PPT-Gas Chromatography

Haiqing Guo Dept of Fire Protection Engineering hguoumdedu Lab Methods Day June 25 2014 What is GC Gas chromatography GC is a common type of chromatography used in analytical chemistry for . PREPARED BY-. MD.MARUF HASSAN. Chromatography. The process or technique of separating molecules or components in a mixture . solution (gas or . liquid) . according . to the differential absorption and elution . Invention of Chromatography. Mikhail Tswett. Russian Botanist. (1872-1919). . Mikhail Tswett. invented chromatography in 1901 during his . research on plant pigments. . . He used the technique to separate various plant pigments such as . Chapter 4. Best Broken into four categories. Theoretical Background. Gas Chromatography. HPLC. Quantitation, Calibration, Standardisation and Validation. Theory. Review of Partitioning. You need to be aware of the following concepts in order to have any idea about this chapter!. AP Investigation 5: Photosynthesis – Part I. Chromatography. T. echnique . used to separate a mixture into its component . molecules. The . molecules migrate, or move up the paper, at different rates because of differences in solubility, molecular mass, and hydrogen bonding with the paper. The next two (2) experiments introduce Gas Chromatography and Simple & Fractional Distillation. This Week. Gas Chromatography – Acetates. Pavia – p. 817 - 836. Slayden – . p. 39 - 31. . Instrumentation. Invented by a Russian Botanist Mikhail . Tswett. in 1903 . He used chromatography . . to separate the colour . . pigments in plants from . . one another. Chromatography is a separation technique in which a mobile phase carrying a mixture moves in contact with a selectively adsorbent stationary phase. Introduction. Gas chromatography is used in many research labs, industrial labs (quality control), forensic (arson and drug analysis, toxicology, etc.), environmental labs (water, soil, air), and even in the popular TV culture (crime shows like NCIS (. Evidence. 1. Class characteristic—ink analysis, paper analysis, most handwriting analysis. 2. Individual characteristic--With document analysis, it is difficult to identify to an individual characteristic except with typewriter or printer specific marks.. Instrumental Analysis Instrumentation Paper Chromatography GC – Gas Chromatography HPLC- High Performance Liquid Chromatography IR – Infrared Spectroscopy UV-Vis Spectroscopy MS – Mass Spectrometry Lecture 7 a Chromatography I Introduction Chromatography was discovered by Russian botanist Mikhail Semyonovich Tsvett , who separated plant pigments using calcium carbonate columns (1901) Martin and Synge ( A sample containing the materials to be separated is injected into the gas chromatograph. . Gas Chromatography. A mobile phase (carrier gas) moves through a column that contains a wall coated or granular solid coated stationary phase. . A. . technique for the separation of a mixture by passing it in solution or suspension through a medium in which the components move at . different . rates. .. Principle. It is based on the principle of the partition of the solute between two phases/solvents. Definition. Ion-exchange chromatography. (or . ion chromatography. ) is a process that allows the separation of ions and polar molecules based on the charge properties of the molecules. . 1975 by Small, Stevens and Baumann. Introduction, theory, instrumentation, . derivatization. ,. Temperature programming, advantages, disadvantages and applications. 1. Dr. Nisha Sharma, Associate Professor, Pharmacy, C.S.J.M. University.