CHEM 3440
CHEM 3440 - Instrumental Analysis - University Of Guelph Study Resources
  • 13 Pages midterm 2006
    Midterm 2006

    School: University Of Guelph

    Course: Instrumental Analysis

    Chemical Instrumentation CHEM*3440 Mid-Term Examination Fall 2006 Tuesday, October 24 Duration: 2 hours. You may use a calculator. No additional aids will be necessary as a series of data and equation sheets are included as part of the examination. 1. (10

  • 7 Pages midterm 2005
    Midterm 2005

    School: University Of Guelph

    Course: Instrumental Analysis

    Chemical Instrumentation CHEM*3440 Mid-Term Examination Fall 2005 TUESDAY, OCTOBER 25, 2005 Duration: 2 hours. You may use a calculator. No additional aids will be necessary as a series of data and equation sheets are included as part of the examination p

  • 7 Pages Midterm 2004
    Midterm 2004

    School: University Of Guelph

    Course: Instrumental Analysis

    CHEM*3440 Instrumental Analysis Mid-Term Examination Fall 2004 Duration: 2 hours 1. (10 points) An atomic absorption experiment found the following results for a [Pd] ppm series of standard solutions for dissolved palladium metal ion. The data were plotte

  • 8 Pages midterm 2003
    Midterm 2003

    School: University Of Guelph

    Course: Instrumental Analysis

    CHEM*3440 Instrumental Methods Mid-Term Examination October 28, 2003 Duration: Two Hours 1. (5 points) A real battery actually behaves more like a voltage source in series with a resistance, called its internal resistance. (This arises from the fact that

  • 8 Pages final2005
    Final2005

    School: University Of Guelph

    Course: Instrumental Analysis

    CHEM 3440 Final Examination Fall 2005 Duration: 2 hours 1. (10 points) Chondrotinase is a protein which was analyzed by ESI FT ICR MS by Kelleher et al. in 1997. Some spectra are shown below. Mass here is reported in daltons (Da) = atomic mass unit (amu).

  • 9 Pages final2004
    Final2004

    School: University Of Guelph

    Course: Instrumental Analysis

    1 CHEM*3440 FINAL EXAMINATION Fall 2004 Duration: 2 hours 1. (8 points) A certain molecule was analyzed by electrospray ionization mass spectrometry. There are a lot of overlapping bands, but a tetramer of the molecule appears with a residual charge of +7

  • 10 Pages CHEM3440Lec15F06
    CHEM3440Lec15F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Nuclear Stability Atomic nuclei consist of protons and neutrons held together by the strong nuclear force, in balance with the electromagnetic and weak forces. Most nuclei are unstable and decay by various emission pathways. CHEM*3440 Chemical Instrumenta

  • 7 Pages CHEM3440Lec14F06
    CHEM3440Lec14F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Thermal Methods We will examine three thermal analytical techniques: Thermogravimetric Analysis (TGA) CHEM*3440 Chemical Instrumentation Topic 14 Differential Thermal Analysis (DTA) Differential Scanning Calorimetry (DSC) TGA and DTA have found important

  • 10 Pages CHEM3440Lec13F06
    CHEM3440Lec13F06

    School: University Of Guelph

    Course: Instrumental Analysis

    X-Ray Energies very short wavelength radiation 0.1 to 10 nm (100 ) Visible - Ultraviolet (UV) - Vacuum UV (VUV) - Extreme UV (XUV) - Soft X-ray - Hard X-ray - Gamma Ray often report photon energies, rather than wavelength. (above range is from 125 keV dow

  • 12 Pages CHEM3440Lec12F06
    CHEM3440Lec12F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Fundamental Scheme In general there are four steps associated with a mass spectroscopic experiment: ! generate gas-phase molecules from analyte (solid, liquid, solution, etc.) CHEM*3440 Chemical Instrumentation Topic 12 " ionize those molecules # separate

