Sealed Tube Combustions for Determination of Carbon- 14 and Total Carbon

Buchanan, Donald L.; Corcoran, B. J.

doi:10.1021/ac60154a025

Cited by 105 publications

(30 citation statements)

References 16 publications

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“…Samples for δ 13 C POM and δ 13 C PHY measurements were acidified with dilute hydrochloric acid and oven-dried overnight at 60°C just prior to carbon isotope determination. Particulate organic matter was converted into CO 2 using the high-temperature (850°C, 5 h) sealed-quartz tube combustion method with copper oxide as oxidant (Buchanan and Corcoran, 1959) as the low-temperature (550°C, 1 h) combustion method can lead to large analytical uncertainty (Tao et al, 2001).…”

Section: Methodsmentioning

confidence: 99%

Mechanisms controlling the carbon stable isotope composition of phytoplankton in karst reservoirs

et al. 2013

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Section: Methodsmentioning

confidence: 99%

Mechanisms controlling the carbon stable isotope composition of phytoplankton in karst reservoirs

et al. 2013

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“…The average precision of this method for %OC and atomic C : N was + 1.5% of the measured value for plant tissues and fine-grained sediments and * 3% for the more heterogeneous coarse-grained sediments. Stable carbon isotope compositions were determined by the sealed-tube combustion method (Buchanan and Corcoran 1959) and are reported as parts per thousand relative variation (6) from the PDB standard (Craig 1953). The average precision of this measurement was 20. lo/o0 for plant tissues and fine sediments and +0.2a/oo for coarse sediments.…”

Section: Methodsmentioning

confidence: 99%

Compositions and fluxes of particulate organic material in the Amazon River1

Hedges

Clark

Quay

et al. 1986

Limnology & Oceanography

791

512

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“…The envelope was placed in a quartz ampule, which was evacuated and flame sealed, based on modifications to the procedure described by Buchanan & Corcoran (1959). Ampules were combusted at 900°C for 3 h and allowed to cool.…”

Section: Methodsmentioning

confidence: 99%

Processes that influence carbon isotope variations in salt marsh sediments

Ember¹,

Williams²,

Morris³

1987

Mar. Ecol. Prog. Ser.

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Salt marsh sedimentary organic matter (SOM) is a mixture of organic carbon from several sources difficult to identify quantitatively. Geochemical analyses of sediment cores at 4 sites in salt marshes at North Inlet, South Carolina (USA), dominated by Spartina alterniflora, were used to investigate accumulation and diagenesis of organic matter in sediments. Stable carbon isotope ratios ( 6 C ) and concentrations of organic carbon in the fine fraction of SOM ranged from -22 to -17 %O and 2 to 9 %, respectively. 6Â° values were significantly more positive in sediments from a short-form Spartina zone than from intermediate or tall-form Spartina areas. Samples from the site dominated by short-form S. alterniflora also contained significantly higher amounts of organic carbon than sites closer to the tidal creek, and demonstrated a positive correlation between organic carbon content and isotopically more positive 6Â° values. Spartina litter buried for 1.25 yr and Spartina lignin had 613C values of -15.35 and -16.34 %o respectively and were significantly more depleted in "C than fresh S. alterniflora (-13.63 %o), but not as depleted as the fine fraction of SOM. However, litter harvested from the marsh surface after 1.25 yr of decomposition had a S1^C value of -13.75 %o. The S^C values of SOM appear to be influenced by a combination of processes, including the selective preservation of isotopically hght refractory carbon, aerobic and anaerobic decay processes, sedimentation of allochthonous carbon from plankton or terrestrial sources, and bioturbation.

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Sealed Tube Combustions for Determination of Carbon- 14 and Total Carbon

Cited by 105 publications

References 16 publications

Mechanisms controlling the carbon stable isotope composition of phytoplankton in karst reservoirs

Mechanisms controlling the carbon stable isotope composition of phytoplankton in karst reservoirs

Compositions and fluxes of particulate organic material in the Amazon River1

Processes that influence carbon isotope variations in salt marsh sediments

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