Comparison of δ18O analyses on individual planktic foraminifer (Orbulina universa) shells by SIMS and gas-source mass spectrometry
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چکیده
منابع مشابه
Micron-scale intrashell oxygen isotope variation in cultured planktic foraminifers
In this study, we show that the rate of shell precipitation in the extant planktic foraminifer Orbulina universa is sufficiently rapid that 12 h calcification periods in O-labeled seawater can be resolved and accurately measured using secondary ion mass spectrometry (SIMS) for in situ dO analyses. Calcifying O. universa held at constant temperature (22 C) were transferred every 12 h between amb...
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Abstract Background and Objective: Perchloroethylene (PCE) is a chlorinated hydrocarbon used as a solvent in many industrial processes. In contaminated water and soil a great deal of PCE is found. This study aimed to determine the rate of decomposition of PCE occurred after advanced oxidation. Material and Methods: In this descriptive-analytic study conducted (2011) in public health faculty...
متن کاملTemperature influence on the carbon isotopic composition of Globigerina bulloides and Orbulina universa (planktonic foraminifera)
Laboratory experiments with the planktonic foraminifera Globigerina bulloides (nonsymbiotic) and Orbulina universa (symbiotic) were carried out to examine the effects of temperature, irradiance (symbiont photosynthesis), [CO 3 ], and ontogeny on shell δ13C values. In ambient seawater ([CO 3 ] D 171 μmol kg 1), the δ13C of G. bulloides shells decreases 0.11‰ oC , a pattern that likely results fr...
متن کاملOxygen isotopic analyses of individual planktic foraminifera species
Introduction Conclusions References
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ژورنال
عنوان ژورنال: Chemical Geology
سال: 2018
ISSN: 0009-2541
DOI: 10.1016/j.chemgeo.2018.02.028