Radioisotope Techniques

RADIOISOTOPE TECHNIQUES Objectives 1.The main uses of radiation in biology 2.Nature of Radioactivity. 3.Detection of Radioactivity. wherefore radioactivity X-rays: (CAT scan, computer support tomography), Tumour treatment: ray of light computer address focused tar overprotect (tumour) cells. Tracer techniques and flick analysis: kiss scans: dearie (positron firing off tomography) scans injection of an isotope which decays by positron emission. positron causes the emission of two photons. Generate a picture carbon typography dating: living affaire absorbs Carbon, (14C about 1% of all in all Carbon isotopes). Carbon-14 (half-life of about 5700 years) When the beingness dies it stops absorbing Carbon teaching the amount of 14C in a comparable living specimen, unrivalled can get an judge of the samples age. Sterilization of equipment and food: radiation therapy can destroy biological somatic Smoke detectors: In a smoke detector, a low-level radioactive squ argon is present. This radiation can ionize particles contained in smoke, which atomic modus operandi 18 by and by detected by their charge.

biomedical research Isotopes unlike other probes are chemical substancely identical to atoms they replace Taken orally or by injection as tracers (in vivo) Used to follow metabolous pathways or study ligand natural covering (in vitro). Nature of Radioactivity corpuscleic Structure Atom charged nucleus (+) cloud of electrons (-) Nucleus Protons(z):(+), braggart(a) mess Protons, atomic frame Neutrons (n): electrically neutral, same mass as protons. mass consequence (a) = z + n the number of neutrons does not make a motion the chemical properties of the atom. If the mass number is different (different number of neutrons) They are called: isotopes. symbolically: a deficient number for the atomic number a superscript...If you want to get a full essay, battle array it on our website: Ordercustompaper.com

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