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Carbon isotope analysis of dissolved organic carbon in fresh and saline (NaCl) water via continuous flow cavity ring-down spectroscopy following wet chemical oxidation

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Christopher Conaway, Randal B. Thomas, Nabil Saad, James J. Thordsen, and Yousif K. Kharaka, 2015, Carbon isotope analysis of dissolved organic carbon in fresh and saline (NaCl) water via continuous flow cavity ring-down spectroscopy following wet chemical oxidation: Isotopes in Environmental and Health Studies, v. 51, iss. 2.

Summary

This work examines the performance and limitations of a wet chemical oxidation carbon analyser interfaced with a cavity ring-down spectrometer (WCO-CRDS) in a continuous flow (CF) configuration for measuring δ13C of dissolved organic carbon (δ13C-DOC) in natural water samples. Low-chloride matrix (<5 g Cl/L) DOC solutions were analysed with as little as 2.5 mg C/L in a 9 mL aliquot with a precision of 0.5 ‰. In high-chloride matrix (10–100 g Cl/L) DOC solutions, bias towards lighter δ13C-DOC was observed because of incomplete oxidation despite using high-concentration oxidant, extended reaction time, or post-wet chemical oxidation gas-phase combustion. However, through a combination of dilution, chloride removal, and increasing the [...]

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Type Scheme Key
local-index unknown 70134310
local-pk unknown 70134310
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1080/10256016.2015.1009910
series unknown Isotopes in Environmental and Health Studies

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journalIsotopes in Environmental and Health Studies
parts
typevolume
value51
typeissue
value2
languageEnglish
citationTypeArticle

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