منابع مشابه
Boron isotope fractionation during brucite deposition
Boron isotope fractionation during brucite deposition from artificial seawater J. Xiao, Y. K. Xiao, C. Q. Liu, and Z. D. Jin State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710075, China Qinghai Institute of Salk Lakes, Chinese Academy of Sciences, Xining, Qinghai, 810008, China State Key Laboratory of Environmental Geoch...
متن کاملBoron isotope fractionation in magma via crustal carbonate dissolution
Carbon dioxide released by arc volcanoes is widely considered to originate from the mantle and from subducted sediments. Fluids released from upper arc carbonates, however, have recently been proposed to help modulate arc CO2 fluxes. Here we use boron as a tracer, which substitutes for carbon in limestone, to further investigate crustal carbonate degassing in volcanic arcs. We performed laborat...
متن کاملTemperature Dependence of Carbon Isotope Fractionation in CAM Plants.
The carbon isotope fractionation associated with nocturnal malic acid synthesis in Kalanchoë daigremontiana and Bryophyllum tubiflorum was calculated from the isotopic composition of carbon-4 of malic acid, after appropriate corrections. In the lowest temperature treatment (17 degrees C nights, 23 degrees C days), the isotope fractionation for both plants is -4 per thousand (that is, malate is ...
متن کاملShort-term measurement of carbon isotope fractionation in plants.
Combustion-based studies of the carbon-13 content of plants give only an integrated, long-term value for the isotope fractionation associated with photosynthesis. A method is described here which permits determination of this isotope fractionation in 2 to 3 hours. To accomplish this, the plant is enclosed in a glass chamber, and the quantity and isotopic content of the CO(2) remaining in the at...
متن کاملICP-MS Measurement of 11B/10B Isotope Ratios in Grapevine Leaves and the Investigation of Possible Boron Isotope Fractionation in Grapevine Plants
S. Afr. J. Enol. Vitic., Vol. 32, No. 1, 2011 *Corresponding author: [email protected] [Tel: +27 (0)11 5592558; Fax: +27 (0)11 5592819] Acknowledgements: The authors thank Winetech (Project No. WW08/28), for research funding, Dr O. Augustyn (ARC-Nietvoorbij, Stellenbosch), for sourcing and collecting wine samples, and Prof C.S. Whitehead and M. Fourie (Department of Botany and Plant Biotechnol...
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ژورنال
عنوان ژورنال: Canadian Journal of Plant Science
سال: 1997
ISSN: 0008-4220,1918-1833
DOI: 10.4141/p97-010