PPT-Atomic-absorption spectroscopy

Lab no 6 In analytical chemistry Atomic absorption spectroscopy AAS is a technique for determining the concentration of a particular metal element eg Fe Cu Al Pb Ca Zn. Keywords. : infrared, radiation, absorption. , spectroscopy. • State that absorption of infrared radiation causes covalent bonds to vibrate.. • Identify absorption peaks in an infrared spectrum.. 1.2-m UK Schmidt Telescope. Author: . Primož Cigler. Mentor: . prof. dr. Tomaž Zwitter. Seminar Leader: . prof. dr. Peter Križan. What I will be talking today about?. Basics about spectroscopy and some theoretical background. In . analytical chemistry. , . Atomic absorption spectroscopy. (AAS). . is a technique for determining the concentration of a particular metal . element. in a sample. (e.g.. Fe, Cu, Al, . Pb. , Ca, Zn).. Frequency combs – evolutionary tree. Overview. Basic Features: Frequency . C. ombs. Applications:. Frequency Metrology. Measuring Frequency Gaps. Frequency Combs as Optical Synthesizers. Time Domain Applicatons . From Astronomy To Biomedicine. Light and Matter .  Spectroscopy. . Generalized interactions  Radiation. . Atomic physics. . Astrophysics. . Plasma physics. . Molecular physics. . Biophysics. AP Chemistry. Mrs. Weston. What is spectrophotometry?. A type of spectroscopy that studies the transmission or reflection of different frequencies of the electromagnetic spectrum (specifically visible, near-IR and near-UV ranges) . Introduction . to Spectroscopy. Spectroscopy involves an interaction between matter and light . (EMR). Light can be thought of as waves of energy or packets (particles) of energy called photons. Properties of light waves include wavelength and frequency. 2. UV Spectroscopy. Introduction. UV radiation and Electronic Excitations. The difference in energy between molecular bonding, non-bonding and anti-bonding orbitals ranges from 125-650 kJ/mole. This energy corresponds to EM radiation in the ultraviolet (UV) region, 100-350 nm, and visible (VIS) regions 350-700 nm of the spectrum. FDR receives a letter from Albert Einstein. Informed FDR of recent developments in splitting uranium atoms. Could lead to “extremely powerful bombs of a new type” by means of nuclear fission. Nucleus absorbs a neutron, breaks into two equal fragments. SPECTROSCOPY (Chapter 8). Atomic spectroscopy techniques. :. Optical spectrometry. Mass spectrometry. X-Ray spectrometry. Optical spectrometry. : . Elements in the sample are atomized before analysis.. 1 IR-Spectroscopy IR region The part of electromagnetic radiation between the visible and microwave regions 0.8  m to 50  m ( 12,500 cm -1 - 200 cm -1 ) is called IR region Most interested region in Infrared Spectroscopy is between 2.5 Chapter 5. Sub Topics. Introduction to Atomic Spectroscopy. Atomic . Absorption Spectroscopy AAS. Atomic . Emission . Spectroscopy. AES. Interferences and Comparisons. Atomic Absorption and Emission Spectroscopy. Carsten Laukamp, CSIRO Mineral Resources. crushing,. grinding,. sieving,. filtering,. …. fresh surface. “peel”. (weathered surface). Geochemistry. Mineral Spectroscopy. 2. |. Mineral Spectroscopy Theory. MSSL, March 17-18, 2009. Frits Paerels. Columbia Astrophysics Laboratory. Columbia University, New York. cgs. units throughout!. Hα. Hβ. Hγ. Hδ. Wavelength (Å). NB: 1 Å = 10. -8. cm. E = . hc/λ.