New methods to determine the titanium (Ti) mass-dependent isotope fractionation of solar system materials high precision were developed by combining internally normalised Ti data with double-spike analyses utilising a 47Ti-49Ti double spike. The procedure includes three-stage ion-exchange separation isolate from sample matrix that provides high-purity fractions are necessary for high-precision ...

Introduction: Triple oxygen isotope measurement was once an exclusive practice in meteorite research [1]. Since 1980s, many compounds on Earth have been found to possess triple oxygen isotope compositions that deviate from terrestrial fractionation line [2, 3]. Some of them form minerals and rocks, which can be preserved in geological records and serve as a solid archive for past Earth system h...

Environmental temperature affects water turnover and isotope fractionation by causing water evaporation from the body in mammals. This may lead to rearrangement of the water stable isotope equilibrium in body fluids. We propose an approach to detect possible variations in the isotope ratio in different body fluids on the basis of different homoeothermic adaptations in varying reproductive stage...

Plant sap-feeding insects and blood-feeding parasites are frequently depleted in (15)N relative to their diet. Unfortunately, most fluid-feeder/host nitrogen stable-isotope studies simply report stable-isotope signatures, but few attempt to elucidate the mechanism of isotopic trophic depletion. Here we address this deficit by investigating the nitrogen stable-isotope dynamics of a fluid-feeding...

DIFFERENTIATION. A. Shahar K. Ziegler, E. D. Young, A. Ricolleau, C. A. Macris, E. A. Schauble and Y. Fei, Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd. NW, Washington D.C. 20015, [email protected], Institute of Geophysics and Space Physics, UCLA, 603 Charles Young Drive East, Los Angeles, CA, 90095, Department of Earth and Space Sciences, UCLA, 595 Charles You...