CHEM7113 - Atomic Spectroscopy ! !! Analytical Techniques "! Absorption (AAS) "! Flame AAS "! Vapour generation AAS furnace (electrothermal) AAS "! Graphite "! Emission (AES) "! ICP-AES "! AFS (atomic fluorescence) Some diagrams and Tables are reproduced from Skoog ‘Principles of Instrumental Analysis’‚ 5th/6th ed. 1 ! Atomic Spectroscopy ! !! Electronic transitions : UV - visible radiation excitation of outer-shell electrons of atoms in the gas phase energy
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ABSORBENT MIND ESSAY Dr Montessori discovered that the child possess a mind which is totally different from that of an adult. The child absorbs all that is found around him‚ very much identical to the process of osmosis. A key word before further development about the absorbent mind would be adaptation. Adaptation might be considered as the trigger point. Why ? From his birth‚ in order to survive and to fulfil his role‚ the infant is adapting himself to the environment. He was
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Topics • Presentation / discussion of syllabus • Tips for success • Laboratory • Introduction to the analytical process • Sample preparation Jan 9th‚ 2015 • Spectrophotometry • Properties of light • Absorption of light • Excited states • Luminescence • Applications of spectrophotometry • UV-Vis spectroscopy • Fluorimetry Jan 16th‚ 2015 • Fluorescent staining‚ green fluorescent protein • Immmunoassays • Discussion on lab test • Optional tutorial on Ch. 1‚ 2‚ 3‚ 4-1 and 4-2 (8:359:20am) Jan 23rd‚ 2015
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Absorption Spectra of Conjugated Dyes 04-21-2103 Introduction: The visible absorption bands or conjugated dye arise from electron transitions involving the electrons in the conjugated and they are free to move along the chain and are not attached to any atom. An example of such a dye is 3‚3-diethyl-thiacyanine iodide. The cation has two resonance forms causing each of the bonds in the conjugated chain to have an order of 1.5 and have a length similar to the C--‐C bond length in benzene
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Mustaqim Ahmed Period 4 September 18‚ 2013 Analysis of Food Dyes in Beverages Purpose: To determine the concentration of dye in a sports drink using spectroscopy and graphical analysis. We will be using beers law to find the unknown concentration of dye in a sports drink. Materials: Beakers‚ 50-mL‚ 2-3 ; Test tubes (13 x 100)mm 3-8 ; FD&C Blue 1 stock solution‚ 50-mL ; Lens tissues ; Pipets‚ serological‚ 10-mL ; Sample of consumer sports drink‚ 10-mL ; Spectrophotometer ; Test tube rack Procedure:
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Year 12 Chemistry 2011 Student Handbook Table of Contents Errors 2 Significant Figures 2 States of Matter in Equations 2 Revision Hints 3 Equations 4 VCAA 2008-2011 Key Skills 6 Unit 3 VCAA Study Design 7 Unit 3 Timetable 8 Unit 3 Work Set Questions 10 Unit 4 VCAA Study Design 11 Unit 4 Timetable 12 Unit 4 Work Set Questions 14 ERRORS When instruments are manufactured‚ there is a specified uncertainty within which the instrument is designed
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Inner Packaging - Well-sealed 360-degree packaging and a separate package for each napkin to prevent hand contact and secondary contamination. 2. COMFORTABLE Close-fitting soft surface is comfortable‚ hypoalllergenic 3. ABSORBENT Quick absorption‚ without reverse osmosis; highly effective absorbenance factor‚ converting liquid into pudding like gelatin‚ always keep dry and not sticky. 4. AIR PERMEABLE The bottom layer is made of highly resistant and air permeable materials that prevent
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observe their absorption of light. Then‚ a graph was created to plot down the measurements. Using the calibration curve of the graph‚ the concentration of the unknown substance was found out to be .12M. Background/Introduction: Beer’s law (which states that by holding the pathlength of a particular substance- in this case‚ CUSO₄ - constant‚ the absorption of light is directly proportional to the concentration of the substance) was used in this experiment to find the absorption measurement of
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Rotation Spectroscopy of HCl and DCl Purpose: To determine the fundamental vibration frequency and bond length for H35Cl‚ H37Cl‚ D35Cl‚ and D37Cl and to compare the isotope effects to theoretically predicted values. Introduction Vibration spectroscopy is one of the most important tools for the accurate determination of molecular structure. Vibration spectroscopy also plays an important role in environmental chemistry. For example‚ the albedo of the earth’s atmosphere is controlled by the absorption of
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Mass Spectroscopy Mass spectroscopy is a method used in science and industry in order to obtain the masses and relative concentrations of atoms and molecules and to detect isotopes in a sample based on their masses. In order to do this the method requires an instrument called the ‘mass spectrometer’‚ of which‚ is able extract accurate information of the relative masses of isotopes and their relative abundance. This makes the mass spectrometer very useful for applications such as carbon dating
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