PPT-Variability in chemical and stable isotopic characteristics

Rajesh Agnihotri 1 SG Karapurkar 2 VVSS Sarma 3 P Praveen 3 MD Dileep Kumar 2   1 CSIRNational Physical Laboratory New Delhi 110012 India 2 CSIRNational Institute of Oceanography Dona Paula Goa 403004 India . pe Geochemistry Theory. Lecture 34 . Beginnings. Stable isotope geochemistry is concerned with variations in the isotopic compositions of elements arising . small . differences in the chemical behavior of different isotopes of an . Helium-3, He. Physical and chemical propertiesChemical purity Chemical PurityCOMPONENT SPECIFICATIONS (MOLEMOLEOxygen (ppm)Nitrogen (ppm) Helium-3, He. 2 of 2 Linde North America Inc. is a member of T Lecture 31 . Mass Dependent Fractionation. . If . a 4‰ fractionation of . δ. 18. O . is observed in a particular sample, what value of . δ. 17. O . do we predict? . We might guess it would ½ as much. . Intro to Biology. EQ: What . are the . c. haracteristics . of . l. iving . t. hings?. What makes something living DIFFERENT from something non-living. ? . Think and discuss . There are actually 8 characteristics that will tell you if something is alive.. Lecture 30 . Beginnings. Stable isotope geochemistry is concerned with variations in the isotopic compositions of elements arising . small . differences in the chemical behavior of different isotopes of an . Kristina . Melnik. & Stephanie . Felten. University of Utah. Isotopic Labeling. References: . http://en.wikipedia.org/wiki/Isotopic_labeling. , . http://en.wikipedia.org/wiki/Crossover_experiment_%. J. . Kervalishvili. ISOTOPE . EFFECTS IN THE CONDENSED . MATTER: . SENSORY APPLICATIONS . 10 July 2014, . Tbilsi. Outline:. Determination . of appropriateness and mechanisms of the influence of the isotope effects on the properties of the medium fives new possibilities to pass from the technology of isotope substances pure in the sense of admixtures to the technology of pure isotope substances. Purposeful usage of isotope effects in certain physical phenomena and processes will substantially extend the sphere of utilization and production of stable and unstable isotopes.. 3. N in the massive star-forming region Sgr B2(M). Takahiro Oyama. , Rin Abe, Ayane Miyazaki, . Mitsunori Araki, Shuro Takano, Nobuhiko Kuze,. Yoshihiro Sumiyoshi, and Koichi Tsukiyama. ・. Isotopic ratios of HC. Kamana. Yadav. 1*. , Rajesh Agnihotri. 2. , Vedula .V.S. Sarma. 3. , Supriya G. Karapurkar. 1. , Praveen Kumar Poosarla. 3. , M. Dileep Kumar. 1. 1.CSIR- Chemical Oceanography Division, National Institute of Oceanography, Goa, India.. Lecture 33 . Stable Isotopes in the Hydrosphere and Biosphere. Isotopic Fractionation in the Hydrosphere. δ. 18. O in the oceans is nearly constant at 0. However, as a consequence of Rayleigh fractionation and temperature dependence of the water-vapor fractionation factor, the isotopic composition of precipitation varies widely.. FIGURE 01: Simple Bohr-type model of a lithium atom. Radioactive Isotopes. Unstable isotopes decay to other nuclides. The rate of decay is constant, and not affected by P, T, X…. Parent. nuclide = . Changes or transforms chemicals into . other. chemicals. Ex: Iron + Oxygen . . Iron Oxide (rust). Physical Science Review. What is the product?. What are the reactants?. Chemical formula. . shows the kind and proportion of atoms of each element that occurs in a particular compound. Melnik. & Stephanie . Felten. University of Utah. Isotopic Labeling. References: . http://en.wikipedia.org/wiki/Isotopic_labeling. , . http://en.wikipedia.org/wiki/Crossover_experiment_%. 28chemistry%29. Prosper Zigah. Woods Hole Oceanographic Institution. pzigah@whoi.edu. 1. What are Isotopes. Why care about stable isotopes?. Expressing Isotopic abundances. Isotope effects. Isotopic-mass balance calculations (two-component and multiple-component mixing models).