Journal ArticleDOI
Isotopic standards for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxide
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In this paper, Niee's and Solenhofen standards were compared to the Chicago PDB standard for carbon and oxygen isotope ratios, and the correction factors for instrumental effects and for the nature of the mass spectra were derived.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1957-01-01. It has received 4071 citations till now. The article focuses on the topics: Carbon & Carbon dioxide.read more
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Carbon Isotope Discrimination and Photosynthesis
TL;DR: In this article, the physical and enzymatic bases of carbone isotope discrimination during photosynthesis were discussed, noting how knowledge of discrimination can be used to provide additional insight into photosynthetic metabolism and the environmental influences on that process.
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Stable isotopes in ecosystem studies
Bruce J. Peterson,Brian Fry +1 more
TL;DR: The use of stable isotopes to solve biogeochemical problems in ecosystem analysis is increasing rapidly because stable isotope data can contribute both source-sink (tracer) and process information: the elements C, N, S, H, and all have more than one isotope, and isotopic compositions of natural materials can be measured with great precision with a mass spectrometer as mentioned in this paper.
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The use of bromine pentafluoride in the extraction of oxygen from oxides and silicates for isotopic analysis
TL;DR: In this paper, a technique was developed in which bromine pentafluoride was used as a reagent for quantitative liberation of oxygen from oxides and silicates, and the results of isotopic analyses were compared with measurements made in other laboratories by other procedures.
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Isotopic Composition of Plant Carbon Correlates With Water-Use Efficiency of Wheat Genotypes
TL;DR: It is suggested that carbon-isotope analysis may be a useful tool in selection for improved water-use efficiency in breeding programmes for C3 species.
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Carbon isotope fractionation in plants
TL;DR: In this paper, the authors present a mathematical model to predict the overall isotope discrimination in terms of diffusion, interconversion, incorporation, and respiration in C 3, C 4 and crassulacean acid metabolism (CAM) photosynthetic pathways.
References
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Natural variations in the isotopic content of sulphur and their significance.
TL;DR: In general, sulphates whether present as gypsum deposits or in solution were found to be enriched in the heavier isotopes of sulphur, and the hydrogen sulphide of sulphuretted well waters was usually low in these isotopes even though present in the same solutions with the sulphates.
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A null method for the comparison of two ion currents in a mass spectrometer.
TL;DR: Although applied only to the case of making precise measurement of ratio of two ion currents in a mass spectrometer for the purpose of measuring the relative abundance of isotopes, the method would be useful in other applications as well.