countries analyzed two seawater samples from the North Pacific subtropical gyre (Station ALOHA) collected at 300 m and at 1000 m water depth. Sampling depths were chosen to obtain samples with a relatively low (9 mmol L-1, 300 m) and a relatively high (113 mmol L-1, 1000 m) silicic acid concentration as sample preparation differs for low- and highconcentration samples. Data for the 1000 m water sample were not normally distributed so the median is used to represent the central tendency for the two samples. Median delta Si-30(OH)(4) values of +1.66& for the low-concentration sample and +1.25& for the high-concentration sample were obtained. Agreement among laboratories is overall considered very good; however, small but statistically significant differences among the mean isotope values obtained by different laboratories were detected, likely reflecting inter-laboratory differences in chemical preparation including pre-concentration and purification methods together with different volumes of seawater analyzed, and the use of different mass spectrometers including the Neptune MC-ICP-MS (Thermo Fisher (TM), Germany), the Nu Plasma MC-ICP-MS (Nu Instruments (TM), Wrexham, UK), and the Finnigan (TM) (now Thermo Fisher (TM), Germany) MAT 252 IRMS. Future studies analyzing delta Si-30(OH)(4) in seawater should also analyze and report values for these same two reference waters in order to facilitate comparison of data generated among and within laboratories over time.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Grasse, Patricia
-
Brzezinski, Mark ...
-
Cardinal, Damien
-
de Souza, Gregor ...
-
Andersson, Per
-
Closset, Ivia
-
show more...
-
Cao, Zhimian
-
Dai, Minhan
-
Ehlert, Claudia
-
Estrade, Nicolas
-
Francois, Roger
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Frank, Martin
-
Jiang, Guibin
-
Jones, Janice L.
-
Kooijman, Ellen
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Liu, Qian
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Lu, Dawei
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Pahnke, Katharin ...
-
Ponzevera, Emanu ...
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Schmitt, Melanie
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Sun, Xiaole
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Sutton, Jill N.
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Thil, Francois
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Weis, Dominique
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Wetzel, Florian
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Zhang, Anyu
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Zhang, Jing
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Zhang, Zhouling
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show less...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Other Engineerin ...
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Journal of Analy ...
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Stockholm University