intro-analytical chem
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intro-analytical chem intro-analytical chem Presentation Transcript

  • STKK2723 – KAEDAHPEMISAHAN (SeparationTechniques)Pusat Pengajian Sains Kimia & Teknologi Makanan, 1Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • Review onANALYTICAL CHEMISTRYPusat Pengajian Sains Kimia & Teknologi Makanan, 2Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • DEFINITIONAnalytical chemistry is a sub disciplineof chemistry use to understand thechemical composition of all matterand developing methods (analyticalmethods) to elucidate suchcompositions. Pusat Pengajian Sains Kimia & Teknologi Makanan, 3 Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • Unlike other major sub disciplines ofchemistry such as inorganic chemistryand organic chemistry, analyticalchemistry is not restricted to anyparticular type of chemical compoundor reaction. Pusat Pengajian Sains Kimia & Teknologi Makanan, 4 Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • Properties studied in analyticalchemistry include geometric featuressuch as molecular morphologies anddistributions of species, as well asfeatures such as composition andspecies identity. Pusat Pengajian Sains Kimia & Teknologi Makanan, 5 Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • ANALYTICAL CHEMISTAnalytical chemists have played critical rolesin the sciences ranging from the developmentof concepts and theories (pure science) to avariety of practical applications, such asbiomedical applications, environmentalmonitoring, quality control of industrialmanufacturing and forensic science (appliedscience). Pusat Pengajian Sains Kimia & Teknologi Makanan, 6 Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • Analytical chemistry is particularlyconcerned with the questions of : •What is it? What chemicals are present? (qualitative) •Where is it from? How much is it? in what quantities are they present? (quantitative) •What is the arrangement, structure or form? What are their characteristics? (speciation) Pusat Pengajian Sains Kimia & Teknologi Makanan, 7 Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • SCOPE OF ANALYTICAL CHEMISTRYIn general, analytical chemistry involves SEPARATION, IDENTIFICATION, and DETERMINATIONof the components making up a sampleof matter. Pusat Pengajian Sains Kimia & Teknologi Makanan, 8 Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • Analytical Problems and theirSolution The solutions of all analytical problems, both qualitative and quantitative follow the same basic pattern which can be described under seven general headings. Pusat Pengajian Sains Kimia & Teknologi Makanan, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • Analytical Problems and their Solution • Choice of method • Sampling • Preliminary sample treatment • Separations • Final measurement • Method validation • Assessment of the results Pusat Pengajian Sains Kimia & Teknologi Makanan, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • Separation processes are used todecrease the complexity of materialmixtures thus make it easier foridentification & determination.The separated products could differ inchemical properties or some physicalproperty. The matrix may be differentfrom the original sample. However withthe correct standardization andcalibration this can be tolerated. Pusat Pengajian Sains Kimia & Teknologi Makanan, 11 Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.
  • COURSE CONTENT (STKK 2723)•Introduction to analytical chemistry•Chromatographic techniques i. Liquid chromatography MPA ii. Gas chromatography iii. Supercritical fluid chromatography•Liquid extraction (LLE) SS•Solid phase extraction (SPE)•Solid phase micro-extraction (SPME)•Electrophoresis•Precipitation RO•Distillation•Other extraction techniques Pusat Pengajian Sains Kimia & Teknologi Makanan, 12 Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.