Essay on Spectroscopy - 921 Words

Spectroscopy Spectroscopy is the study of energy levels in atoms or molecules, using absorbed or emitted electromagnetic radiation. There are many categories of spectroscopy eg. Atomic and infrared spectroscopy, which have numerous uses and are essential in the world of science. When investigating spectroscopy four parameters have to be considered; spectral range, spectral bandwidth, spectral sampling and signal-to-noise ratio, as they describe the capability of a spectrometer. In the world of spectroscopy there are many employment and educational opportunities as the interest in spectroscopy and related products is increasing. However Spectroscopy is not a recent development, as it has been†¦show more content†¦History of Spectroscopy ======================= Spectroscopy has been used as a method of quantitative chemical analysis before the beginning of the twentieth century. Spectroscopy started in 1666 when Sir Isaac Newton passed rays of light from the sun through a glass prism and observed the colours of the visible spectrum, another great breakthrough concerning spectroscopy was the suggestion of transition between energy levels within atoms as the source of spectral lines was great contribution made by Niels Bohr in 1913. At the end of the nineteenth century, spectroscopy was limited to the absorption, emission, and the scattering of visible, ultraviolet, and infrared electromagnetic radiation. However, during the twentieth century, spectroscopy was extended to include other forms of electromagnetic radiation including photo spectroscopy e.g X-rays, microwaves, and radio waves, as well as particle spectroscopy. Functions and Description of a spectrometer [IMAGE] Fig 1. Schematic diagram of a spectrometer employing photomultiplier as detector. A spectrometer usually shows pointed distinct features, instead of curving wavelengths; the sharp structure used is particularly obvious when the substance investigated includes atoms in the gas stage. TheShow MoreRelatedSpectroscopy, Infrared Spectroscopy And Spectroscopy1773 Words   |  8 PagesSpectroscopy is a broad field of science that includes Raman Spectroscopy, Infrared Spectroscopy, Nuclear Magnetic Resonance Spectroscopy, Optical Spectroscopy and several other techniques. Although the techniques are distinct, spectroscopy essentially is how energy and matter interact with one another. Matter exhibits electromagnetic radiation that consists of wavelike properties. Ultimately, this electromagnetic radiation can assist in speculating the structure of a molecule. Infrared SpectroscopyRead MoreSpectroscopy Lab Report1548 Words   |  7 Pagesgive insight to the makeup and characteristics of them. The light given off by an energetically excited atom is not a continuous dis tribution of all possible wavelengths, but rather consists of a few wavelengths giving a series of discrete lines. Spectroscopy is the analysis of that emitted light and its dispersion into to it’s component wavelengths and colors. Niels Bohr explained the discrete spectrum of hydrogen†¨by relating it to the electron. Normally the electron in the hydrogen atom is locatedRead MoreEssay On Identification Of Spectroscopy835 Words   |  4 Pagescompounds are yet to be discovered, but there are many tools and methods available to uncover the identity of newly synthesized compounds. These techniques include performing NMR spectroscopy, IR spectroscopy, and mass spectrometry, as well as analyzing melting points and refractive indexes. In particular, spectroscopy and spectrometry are especially useful in determining chemical and physical properties, and they are highly applicable to pharmaceutical product development. According to a study publishedRead MoreANALYSIS OF COPPER IN BRASS BY UV - VISIBLE SPECTROSCOPY1783 Words   |  8 Pages DATE: 21-01-14 ANALYSIS OF COPPER IN BRASS BY UV – VISIBLE SPECTROSCOPY AIMS/OBJECTIVES; To determine the percentage of copper in brass by UV-visible spectroscopy. INTRODUCTION Electromagnetic radiation, of which ultraviolet and visible light are but two examples, has properties of both waves and particlesRead MoreNuclear Magnetic Resonance Spectroscopy1841 Words   |  7 Pages1) THEORY OF NMR Nuclear magnetic resonance spectroscopy is an analytical tools that use in quality control to analyze the microscopic physical and chemical structures of molecules. Many nuclei may be studied by NMR technique, but hydrogen and carbon are most available. NMR gives information about the number of magnetically distinct atoms of the type of nuclei being studied. When an electromagnetic radiation applied with specific frequency, and atomic nuclei are immersed in an external magneticRead MoreAbsorption Spectroscopy: Beer-Lambert Law Essay1031 Words   |  5 PagesAbsorption Spectroscopy Author: Cesar M. Lemas Lab Partners: Jahnnan Jayesh Patel, Myong Ho Lee Salem Alsaif Instructor: Jordan Andrew Mudery Chem 151, Section 7D Date Work Performed: October 18th 2012 Date Report submitted: October 25th 2012 Abstract Absorption spectroscopy is a practical way to find what the light absorption of a substance is, and whit this data combining the Beer’s law equation you can determine the concentration of different things in a solution, inRead MoreFluorescence Spectroscopy And The Emission Wavelength Of Eosin Serum Albumin ( Bsa )1141 Words   |  5 Pagesemission wavelength of 358 nm which could also be indicative of a tryptophan. When BSA and ANS were mixed together, the emission wavelength was longer suggesting that the molecules interact with each other and follow FRET.â€Æ' Introduction Fluorescence spectroscopy is a useful technique to determine the proteins and nucleic acids of a macromolecule. Some molecules, fluorophores, can absorb light at certain wavelengths and then emit it at another wavelength. When the molecule absorbs light it is excitationRead MoreExperimental Study On Different Flavourings Cat Medicine By Raman Spectroscopy2324 Words   |  10 Pages Proposal for experimental study on different flavourings cat medicine by Raman spectroscopy from Mengxin Huang 2411550 CHEM 464 Supervisor: Keith C. Gordon University of Otago, Department of Chemistry 2015 â€Æ' Content Abstract Introduction Raman spectroscopy Principle of Raman spectroscopy Basic Raman scattering process Raman imaging Literature survey: limitations and considerations Effect of refraction Relative Raman scattering intensity Processing of data: multivariate analysisRead MoreInfrared Spectroscopy772 Words   |  4 PagesInfrared Spectroscopy Organic Chemistry Lab 301A B. The purpose of this lab is to study Infrared Spectroscopy, which focuses on the study of the electromagnetic spectrum. The area to be studied is the infrared region, which is made up of gamma, X, and UV rays. We want to be able to identify spectra’s to their complementary structures. The background of this experiment particularly deals with the study of compound structure determination, and traits. We must be aware of the functional groupsRead MoreDetermination of Iron in Cereal Using Aas1627 Words   |  7 PagesEXPERIMENT : Iron in Breakfast Cereal by Atomic Absorption Spectroscopy OBJECTIVES : 1) To determine the actual iron content of different brands of cereals 2) To compare the experimental results with the values listed on the manufacturer’s labels. INTRODUCTION : Iron is one of the important minerals that is required for our bodies to function properly. Most of the iron in our body is found in the blood such as haemoglobin, approximately 60 -70% of the human body’s iron is found