PPT-Introduction to X-Ray Fluorescence

NON DESTRUCTIVE CHEMICAL ANALYSIS Notes by Dr Ivan Gržetić professor University of Belgrade Faculty of Chemistry What are XRays Photons with a wavelength between 10 9 and . These devices 2 3 confute the widespread belief that the necessary instrumentation is complex and difficult to operate Complicated and very expensive TCSPC electronics built from NIMmodules can now be integrated on a single PCboard 4 and controlled AIT. Exercise . 2.1. Atomic. Molecular. Absorption. Emission. flame AAS. UV/VIS. IR. flame emission. ICP. ??. Fluorescence. Interaction with radiation. absorption to exc. state via heat, electricity, radiation. Chelsea Aitken. Peter Aspinall. Advantages Over Light Microscopy. Resolution of light microscopy limited by Rayleigh Criterion. If two objects cannot be seen as distinct structures, then they may be considered coincident in space. . What is a . fluorescence. ?. Wiki. : emission of light by a substance that has absorbed light or other electromagnetic radiation of a different wavelength.. The name coined by George Gabriel Stokes in 1852 “. 1. Dr. Nikhat Siddiqi. Principles. Interaction of photons with molecules results in promotion of valence electrons from ground state . orbitals. to high energy levels.. The molecules are said to be in excited state.. . M. . Uherek. 1. , J. . Fischerova. 2. . and. . D. . Chorvat. . jr. .. 1,2. 1. International Laser Centre, Bratislava, Slovakia . 2. Faculty of Mathematics, Physics and Informatics, Comenius University,. Lyes. . Lakhal. Institut Polytechnique . LaSalle. Beauvais. Rue Pierre WAGUET. BP 30313. F-60026 BEAUVAIS . Cedex, France.. . Workshop on Tensor Decompositions and . Applications. , . 2010. Sept. 13-17, 2010, Monopoli, Bari, Italy. . a . semi-analytical ocean color model for MODIS and beyond. Stéphane. . Maritorena. & Dave Siegel. Earth Research Institute. University of California, Santa Barbara. - . Develop. a . fluorescence . KAARTHIK J. INTRODUCTION. A fluorescence microscope is a optical microscope that uses fluorescence and phosphorescence instead of , or I addition to reflection and absorption to study properties of organic or inorganic substances.. Dr.. A. K. Dhingra. Indocyanine. . G. reen Dye - ICG. w. as . developed for near- infrared (NIR) photography by . Kodak Research . Labs. . in 1955 and was introduced in clinical practice . in . 1956 . It is a phenomenon of emission of radiation when the molecules are exited by radiation at certain wavelength.. FLUORIMETRY:-. It is measurement of fluorescence intensity at a particular wavelength wit the help of a filter fluorimeter or a spectrofluorimeter.. of a . fluorophore. FLT does not depend on . fluorophore. concentration, absorption by the sample, sample thickness, method of measurement, fluorescence intensity, photo-bleaching, and/or excitation intensity. It is affected by external factors, such as temperature, polarity, and the presence of fluorescence quenchers. Fluorescence lifetime is sensitive to internal factors that are dependent on . Djoshkun Shengjuler (JOJO). Cameron Lab. Feb. 25. th. , 2015. PSU-BMB. Outline. History. Measurement. Principle. Advantages/Disadvantages. Applications. Case studies (3). Special Considerations. History. and its diffusion in biological liquid flow. Maryakhina. V.S., . Gun’kov. v.v.. Orenburg state university. v.s.maryakhina@gmail.com. Exemplary fluorescence images of one animal after injection 2 .