  • 6 Pages CHEM3440Lec11F06
    CHEM3440Lec11F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Raman Spectroscopy Another spectroscopic technique which probes the rovibrational structure of molecules. CHEM*3440 Chemical Instrumentation Topic 11 C.V. Raman discovered in 1928; received Nobel Prize in 1931. Can probe gases, liquids, and solids. Must u

  • 16 Pages CHEM3440Lec10F06
    CHEM3440Lec10F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Infrared is Rovibrational Spectroscopy Wavelengths between 0.8 m to 1 mm. Associated with changes in nuclear motion (vibrations and rotations). CHEM*3440 Chemical Instrumentation Topic 10 In gas phase, rotational transitions are resolved; in liquid phase,

  • 8 Pages CHEM3440Lec9F06
    CHEM3440Lec9F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Types of Luminescence Fluorescence Happens quickly after the absorption of the initial photon (s to ps lifetime). CHEM*3440 Chemical Instrumentation Topic 9 Phosphorescence Happens slowly after the absorption of the initial photon (min to ms lifetime). Ch

  • 11 Pages CHEM3440Lec8F06
    CHEM3440Lec8F06

    School: University Of Guelph

    Course: Instrumental Analysis

    UV-Visible Electronic Transitions This technique is mainly a study of molecules and their electronic transitions. Molar absorptivity (") ranges from 0 to 105. CHEM*3440 Chemical Instrumentation Topic 8 Transitions with " < 103 are considered to be of low

  • 8 Pages CHEM3440Lec7F06
    CHEM3440Lec7F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Spectrum of Electromagnetic Radiation Electromagnetic radiation is light. Different energy light interacts with different motions in molecules. CHEM*3440 Chemical Instrumentation Topic 7 Radiofrequency Microwave Infrare d UV-Visible Far UV - X-ray Gamma R

  • 7 Pages CHEM3440Lec6F06
    CHEM3440Lec6F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Digital Data Domain An analog signal is continuously varying in time. A digital signal consists of discrete samples of an analog signal. It is discretized in both coordinates (time and signal amplitude). CHEM*3440 Signal Level Sample Spectrum 10 9 8 7 6 5

  • 6 Pages CHEM3440Lec5F06
    CHEM3440Lec5F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Circuit Diagram of 741 Op Amp CHEM*3440 Chemical Instrumentation Topic 5 Operational Amplifiers Thanks to Tony van Roon in the Electronics Shop for the use of this picture. Schematic of Op Amp While op amp is complex in detail, there are really only three

  • 12 Pages CHEM3440Lec4F06
    CHEM3440Lec4F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Signal In All experiments there is: Sample Response: the instrument's response when the analyte is present. CHEM*3440 Output Response Blank Response: the instrument!s response when the analyte is absent. The Signal is the difference between the sample and

  • 9 Pages CHEM3440Lec3F06
    CHEM3440Lec3F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Current Convention CONVENTION: Electrical current ows from a region of positive potential energy to a region of more negative (or less positive) potential energy. CHEM*3440 Chemical Instrumentation Topic 3 Truth is that electron ow is electrical current.

  • 9 Pages CHEM3440Lec2F06
    CHEM3440Lec2F06

    School: University Of Guelph

    Course: Instrumental Analysis

    Statistics and Analytical Chemistry Random noise is part of any analytical measurement. Precise and Accurate answers demand a statistical analysis of the data. 1. How much analyte is present? 2. Is one test protocol better than another? 3. Are the results

  • 7 Pages CHEM3440Lec1F06
    CHEM3440Lec1F06

    School: University Of Guelph

    Course: Instrumental Analysis

    The Analysis Concept What is it? How much is there? How does it behave? CHEM*3440 Chemical Instrumentation Topic 1 Probe Sample for Analysis Response Concept of the Instrument Electrons, photons, atoms, molecules, ions, heat, . Heat, ions, molecules, atom

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