Relevant bibliographies by topics / Carbon Isotopes; Isotopic analysis; Organic residues

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Carbon Isotopes; Isotopic analysis; Organic residues'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Carbon Isotopes; Isotopic analysis; Organic residues"

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Witt, Bradd. "Century-scale environmental reconstruction by using stable carbon isotopes: just one method from the big bag of tricks." Australian Journal of Botany 50, no. 4 (2002): 441. http://dx.doi.org/10.1071/bt02006.

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The field of 'historical ecology' is coming to maturity at a time when we, in Australia, are reflecting on our relationship with, and place in, the land. After an essentially ahistorical approach to land use we are now attempting to place land management into the context of environmental change since and immediately preceding Western European settlement. This volume reflects an emerging concern that, collectively, non-indigenous Australians have no 'environmental history'. One component of 'living in' rather than 'battling against' the land is developing a sense of our history. Without an oral
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Magioncalda, Roberto, Christian Dupuis, Dominique Blamart, et al. "L'excursion isotopique du carbone organique (delta 13 C org ) dans les paleoenvironnements continentaux de l'intervalle Paleocene/Eocene de Varangeville (Haute-Normandie)." Bulletin de la Société Géologique de France 172, no. 3 (2001): 349–58. http://dx.doi.org/10.2113/172.3.349.

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Abstract The late Palaeocene carbon isotope excursion (C.I.E.) is often regarded as the best means of correlating marine and continental deposits. The few isotopic studies carried out in continental environments were based on pedogenic carbonate [Koch et al., 1992], or on organic matter. Sinha [1997] took up this subject starting from the outcrops on the coast of the English Channel at Varangeville, where marine sequences biostratigraphically constrain the isotopic excursion. His work documents a negative delta 13 C org excursion value approximately -27 per mil PDB. The present work points out
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Hanke, U. M., L. Wacker, N. Haghipour, M. W. I. Schmidt, T. I. Eglinton, and C. P. McIntyre. "Comprehensive radiocarbon analysis of benzene polycarboxylic acids (BPCAs) derived from pyrogenic carbon in environmental samples." Radiocarbon 59, no. 4 (2017): 1103–16. http://dx.doi.org/10.1017/rdc.2017.44.

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ABSTRACTCompound-specific radiocarbon analysis (CSRA) of benzene polycarboxylic acids (BPCAs) yields molecular-level, source-specific information necessary to constrain isotopic signatures of pyrogenic carbon. However, the purification of individual BPCAs requires a multistep procedure that typically results in only microgram quantities of the target analyte(s). Such small samples are highly susceptible to contamination by extraneous carbon, which needs to be minimized and carefully accounted for in order to yield accurate results. Here, we undertook comprehensive characterization and quantifi
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Fuller, Mark E., Linnea Heraty, Charles W. Condee, et al. "Relating Carbon and Nitrogen Isotope Effects to Reaction Mechanisms during Aerobic or Anaerobic Degradation of RDX (Hexahydro-1,3,5-Trinitro-1,3,5-Triazine) by Pure Bacterial Cultures." Applied and Environmental Microbiology 82, no. 11 (2016): 3297–309. http://dx.doi.org/10.1128/aem.00073-16.

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ABSTRACTKinetic isotopic fractionation of carbon and nitrogen during RDX (hexahydro-1,3,5-trinitro-1,3,5-triazine) biodegradation was investigated with pure bacterial cultures under aerobic and anaerobic conditions. Relatively large bulk enrichments in15N were observed during biodegradation of RDX via anaerobic ring cleavage (ε15N = −12.7‰ ± 0.8‰) and anaerobic nitro reduction (ε15N = −9.9‰ ± 0.7‰), in comparison to smaller effects during biodegradation via aerobic denitration (ε15N = −2.4‰ ± 0.2‰).13C enrichment was negligible during aerobic RDX biodegradation (ε13C = −0.8‰ ± 0.5‰) but larger
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Ramnarine, R., C. Wagner-Riddle, K. E. Dunfield, and R. P. Voroney. "Contributions of carbonates to soil CO2 emissions." Canadian Journal of Soil Science 92, no. 4 (2012): 599–607. http://dx.doi.org/10.4141/cjss2011-025.

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Ramnarine, R., Wagner-Riddle, C., Dunfield, K. E. and Voroney, R. P. 2012. Contributions of carbonates to soil CO 2 emissions. Can. J. Soil Sci. 92: 599–607. Carbon dioxide (CO2) is released in soil as a by-product of microbial and root respiration, but soil carbonates may also be a source of CO2 emissions in calcareous soils. Global estimates of inorganic carbon range from 700 to 900 Pg as carbonates stored in soils, representing a significant potential source of CO2 to the atmosphere. While previous studies have focused on the total CO2 efflux from the soil, our goal was to identify the vari
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Barešić, Jadranka, Sanja Faivre, Andreja Sironić, et al. "The Potential of Tufa as a Tool for Paleoenvironmental Research—A Study of Tufa from the Zrmanja River Canyon, Croatia." Geosciences 11, no. 9 (2021): 376. http://dx.doi.org/10.3390/geosciences11090376.

