Precise 66Zn/64Zn and 68Zn/64Zn isotopic ratios of biochemical samples have been measured using multiple collector-ICP-mass spectrometry (MC-ICPMS). In order to eliminate the mass spectrometric interferences on Zn isotopes (e.g., 64Ni+ and 136Ba2+), we chemically purified the analyte using an ion chromatographic technique. The resulting precisions of the 66Zn/64Zn and 68Zn/64Zn ratio measuremen...

background: 66ga (t1/2=9.49 h, β+: 4.153 mev, γ: 511, 834, 1039, 2752 kev) has a wide range of applications in different fields of medical sciences. production of 66ga became one of our main interests, according to its increasing applications in nuclear medicine, particularly in pet imaging. materials and methods: 66 zn (p,n)66ga reaction was determined as the best choice for the production of ...

Cu and Zn have naturally occurring non radioactive isotopes, and their isotopic systematics in a biological context are poorly understood. In this study we used double focussing mass spectroscopy to determine the ratios for these isotopes for the first time in mouse brain. The Cu and Zn isotope ratios for four strains of wild-type mice showed no significant difference (delta 65Cu -0.12 to -0.78...

Metalloproteins (metal-binding proteins) refer to proteins containing metal ion cofactors. The importance of these proteins has increased owing to their involvement in many biological processes. Here, we introduce an analytical platform based on online coupling of miniaturized asymmetrical flow field-flow fractionation (mAF4) and inductively coupled plasma mass spectrometry (ICPMS) for size sep...

Zinc and Cd isotope compositions are presented for a comprehensive suite of terrestrial rocks to constrain the extent Zn fractionation during igneous processes better define ?66Zn ?114Cd values silicate Earth (the ? denote per mille deviations 66Zn/64Zn from JMC Lyon 114Cd/110Cd NIST SRM 3108 Cd). Analyses spinel lherzolites provide bulk (BSE) ?114CdBSE value –0.06 ± 0.03 ‰ (2SD). For Zn, perid...

Zinc isotopic compositions (?66ZnJMC-Lyon) of low-MgO (<13 wt.%) and high-MgO (>16 eclogites from the Koidu kimberlite complex, Sierra Leone, West African Craton, help constrain origins cratonic eclogites. The ?66Zn range MORB-like to significantly higher values (0.21‰ 0.75‰), correlate inversely with Zn concentrations. Since marine carbonates are characterized by lower concentration than basal...

Background: 66Ga (t1/2=9.49 h, β+: 4.153 MeV, γ: 511, 834, 1039, 2752 keV) has a wide range of applications in different fields of medical sciences. Production of 66Ga became one of our main interests, according to its increasing applications in nuclear medicine, particularly in PET imaging. Materials and Methods: 66 Zn (p,n)66Ga reaction was determined as the best choice for the production of ...

The thermal evolution of the shell correction energy is investigated for deformed nuclei using Strutinsky prescription in a self-consistent relativistic mean-field framework. For temperature independent single-particle states corresponding to either spherical or deformed nuclear shapes, the shell correction energy ∆sc steadily washes out with temperature. However, for states pertaining to the s...