An alternate method of diluting dissolved organic carbon seawater samples for 14C analysis

Sheila Griffin; Steven R. Beaupré; Ellen R.M. Druffel

doi:10.1017/S0033822200046300

An alternate method of diluting dissolved organic carbon seawater samples for ¹⁴C analysis

Sheila Griffin
, Steven R. Beaupré
, Ellen R.M. Druffel

Office of the Dean SOMAS

University of California at Irvine

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18 Scopus citations

Abstract

We present a time-saving modification to the ultraviolet (UV) oxidation method for analyzing dissolved organic carbon (DOC) concentration, Δ¹⁴C, and δ¹³C measurements in seawater and standard materials. A low background (~0.2 ± 0.2 μM) was reported for pre-irradiated Milli-Q (MQ) water that was used to dilute samples for DOC ¹⁴C analysis (Beaupré et al. 2007). We use MQ water without pre-irradiation (background ~0.9 ± 0.2 μM) to dilute the sample. This method is suitable for small-volume, high-concentration samples (mass of sample DOC overwhelms mass of MQ water DOC). An acceptable precision of Δ¹⁴C measurements (5-9‰) is maintained. This revised method reduces the preparation time for diluted DOC Δ¹⁴C samples from 2 days to 1 day.

Original language	English
Pages (from-to)	1224-1229
Number of pages	6
Journal	Radiocarbon
Volume	52
Issue number	3
DOIs	https://doi.org/10.1017/S0033822200046300
State	Published - Aug 2010

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title = "An alternate method of diluting dissolved organic carbon seawater samples for 14C analysis",

abstract = "We present a time-saving modification to the ultraviolet (UV) oxidation method for analyzing dissolved organic carbon (DOC) concentration, Δ14C, and δ13C measurements in seawater and standard materials. A low background (\textasciitilde{}0.2 ± 0.2 μM) was reported for pre-irradiated Milli-Q (MQ) water that was used to dilute samples for DOC 14C analysis (Beaupr{\'e} et al. 2007). We use MQ water without pre-irradiation (background \textasciitilde{}0.9 ± 0.2 μM) to dilute the sample. This method is suitable for small-volume, high-concentration samples (mass of sample DOC overwhelms mass of MQ water DOC). An acceptable precision of Δ14C measurements (5-9‰) is maintained. This revised method reduces the preparation time for diluted DOC Δ14C samples from 2 days to 1 day.",

author = "Sheila Griffin and Beaupr{\'e}, \{Steven R.\} and Druffel, \{Ellen R.M.\}",

year = "2010",

month = aug,

doi = "10.1017/S0033822200046300",

language = "English",

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T1 - An alternate method of diluting dissolved organic carbon seawater samples for 14C analysis

AU - Griffin, Sheila

AU - Beaupré, Steven R.

AU - Druffel, Ellen R.M.

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Y1 - 2010/8

N2 - We present a time-saving modification to the ultraviolet (UV) oxidation method for analyzing dissolved organic carbon (DOC) concentration, Δ14C, and δ13C measurements in seawater and standard materials. A low background (~0.2 ± 0.2 μM) was reported for pre-irradiated Milli-Q (MQ) water that was used to dilute samples for DOC 14C analysis (Beaupré et al. 2007). We use MQ water without pre-irradiation (background ~0.9 ± 0.2 μM) to dilute the sample. This method is suitable for small-volume, high-concentration samples (mass of sample DOC overwhelms mass of MQ water DOC). An acceptable precision of Δ14C measurements (5-9‰) is maintained. This revised method reduces the preparation time for diluted DOC Δ14C samples from 2 days to 1 day.

AB - We present a time-saving modification to the ultraviolet (UV) oxidation method for analyzing dissolved organic carbon (DOC) concentration, Δ14C, and δ13C measurements in seawater and standard materials. A low background (~0.2 ± 0.2 μM) was reported for pre-irradiated Milli-Q (MQ) water that was used to dilute samples for DOC 14C analysis (Beaupré et al. 2007). We use MQ water without pre-irradiation (background ~0.9 ± 0.2 μM) to dilute the sample. This method is suitable for small-volume, high-concentration samples (mass of sample DOC overwhelms mass of MQ water DOC). An acceptable precision of Δ14C measurements (5-9‰) is maintained. This revised method reduces the preparation time for diluted DOC Δ14C samples from 2 days to 1 day.

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DO - 10.1017/S0033822200046300

M3 - Article

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SN - 0033-8222

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SP - 1224

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JO - Radiocarbon

JF - Radiocarbon

IS - 3

ER -

An alternate method of diluting dissolved organic carbon seawater samples for ¹⁴C analysis

Abstract

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