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Tufa is a fresh-water surface calcium carbonate deposit precipitated at or near ambient temperature, and commonly contains the remains of macro- and microphytes. Many Holocene tufas are found along the Zrmanja River, Dalmatian karst, Croatia. In this work we present radiocarbon dating results of older tufa that was found for the first time at the Zrmanja River near the Village of Sanaderi. Tufa outcrops were observed at different levels, between the river bed and up to 26 m above its present level. Radiocarbon dating of the carbonate fraction revealed ages from modern, at the river bed, up to
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Choy, Kyungcheol, Ben A. Potter, Holly J. McKinney, Joshua D. Reuther, Shiway W. Wang, and Matthew J. Wooller. "Chemical profiling of ancient hearths reveals recurrent salmon use in Ice Age Beringia." Proceedings of the National Academy of Sciences 113, no. 35 (2016): 9757–62. http://dx.doi.org/10.1073/pnas.1606219113.

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Current approaches to reconstruct subsistence and dietary trends in ancient hunter-gatherer societies include stable isotope analyses, but these have focused on human remains, cooking pottery, and food residues, which are relatively rare in the archaeological record. In contrast, short-term hearths are more ubiquitous worldwide, and these features can provide valuable evidence for ancient subsistence practices, particularly when faunal remains are not preserved. To test the suitability of hearths for this purpose, we conducted multiple chemical analyses: stable carbon and nitrogen isotope anal
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Megens, Luc, Johannes Van Der Plicht, and Jan W. De Leeuw. "Molecular, Radioactive and Stable Carbon Isotope Characterization of Estuarine Particulate Organic Matter." Radiocarbon 40, no. 2 (1997): 985–90. http://dx.doi.org/10.1017/s0033822200018956.

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Organic matter in sediments and suspended matter is a complex mixture of constituents with different histories, sources and stabilities. To study these components in a suspended matter sample from the Ems-Dollard Estuary, we used combined molecular analysis with pyrolysis/gas chromatography/mass spectrometry and stable and radioactive carbon isotope analyses of the bulk and separated chemical fractions. Carbohydrates and proteins, ca. 50% of the total organic carbon (TOC), are much younger than the bulk sample and have a somewhat higher δ13C value. Lipids and the final residue are considerably
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Kayler, Z. E., M. Kaiser, A. Gessler, R. H. Ellerbrock та M. Sommer. "Application of δ<sup>13</sup>C and δ<sup>15</sup>N isotopic signatures of organic matter fractions sequentially separated from adjacent arable and forest soils to identify carbon stabilization mechanisms". Biogeosciences 8, № 10 (2011): 2895–906. http://dx.doi.org/10.5194/bg-8-2895-2011.

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Abstract. Identifying the chemical mechanisms behind soil carbon bound in organo-mineral complexes is necessary to determine the degree to which soil organic carbon is stabilized belowground. Analysis of δ13C and δ15N isotopic signatures of stabilized OM fractions along with soil mineral characteristics may yield important information about OM-mineral associations and their processing history. We anlayzed the δ13C and δ15N isotopic signatures from two organic matter (OM) fractions along with soil mineral proxies to identify the likely binding mechanisms involved. We analyzed OM fractions hypot
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Šoberl, Lucija, Andreja Žibrat Gašparič, Mihael Budja, and Richard P. Evershed. "Early herding practices revealed through organic residue analysis of pottery from the early Neolithic rock shelter of Mala Triglavca, Slovenia." Documenta Praehistorica 35 (December 31, 2008): 253–60. http://dx.doi.org/10.4312/dp.35.19.

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A collection of pottery from the early Neolithic site of Mala Triglavca was analysed with the aim of obtaining insights into vessel use and early animal domestication and husbandry practices in the Adriatic region. Total lipid extracts were submitted to gas chromatography (GC), GC-mass spectrometry (GC-MS) and GC-combustion-isotope ratio MS (GC-C-IRMS) in order to obtain molecular and stable carbon isotope signatures as the basis for determining the nature and origins of the residues. The extracts were dominated by degraded animal fats. The majority (70%) of the total lipid extracts displayed
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Dissertations / Theses on the topic "Carbon Isotopes; Isotopic analysis; Organic residues"

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Craig, O. E., R. B. Allen, A. Thompson, R. E. Stevens, Valerie J. Steele, and Carl P. Heron. "Distinguishing wild ruminant lipids by gas chromatography/combustion/isotope ratio mass spectrometry." 2012. http://hdl.handle.net/10454/5945.

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No<br>RATIONALE: The carbon isotopic characterisation of ruminant lipids associated with ceramic vessels has been crucial for elucidating the origins and changing nature of pastoral economies. delta(13)C values of fatty acids extracted from potsherds are commonly compared with those from the dairy and carcass fats of modern domesticated animals to determine vessel use. However, the processing of wild ruminant products in pottery, such as deer, is rarely considered despite the presence of several different species on many prehistoric sites. To address this issue, the carbon isotope range of fat
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Mukherjee, A. J., Alex M. Gibson, and R. P. Evershed. "Trends in pig product processing at British Neolithic Grooved Ware sites traced through organic residues in potsherds." 2008. http://hdl.handle.net/10454/6111.

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No<br>Gas chromatography (GC), GC-mass spectrometry (GC-MS) and GC-combustion-isotope ratio MS (GC-C-IRMS) analyses of absorbed and surface lipid residues preserved in potsherds were used to explore the extent of pig product processing exploitation in the later British Neolithic Grooved Ware tradition. Assessments were made regarding whether porcine lipids were associated with specific Grooved Ware traits, i.e. decoration, substyle, geographical area and type of site. Two hundred and twenty-two Grooved Ware potsherds were analysed, 70% of which contained lipid concentrations considered signifi
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