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Similar to Spectroscopy, Emission Spectroscopy.
Spectroscopy, Emission Spectroscopy.
- 1. Duration: 60 minGrade: 11 CCSS, NGSS Spectroscopy Course: Advanced Magnetic Chracterization Techniques
- 2. • Introduction • Explanation •Applications Spectroscopy Atomic Emission Specrtroscopy Contents : Types; spark ,Flames ,ICPS, G.C, Chromatography. opy
- 3. Spectroscopy • Spectroscopy wasdefined as the study of the interaction between radiation and matter as a function of wavelength. • Now, spectroscopy is defined as any measurement of a quantity as a function of wavelength or frequency.
- 4. Spectroscopy-Explanation • Spectroscopy isthe study of the absorption and emission of light and other radiation by matter. It involves the splitting of light (or more precisely electromagnetic radiation) into its constituent wavelengths (a spectrum), which is done in much the same way as a prism splits light into a rainbow of colours.
- 5. Principles of Spectroscopy Interactionof radiation and matter. If matter is exposed to electromagnetic radiation, e.g. infrared light, the radiation can be absorbed, transmitted,reflected, scattered or undergo photoluminescence.
- 6. What is SpectroscopyUsed For? Spectroscopy is used • to detect • to determine • to quantify The molecular and/or structural composition of a sample.
- 7. Spectroscopy Applications • Determiningthe atomic structure of a sample • Determining the metabolic structure of a muscle • Monitoring dissolved oxygen content in freshwater and marine ecosystems • Studying spectral emission lines of distant galaxies • Altering the structure of drugs to improve effectiveness • Characterization of proteins • Space exploration • Respiratory gas analysis in hospitals
- 8. Spectrometer Components • LightSources • Non-dispersive Elements • Dispersive elements - Prisms/Diffraction Gratings • Fiber Optic Cables and Spectrometry • Spectral Resolution
- 9. Types of spectroscopy Someof the different types of spectroscopy include • X-ray spectroscopy • Flame spectroscopy • Atomic emission spectroscopy (AE) • Atomic absorption spectroscopy (AA) • Spark emission spectroscopy • Visible and ultraviolet (UV) spectroscopy • Infared (IR) and near infared (NIR) spectroscopy • Nuclear magnetic resonance (NMR). • Raman spectroscopy
- 10. Have you everobserve atomic emission?
- 13. Atomic Emission Spectroscopy •In Emission spectrocopy , Atoms and molecules that are excited to high energy level can decay to lower energy level by emiitting radiations. • The substance first absorb energy and then emits energy in the form of light. • Emission can be induced by source of energy such as flame or electromagnetic radiation.
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- 21. Atomic Emission Spectroscopy-Conclusion: •Atomic emission spectroscopy (AES or OES) uses quantitative measurement of the optical emission from excited atoms to determine analyte concentration. • The high-temperature atomization sources provide sufficient energy to promote the atoms into high energy levels.
- 22. Spark Emission Spectroscopy-Introduction: When we use arc or spark as a source to provide energy to the atoms in Atomic emission spectroscopy is called Spark Emission Spectrocopy.
- 23. Spark Emission Spectroscopy-Process: Applying electrical energy in the form of spark generated between an electrode and a metal sample, whereby the vaporized atoms are brought to a high energy state within a so-called "discharge plasma".
- 24. Spark Emission Spectroscopy-Process: These excited atoms and ions in the discharge plasma create a unique emission spectrum specific to each element, as shown at right. Thus, a single element generates numerous characteristic emission spectral lines.
- 25. Spark Emission Spectroscopy-Process: Therefore, the light generated by the discharge can be said to be a collection of the spectral lines generated by the elements in the sample. This light is split by a diffraction grating to extract the emission spectrum for the target elements. The intensity of each emission spectrum depends on the concentration of the element in the sample. Detectors (photomultiplier tubes) measure the presence or absence or presence of the spectrum extracted for each element and the intensity of the spectrum to perform qualitative and quantitative analysis of the elements.
- 26. Spark Emission Spectroscopy-Process: An electric arc or spark is passed through the sample, heating it to a high temperature to excite the atoms within it. The excited analyte atoms emit light at characteristic wavelengths that can be dispersed with a monochromator and detected.
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- 28. Spark Emission Spectroscopy-steps •Make a liquid solution of a sample (mix with solvent) disolvation- sepearte solvent and atoms from sample vaporization- sample into gasous form atomization change in to atoms excitation- emit radiations • Emited raditations pass through lens (use mirror for relection of emitted radiations) • monochromator (split radiations into different colors) • slit • PMT (multiple the photons) • Detector
- 29. Advantages of SparkEmission Spectroscopy: • Repoducible • Less material is consumed • Heating effect is less which is usefull for Nlyaia of low melting point materials
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- 32. Any questions? You canfind me at: ● hamzaahmed0696@gmail.com • https://www.researchgate.net/profile/ Hamza-Suharwardi-2 Hamza Suharwardi Researcher Slow and steady win the race.