Forensic Science

Forensic ScienceAmanda BickfordProject OutlineDetection of FingerprintsSuperglue fumingIodine fumingNinhydrinSilver nitrate

Detection of BloodKastle-Meyer Color TestLuminolFluoresceinTeichmann Test

Drug IdentificationColor TestMicrocrystalline TestThin Layer ChromatographyGas Chromatography/Mass Spectrometry Detection of FingerprintsCatching KillersFingerprint Key TermsPorous surfaces able to absorb fluidsEx. Paper, cardboard, and raw woodNonporous surfaces will not absorb fluidsEx. Plastic, glass, metal, and ceramicLatent prints are prints that are invisible to the naked eyeUltraviolet light (UV) is the invisible energy at the violet end of the color spectrum that causes substances to emit visible light, commonly called FluorescenceSuperglue FumingCyanoacrylate fumingFirst used in 1978 in Japan

Porous surfacesAppears yellow-brownIodineFuming

Methyl cyanoacrylate

NinhydrinPoruous surfacesAppears purplePorous surfacesAppears red-brownSilver Nitrate

Detection of BloodDetection of Blood Key TermsHemoglobin is a protein-based part of the red blood cells that transfer oxygen throughout the bodyPresumptive Test first type of testing but does not positively identify the substance but it does narrow down the possibilitiesConfirmatory Test last type of testing, it can positively confirm the identity of a substanceKastle-Meyer Color TestLuminolDiscovered in 1928 by German Chemist H.O AlbrechtAppears bluish-greenish lightPhenolphthalein and hydrogen peroxide are usedA false positive can occur

Phenolphthalein

Hydrogen Peroxide

FluoresceinTeichmann TestCrystals are formedLook at sample under a microscope

Alcohol basedWater basedUV light is used

Drug IdentificationDrug Identification Key TermsToxicology the examination of body fluids and organs for drugs and poisonsChromatography is the process of separating compounds and ions by the use of a variety of supporting materialMass Spectrum is an intensity vs. m/z (mass to change ratio) plot representing a chemical analysisColor TestsMarquisScott TestDillie KoppanyiVanUrkDuquenois-LevineA chemical reaction occurs producing a crystalline precipitateEach drug has its own crystalline structureMicrocrystalline TestThin-layer Chromatography/ Gas Chromatography/ Mass Spectrometryhttp://amandahone.edu.glogster.com/forensic-science/

Work Cited"Deleting Our Carbon Footprints with UV Light! | Here Comes the Science Bit." Here Comes the Science Bit. N.p., n.d. Web. 07 May 2013. . Dollak, Amanda R. "Four Field Tests Used to Detect Blood at a Crime Scene." Yahoo! Contributor Network. N.p., 2008. Web. 06 May 2013. . "Enhancing Fingerprints With Ninydrin." Forensics4fiction. N.p., 13 June 2011. Web. 19 Apr. 2013. . "FingerprintScience - Superglue Fuming & Ninhydrin Developer." FingerprintScience - Superglue Fuming & Ninhydrin Developer. N.p., n.d. Web. 07 May 2013. . Gale. "Chromatography." World of Biology. Science In Context, 2006. Web. 6 May 2013. . Gale. "Gas Chromatograph-mass Spectrometer." World of Forensic Science. Science In Context, 2006. Web. 6 May 2013. . Gale. "Luminol." Chemical Compounds. Science In Context, 2006. Web. 6 May 2013. . Gale. "Luminol." World of Forensic Science. Science In Context, 2006. Web. 6 May 2013. . Gale. "Mass Spectrometry." World of Chemistry. Science In Context, 2006. Web. 6 May 2013. . Work Cited ContinuedGale. "Superglue Fuming." World of Forensic Science. Science In Context, 2006. Web. 6 May 2013. . Gale. "Thin Layer Chromatography." World of Forensic Science. Science In Context, 2006. Web. 6 May 2013. . "How Forensic Lab Techniques Work." HowStuffWorks. N.p., n.d. Web. 29 Apr. 2013. . "Left of Bang." Left of Bang. N.p., n.d. Web. 07 May 2013. . "Methyl Cyanoacrylate." Wikipedia. Wikimedia Foundation, 04 June 2013. Web. 19 Apr. 2013. . "A New Way to Detect Hidden graves." Sinelight Io. N.p., n.d. Web. 07 May 2013. . N.p.: n.p., n.d. Double-Replacement Reactions and Fingerprints. Web. 22 Apr. 2013. . "OChemOnline." OChemOnline. N.p., n.d. Web. 07 May 2013. . Orthmann, Christine H., and Karen M. Hess. Criminal Investigation. 9th ed. New York City: Cengage Learning, 2010. Print. Thibodeaux, Wanda. "Chemicals Used in Forensic Science." EHow. Demand Media, 14 Aug. 2010. Web. 06 May 2013. .

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