X-ray fluorescence

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  • The Influence Of Arsenic On Human Health

    An x- ray spectrometer is a type of instrument that is used to get analysis on rocks, minerals, and fluids in a non- destructive way (XRF, 2002). The way this device works is on a wavelength similar to an electron microbe (XRF, 2002). The only way this is possible is through the behavior and reaction of atoms when they come in contact with the radiation (XRF, 2002). The materials will then become excited from the short length radiation which will dislodge an electron (XRF, 2002). Energy will then be released, due to the shift of electrons from the inner and outer shell (XRF, 2002). High energy x- ray is used to bombard the sample (XRF, 2002). Enough energy is supplied to cause ionization at the k- shell of the atom (XRF, 2002). The electronic structure of the atom is now unstable (XRF, 2002). An electron from a higher orbital falls into the lower orbital to replace the ejected electron (XRF, 2002). Energy is released as this electron falls into the newly created spot (XRF, 2002). This energy is equal to the energy difference of the two orbitals involved (XRF, 2002). The sample therefore emits radiant energy that is characteristic of the atoms present (XRF, 2002). Finally, the resulting fluorescent x- ray can be used to get an analysis in ppb on a substance if it is present in the sample (XRF, 2002). The x- ray fluorescence spectrometer in the lab, however, measures in ppm instead of the common ppb. The…

    Words: 2538 - Pages: 11
  • Structural Biology Reflection

    growth rate was then quantified by measuring their confluency using a hemocytometer. Towards the end of the project, I learned that sirtuin inhibitors may help cells grow to a greater confluency compared to cells grown in media without sirtuin inhibitors, but no decisive conclusions can be made without further studies. My second and third research projects in Dr. An’s lab were analyses of phosphorylation sites in purine biosynthetic enzymes glycinamide ribonucleotide formyltransferase (GART)…

    Words: 1169 - Pages: 5
  • Unit 3 Exercise 1 Stand-Ups Case Study

    EXERCISE 1 As Wenger and Potter (2015) assert, “stand-ups can serve several functions, so it’s important to know in advance what you’re trying to accomplish with an on-camera segment” (p. 284). Personally, I would need to prepare myself thoroughly and conduct some research of my own to learn more about the topic at hand. My goal as a reporter is to establish credibility on the subject and be able to project confidence to the audience (Wenger and Potter, 2015). According to Wenger and Potter…

    Words: 1376 - Pages: 6
  • The Importance Of Space Technology

    energy that the sun’s core presents, and the atoms in each consecutive level of our star as the light attempts to outflow. “together these efforts channeled the combined expertise of dozens of astronomers, computational physicists, and atomic physicists into diving with unprecedented precision how atoms in the layers of the sun and other stars interact with the light trying to escape” (James). In 2003, Yu had taken his career to join forces with prestige medical physicists; however, he sustained…

    Words: 730 - Pages: 3
  • The Pros And Cons Of MRI Scans

    Nearly all ancient societies practiced body modification through either piercingss or tattoos. These ancient practices are becoming ever more present in our modern Canadian society, especially tattoos. One writer says, “Permanent tattooing is the process of body modification by deposition of a pigment into the dermis” (Simunovic and Shinohara 525). In the past three decades, magnetic resonance imaging (MRI) has become increasingly popular in the medical field. Magnetic resonance imaging is a…

    Words: 1696 - Pages: 7
  • The Characteristics Of Gilgamesh: A Hero As A Hero

    A hero can be classified by many things. A hero can be superman, a police officer, and even your mom, but what makes a hero. Is it someone who can fly or shoot laser beams from their eyes or someone who saves a baby from a burning building. I’ll admit some of these characteristics are far-fetched since I don’t know anyone who can fly or randomly saves babies on a normal day. All heroes, including super ones all, have something in common, they're admired for their courage or an outstanding thing…

    Words: 1343 - Pages: 6
  • X Rays Research Paper

    X-rays is one type of electromagnetic radiation that can send waves through the body which makes us see through the body tissue but it doesn’t go through the bone. Therefore it is used in hospitals to see if a person has a broken bone or any diseases. Because it can go through clothes and the human skin it is also used in airports to see if anybody has a knife or anything dangerous with them. X-rays were first discovered by German scientist Wilhelm Conrad Roentgen in 1985. Roentgen found x-rays…

    Words: 998 - Pages: 4
  • Electron Microscopy Essay

    allowing for organelles, such as mitochondria, to be seen in detail for the first time. Unlike light microscopy, TEM uses a beam of electrons, denoted as a cathode ray, to scan samples. While the traditional optical microscope is restricted in resolution by the wavelength of…

    Words: 892 - Pages: 4
  • Pearls Case Study Analysis Essay

    Case study of X-ray imaging with grating interferometer on pearls Abstract- With the increase of fraudulent conduct in the field of jewellery there has been increase in the demand for inspection to identify the purity of the product. In this case study X-Ray Radiography is used to identify natural pearls and artificially cultured pearls. In order to understand the internal structure a personalized grating interferometer and inspection has been performed to obtain measurements. The computed…

    Words: 864 - Pages: 4
  • Radiology Career Research Paper

    doctor (MD) or doctors of osteopathic medicine (DOs) who specialize in using medical imaging techniques that help diagnose and treat diseases and injuries. The medical imaging that they use would be x-rays, CTs,…

    Words: 878 - Pages: 4
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